Search Evasion Techniques
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Evasion using direct Syscalls Antivirus/EDR Evasion
In the Windows operating system, conventional malware frequently utilizes strategies involving the invocation of specific functions from the kernel32.dll library, such as VirtualAlloc, VirtualProtect, and CreateThread. A closer inspection of the call stack reveals that the functions employed from kernel32.dll eventually trigger corresponding functions within the ntdll.dll library. This is facilitated by the ntdll.dll library, which serves …
FuncIn Antivirus/EDR Evasion Anti-Debugging Anti-Disassembly Anti-Forensic
FuncIn involves a payload staging strategy wherein the entire set of malicious functionalities is not contained within the malware file itself or any third-party file/network location (e.g., a web server). Instead, these functionalities are transmitted over the network by the Command and Control (C2) server when required.
This approach addresses three primary issues in malware development. Firstly, it mitigates …