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Windows Defender Anti-virus Bypassed Using Direct Syscalls & XOR Encryption (cybersecuritynews.com)

submitted 2 months ago* (last edited 2 months ago) by [email protected] to c/[email protected]

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"According to the research published by Hackmosphere, the technique works by avoiding the conventional execution path where applications call Windows API functions through libraries like kernel32.dll, which then forwards requests to ntdll.dll before making the actual system call to the kernel."

Additional Information:

https://www.hackmosphere.fr/bypass-windows-defender-antivirus-2025-part-1/

https://www.hackmosphere.fr/bypass-windows-defender-antivirus-2025-part-2/

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[-] [email protected] 3 points 2 months ago

Saw this attack in the wild this week. Huntress MDR detected and shut it down.

this post was submitted on 12 Apr 2025

101 points (95.5% liked)

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