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atrielienz@lemmy.world to Technology@lemmy.worldEnglish ·
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25 days ago

Windows Defender Anti-virus Bypassed Using Direct Syscalls & XOR Encryption

cybersecuritynews.com

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Windows Defender Anti-virus Bypassed Using Direct Syscalls & XOR Encryption

cybersecuritynews.com

atrielienz@lemmy.world to Technology@lemmy.worldEnglish ·
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25 days ago
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Windows Defender Antivirus Bypassed Using Direct Syscalls & XOR Encryption
cybersecuritynews.com
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A new sophisticated method to bypass Microsoft's Windows Defender antivirus protection by combining direct syscalls with XOR encryption techniques.

“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/

  • atrielienz@lemmy.worldOP
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    26 days ago

    It technically counts. It’s a cipher that uses the same key for encryption and decryption.

    • Quazatron@lemmy.world
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      26 days ago

      A one time pad, I think it called.

      • ignirtoq@fedia.io
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        26 days ago

        deleted by creator

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