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Amsi-Bypass

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high advisory

Suspicious Antimalware Scan Interface DLL Creation

An adversary may attempt to bypass AMSI by creating a rogue AMSI DLL in an unusual location to evade detection.

Microsoft Defender XDR +4 defense-evasion amsi-bypass dll-hijacking windows
2r 1t
high advisory

AMSI Bypass via PowerShell Reflection

Detection of AMSI (Antimalware Scan Interface) tampering via PowerShell reflection, utilizing PowerShell Script Block Logging (EventCode=4104) to identify commands manipulating `system.management.automation.amsi`, potentially leading to undetected malicious code execution and system compromise.

Splunk Enterprise +2 amsi-bypass powershell reflection defense-evasion
2r 1t