AMSI Bypass via amsi.dll ImageLoad Followed by VirtualProtect on AmsiScanBuffer

Ibrahim Saud@tektrix

•updated Jun 28, 2026•0•0•0

Detects instances where suspicious processes load the amsi.dll module, which is a common precursor to performing in-memory patching of the AmsiScanBuffer function. This behavior is indicative of an attempt to disable Anti-Malware Scan Interface (AMSI) to evade security scanning, specifically observed in techniques like the SNOWLIGHT dropper.