Important Detection 2026: AMSI Bypass via In-Memory Patching (T1562.001)
Detects command-line execution patterns indicative of Anti-Malware Scan Interface (AMSI) bypass attempts. The rule looks for attempts to manipulate internal .NET AmsiUtils fields, modify AmsiScanBuffer, or utilize VirtualProtect against amsi.dll memory regions, all of which are common techniques employed by malicious loaders to evade script-based detection.
Sigma
