AMSI AmsiScanBuffer In-Process Memory Patch via VirtualProtect or Script Reflection
Detects attempts to bypass the Anti-Malware Scan Interface (AMSI) by identifying malicious memory modifications or reflective script patterns commonly used to patch AMSI in memory. This rule correlates process-level memory events (VirtualProtect) with PowerShell ScriptBlock logging (Event ID 4104) to identify tampering with amsi.dll or AmsiScanBuffer.
Microsoft Sentinel (KQL)
