Windows MSIX Package Support Framework AI_STUBS Execution (af5732ed-764e-489d-826d-0447c8b36242)

Detects execution of Advanced Installer MSIX Package Support Framework (PSF) components, specifically AI_STUBS executables with original filename 'popupwrapper.exe'. This activity may indicate malicious MSIX packages build with Advanced Installer leveraging the Package Support Framework to bypass application control restrictions.

Cluster A	Galaxy A	Cluster B	Galaxy B	Level
Windows MSIX Package Support Framework AI_STUBS Execution (af5732ed-764e-489d-826d-0447c8b36242)	Sigma-Rules	Mark-of-the-Web Bypass - T1553.005 (7e7c2fba-7cca-486c-9582-4c1bb2851961)	Attack Pattern	1
Windows MSIX Package Support Framework AI_STUBS Execution (af5732ed-764e-489d-826d-0447c8b36242)	Sigma-Rules	System Binary Proxy Execution - T1218 (457c7820-d331-465a-915e-42f85500ccc4)	Attack Pattern	1
Windows MSIX Package Support Framework AI_STUBS Execution (af5732ed-764e-489d-826d-0447c8b36242)	Sigma-Rules	Malicious File - T1204.002 (232b7f21-adf9-4b42-b936-b9d6f7df856e)	Attack Pattern	1
Mark-of-the-Web Bypass - T1553.005 (7e7c2fba-7cca-486c-9582-4c1bb2851961)	Attack Pattern	Subvert Trust Controls - T1553 (b83e166d-13d7-4b52-8677-dff90c548fd7)	Attack Pattern	2
Malicious File - T1204.002 (232b7f21-adf9-4b42-b936-b9d6f7df856e)	Attack Pattern	User Execution - T1204 (8c32eb4d-805f-4fc5-bf60-c4d476c131b5)	Attack Pattern	2