SOURGUM Actor Behaviors
This rule detects suspicious behaviors associated with the SOURGUM actor, as tracked by Microsoft. Specifically, it looks for the creation of processes with specific image paths related to 'Physmem.sys' or 'WimBootConfigurations.ini' within IME directories. Additionally, it identifies attempts to modify registry keys associated with Component Object Model (COM) objects, specifically InprocServer32 entries for CLSIDs {7c857801-7381-11cf-884d-00aa004b2e24} and {cf4cc405-e2c5-4ddd-b3ce-5e7582d8c9fa}, using the 'reg add' command.
Sigma
