Detection rules › Sigma

Potential COM Object Hijacking Via TreatAs Subkey - Registry

Severity
medium
Author
Kutepov Anton, oscd.community
Source
upstream

Detects COM object hijacking via TreatAs subkey

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1546.015 Event Triggered Execution: Component Object Model Hijacking
Privilege EscalationT1546.015 Event Triggered Execution: Component Object Model Hijacking

Event coverage

ProviderEvent IDTitle
Sysmon13RegistryEvent (Value Set)

Stages and Predicates

Stage 1: selection

TargetObject|contains: 'Classes\CLSID\'
TargetObject|contains: 'HKU\'
TargetObject|contains: '\TreatAs'

Stage 2: not 1 of filter_main_svchost

Image: 'C:\WINDOWS\system32\svchost.exe'

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
Imageeq
  • C:\WINDOWS\system32\svchost.exe corpus 2 (sigma 2)
TargetObjectmatch
  • Classes\CLSID\
  • HKU\
  • \TreatAs