Detection rules › Sigma

Service DACL Abuse To Hide Services Via Sc.EXE

Severity
high
Author
Andreas Hunkeler (@Karneades)
Source
upstream

Detects usage of the "sc.exe" utility adding a new service with special permission seen used by threat actors which makes the service hidden and unremovable.

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1574.011 Hijack Execution Flow: Services Registry Permissions Weakness
Privilege EscalationT1574.011 Hijack Execution Flow: Services Registry Permissions Weakness
Defense EvasionT1574.011 Hijack Execution Flow: Services Registry Permissions Weakness

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: all of selection_img

or:
Image|endswith: '\sc.exe'
OriginalFileName: sc.exe

Stage 2: all of selection_cli

CommandLine|contains: DCLCWPDTSD
CommandLine|contains: sdset

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
CommandLinematch
  • DCLCWPDTSD corpus 2 (sigma 2)
  • sdset corpus 4 (sigma 4)
Imageends_with
  • \sc.exe corpus 17 (sigma 17)
OriginalFileNameeq
  • sc.exe corpus 10 (sigma 10)