Detection rules › Sigma

Service Security Descriptor Tampering Via Sc.EXE

Severity
medium
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detection of sc.exe utility adding a new service with special permission which hides that service.

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: 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
  • sdset corpus 4 (sigma 4)
Imageends_with
  • \sc.exe corpus 17 (sigma 17)
OriginalFileNameeq
  • sc.exe corpus 10 (sigma 10)