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Detection rules › Sigma

Service Installed By Unusual Client - System

Severity
high
Author
Tim Rauch (Nextron Systems), Elastic (idea)
Source
upstream

Detects a service installed by a client which has PID 0 or whose parent has PID 0

MITRE ATT&CK coverage

TacticTechniques
PersistenceT1543 Create or Modify System Process
Privilege EscalationT1543 Create or Modify System Process

Event coverage

ProviderEvent IDTitle
Service-Control-Manager7045

Stages and Predicates

Stage 1: selection

ProcessId: 0
Provider_Name: 'Service Control Manager'

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
ProcessIdeq
  • 0 corpus 2 (sigma 1, elastic 1)
Provider_Nameeq
  • Service Control Manager corpus 43 (sigma 43)

Neighbors

Broader alternatives (more inclusive than this rule)

These rules match a superset of what this rule catches. They cover the same events plus more. Use them if you want wider coverage and can absorb more false positives.