System Shells via Servicesedit

Windows services typically run as SYSTEM and can be used as a privilege escalation opportunity. Malware or penetration testers may run a shell as a service to gain SYSTEM permissions.

Rule type: query

Rule indices:

  • winlogbeat-*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum signals per execution: 100

Tags:

  • Elastic
  • Windows

Version: 2 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.7.0

Rule queryedit

event.action:"Process Create (rule: ProcessCreate)" and
process.parent.name:services.exe and process.name:(cmd.exe or
powershell.exe)

Threat mappingedit

Framework: MITRE ATT&CKTM

Rule version historyedit

Version 2 (7.7.0 release)

Updated query, changed from:

event.action:"Process Create (rule: ProcessCreate)" and
process.parent.name:"services.exe" and process.name:("cmd.exe" or
"powershell.exe")