Net command via SYSTEM account

Identifies the SYSTEM account using an account discovery utility. This could be a sign of discovery activity after an adversary has achieved privilege escalation.

Rule type: eql

Rule indices:

winlogbeat-*
logs-endpoint.events.*
logs-windows.*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

Elastic
Host
Windows
Threat Detection
Discovery

Version: 8

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

process where event.type in ("start", "process_started") and
  user.id in ("S-1-5-18", "S-1-5-19", "S-1-5-20") and
  process.name : "whoami.exe" or
  (process.name : "net1.exe" and not process.parent.name : "net.exe")

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
Technique:
- Name: System Owner/User Discovery
- ID: T1033
- Reference URL: https://attack.mitre.org/techniques/T1033/

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