User Account Creation

Elastic Stack Serverless Security

Identifies attempts to create new local users. This is sometimes done by attackers to increase access to a system or domain.

Rule type: eql

Rule indices:

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

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

• Elastic
• Host
• Windows
• Threat Detection
• Persistence

Version: 9

Rule authors:

• Elastic

Rule license: Elastic License v2

process where event.type in ("start", "process_started") and
  process.name : ("net.exe", "net1.exe") and
  not process.parent.name : "net.exe" and
  (process.args : "user" and process.args : ("/ad", "/add"))

Framework: MITRE ATT&CKTM

• Tactic:

  • Name: Persistence
  • ID: TA0003
  • Reference URL: https://attack.mitre.org/tactics/TA0003/

• Technique:

  • Name: Create Account
  • ID: T1136
  • Reference URL: https://attack.mitre.org/techniques/T1136/

• Sub-technique:

  • Name: Local Account
  • ID: T1136.001
  • Reference URL: https://attack.mitre.org/techniques/T1136/001/