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Potential Admin Group Account Addition

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Potential Admin Group Account Addition

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Identifies attempts to add an account to the admin group via the command line. This could be an indication of privilege escalation activity.

Rule type: query

Rule indices:

auditbeat-*
logs-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5 minutes

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

Maximum alerts per execution: 100

References:

https://managingosx.wordpress.com/2010/01/14/add-a-user-to-the-admin-group-via-command-line-3-0/

Tags:

Elastic
Host
macOS
Threat Detection
Privilege Escalation

Version: 1

Added (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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event.category:process and event.type:(start or process_started) and
process.name:(dscl or dseditgroup) and process.args:(("/Groups/admin"
or admin) and ("-a" or "-append"))

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
Technique:
- Name: Valid Accounts
- ID: T1078
- Reference URL: https://attack.mitre.org/techniques/T1078/

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