Enumeration of Users or Groups via Built-in Commands
editEnumeration of Users or Groups via Built-in Commands
editIdentifies the execution of macOS built-in commands related to account or group enumeration.
Rule type: eql
Rule indices:
- auditbeat-*
- logs-endpoint.events.*
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
- macOS
- Threat Detection
- Discovery
Version: 3
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editprocess where event.type in ("start", "process_started") and
not process.parent.executable : ("/Applications/NoMAD.app/Contents/MacOS/NoMAD",
"/Applications/ZoomPresence.app/Contents/MacOS/ZoomPresence",
"/Applications/Sourcetree.app/Contents/MacOS/Sourcetree",
"/Library/Application Support/JAMF/Jamf.app/Contents/MacOS/JamfDaemon.app/Contents/MacOS/JamfDaemon",
"/Applications/Jamf Connect.app/Contents/MacOS/Jamf Connect",
"/usr/local/jamf/bin/jamf"
) and
process.name : ("ldapsearch", "dsmemberutil") or
(process.name : "dscl" and
process.args : ("read", "-read", "list", "-list", "ls", "search", "-search") and
process.args : ("/Active Directory/*", "/Users*", "/Groups*"))
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: Permission Groups Discovery
- ID: T1069
- Reference URL: https://attack.mitre.org/techniques/T1069/
-
Technique:
- Name: Account Discovery
- ID: T1087
- Reference URL: https://attack.mitre.org/techniques/T1087/