Account or Group Discovery via Built-In Tools

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Adversaries may use built-in applications to get a listing of local system or domain accounts and groups.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*
  • endgame-*
  • auditbeat-*
  • logs-auditd_manager.auditd-*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Domain: Endpoint
  • OS: Linux
  • OS: macOS
  • Use Case: Threat Detection
  • Tactic: Discovery
  • Rule Type: BBR
  • Data Source: Elastic Defend
  • Data Source: Elastic Endgame
  • Data Source: Auditd Manager

Version: 3

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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process where event.type == "start" and event.action in ("exec", "exec_event", "executed", "process_started") and (
  (process.name in ("groups", "id")) or
  (process.name == "dscl" and process.args : ("/Active Directory/*", "/Users*", "/Groups*")) or
  (process.name == "dscacheutil" and process.args in ("user", "group")) or
  (process.args in ("/etc/passwd", "/etc/master.passwd", "/etc/sudoers")) or
  (process.name == "getent" and process.args in ("passwd", "group"))
)

Framework: MITRE ATT&CKTM