discovery_users_domain_built_in_commands.toml

[metadata]
creation_date = "2021/01/12"
integration = ["endpoint"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2023/02/22"

[rule]
author = ["Elastic"]
description = """
Identifies the execution of macOS built-in commands related to account or group enumeration. Adversaries may use account
and group information to orient themselves before deciding how to act.
"""
from = "now-9m"
index = ["auditbeat-*", "logs-endpoint.events.*"]
language = "eql"
license = "Elastic License v2"
name = "Enumeration of Users or Groups via Built-in Commands"
note = """## Setup

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.
"""
risk_score = 21
rule_id = "6e9b351e-a531-4bdc-b73e-7034d6eed7ff"
severity = "low"
tags = ["Elastic", "Host", "macOS", "Threat Detection", "Discovery"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
process where host.os.type == "macos" and event.type in ("start", "process_started") 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*"))
	) 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",
     "/Library/Application Support/AirWatch/hubd",
     "/opt/jc/bin/jumpcloud-agent",
     "/Applications/ESET Endpoint Antivirus.app/Contents/MacOS/esets_daemon",
     "/Applications/ESET Endpoint Security.app/Contents/MacOS/esets_daemon",
     "/Library/PrivilegedHelperTools/com.fortinet.forticlient.uninstall_helper"
    )
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1069"
name = "Permission Groups Discovery"
reference = "https://attack.mitre.org/techniques/T1069/"
[[rule.threat.technique.subtechnique]]
id = "T1069.001"
name = "Local Groups"
reference = "https://attack.mitre.org/techniques/T1069/001/"

[[rule.threat.technique]]
id = "T1087"
name = "Account Discovery"
reference = "https://attack.mitre.org/techniques/T1087/"
[[rule.threat.technique.subtechnique]]
id = "T1087.001"
name = "Local Account"
reference = "https://attack.mitre.org/techniques/T1087/001/"

[rule.threat.tactic]
id = "TA0007"
name = "Discovery"
reference = "https://attack.mitre.org/tactics/TA0007/"