Jonhnathan
deb08fd28d
* [New Rule] AD Group Modification by SYSTEM * . * Update rules/windows/persistence_group_modification_by_system.toml Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com> * Tighten up indexes * Update persistence_group_modification_by_system.toml * Apply suggestions from code review Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com> --------- Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com> Co-authored-by: Justin Ibarra <16747370+brokensound77@users.noreply.github.com>
68 lines
1.8 KiB
TOML
68 lines
1.8 KiB
TOML
[metadata]
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creation_date = "2024/06/26"
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integration = ["system", "windows"]
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maturity = "production"
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updated_date = "2024/06/26"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies a user being added to an active directory group by the SYSTEM (S-1-5-18) user. This behavior can indicate
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that the attacker has achieved SYSTEM privileges in a domain controller, which attackers can obtain by exploiting
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vulnerabilities or abusing default group privileges (e.g., Server Operators), and is attempting to pivot to a domain account.
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"""
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from = "now-9m"
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index = ["winlogbeat-*", "logs-system.security*", "logs-windows.forwarded*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Active Directory Group Modification by SYSTEM"
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risk_score = 47
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rule_id = "6f024bde-7085-489b-8250-5957efdf1caf"
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severity = "medium"
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tags = [
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"Domain: Endpoint",
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"OS: Windows",
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"Use Case: Threat Detection",
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"Tactic: Persistence",
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"Use Case: Active Directory Monitoring",
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"Data Source: Active Directory",
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]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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iam where winlog.api == "wineventlog" and event.code == "4728" and
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winlog.event_data.SubjectUserSid : "S-1-5-18" and
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/* DOMAIN_USERS and local groups */
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not group.id : "S-1-5-21-*-513"
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1098"
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name = "Account Manipulation"
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reference = "https://attack.mitre.org/techniques/T1098/"
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[rule.threat.tactic]
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id = "TA0003"
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name = "Persistence"
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reference = "https://attack.mitre.org/tactics/TA0003/"
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[[rule.threat.technique]]
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id = "T1098"
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name = "Account Manipulation"
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reference = "https://attack.mitre.org/techniques/T1098/"
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[rule.threat.tactic]
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id = "TA0004"
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name = "Privilege Escalation"
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reference = "https://attack.mitre.org/tactics/TA0004/"
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