Samirbous
b15f0de9a4
* [Rules Tuning] 7 diverse Windows rules Excluding FP patterns while avoiding breaking compat with winlogbeat and 4688 events lack of codesign metadata. * Update initial_access_suspicious_ms_exchange_process.toml * Update privilege_escalation_persistence_phantom_dll.toml * Update execution_psexec_lateral_movement_command.toml * Update persistence_remote_password_reset.toml * Update non-ecs-schema.json * Update persistence_remote_password_reset.toml * Update non-ecs-schema.json * Update discovery_privileged_localgroup_membership.toml
62 lines
2.1 KiB
TOML
62 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2021/10/18"
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maturity = "production"
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updated_date = "2022/08/02"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies an attempt to reset a potentially privileged account password remotely. Adversaries may manipulate account
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passwords to maintain access or evade password duration policies and preserve compromised credentials.
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"""
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false_positives = ["Legitimate remote account administration."]
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from = "now-9m"
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index = ["winlogbeat-*", "logs-system.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Account Password Reset Remotely"
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references = [
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"https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4724",
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"https://stealthbits.com/blog/manipulating-user-passwords-with-mimikatz/",
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"https://github.com/sbousseaden/EVTX-ATTACK-SAMPLES/blob/master/Credential%20Access/remote_pwd_reset_rpc_mimikatz_postzerologon_target_DC.evtx",
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]
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risk_score = 47
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rule_id = "2820c9c2-bcd7-4d6e-9eba-faf3891ba450"
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severity = "medium"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence"]
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type = "eql"
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query = '''
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sequence by host.id with maxspan=5m
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[authentication where event.action == "logged-in" and
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/* event 4624 need to be logged */
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winlog.logon.type : "Network" and event.outcome == "success" and source.ip != null and
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source.ip != "127.0.0.1" and source.ip != "::1"] by winlog.event_data.TargetLogonId
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/* event 4724 need to be logged */
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[iam where event.action == "reset-password" and
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(
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/*
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This rule is very noisy if not scoped to privileged accounts, duplicate the
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rule and add your own naming convention and accounts of interest here.
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*/
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winlog.event_data.TargetUserName: ("*Admin*", "*super*", "*SVC*", "*DC0*", "*service*", "*DMZ*", "*ADM*") or
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winlog.event_data.TargetSid : "S-1-5-21-*-500"
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)
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] by winlog.event_data.SubjectLogonId
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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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reference = "https://attack.mitre.org/techniques/T1098/"
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name = "Account Manipulation"
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[rule.threat.tactic]
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id = "TA0003"
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reference = "https://attack.mitre.org/tactics/TA0003/"
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name = "Persistence"
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