Jonhnathan
7b655759ab
* [Rule Tuning] 3rd Party EDR Compatibility - 10 * min_stack for merge, bump updated_date
81 lines
2.2 KiB
TOML
81 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2023/08/23"
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integration = ["endpoint", "m365_defender", "system"]
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maturity = "production"
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updated_date = "2024/10/10"
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[rule]
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author = ["Elastic"]
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description = """
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Managed Object Format (MOF) files can be compiled locally or remotely through mofcomp.exe. Attackers may leverage MOF
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files to build their own namespaces and classes into the Windows Management Instrumentation (WMI) repository, or
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establish persistence using WMI Event Subscription.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.process-*", "logs-m365_defender.event-*", "endgame-*", "logs-system.security-*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Mofcomp Activity"
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risk_score = 21
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rule_id = "210d4430-b371-470e-b879-80b7182aa75e"
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severity = "low"
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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: Execution",
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"Data Source: Elastic Defend",
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"Data Source: Microsoft Defender for Endpoint",
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"Data Source: Elastic Endgame",
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"Data Source: System",
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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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process where host.os.type == "windows" and event.type == "start" and
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process.name : "mofcomp.exe" and process.args : "*.mof" and
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not user.id : "S-1-5-18" and
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not
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(
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process.parent.name : "ScenarioEngine.exe" and
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process.args : (
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"*\\MSSQL\\Binn\\*.mof",
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"*\\Microsoft SQL Server\\???\\Shared\\*.mof",
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"*\\OLAP\\bin\\*.mof"
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)
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)
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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 = "T1047"
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name = "Windows Management Instrumentation"
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reference = "https://attack.mitre.org/techniques/T1047/"
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[rule.threat.tactic]
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id = "TA0002"
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name = "Execution"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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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 = "T1546"
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name = "Event Triggered Execution"
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reference = "https://attack.mitre.org/techniques/T1546/"
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[[rule.threat.technique.subtechnique]]
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id = "T1546.003"
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name = "Windows Management Instrumentation Event Subscription"
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reference = "https://attack.mitre.org/techniques/T1546/003/"
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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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