Jonhnathan
9bbe26fec0
* Initial Review of Sysmon Registry Rules * Update defense_evasion_sip_provider_mod.toml
61 lines
2.2 KiB
TOML
61 lines
2.2 KiB
TOML
[metadata]
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creation_date = "2020/11/18"
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maturity = "production"
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updated_date = "2022/02/14"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies processes modifying the services registry key directly, instead of through the expected Windows APIs. This
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could be an indication of an adversary attempting to stealthily persist through abnormal service creation or
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modification of an existing service.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*"]
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language = "eql"
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license = "Elastic License v2"
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name = "Unusual Persistence via Services Registry"
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risk_score = 21
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rule_id = "403ef0d3-8259-40c9-a5b6-d48354712e49"
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severity = "low"
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tags = ["Elastic", "Host", "Windows", "Threat Detection", "Persistence"]
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timestamp_override = "event.ingested"
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type = "eql"
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query = '''
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registry where registry.path : ("HKLM\\SYSTEM\\ControlSet*\\Services\\*\\ServiceDLL", "HKLM\\SYSTEM\\ControlSet*\\Services\\*\\ImagePath") and
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not registry.data.strings : ("?:\\windows\\system32\\Drivers\\*.sys",
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"\\SystemRoot\\System32\\drivers\\*.sys",
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"\\??\\?:\\Windows\\system32\\Drivers\\*.SYS",
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"system32\\DRIVERS\\USBSTOR") and
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not (process.name : "procexp??.exe" and registry.data.strings : "?:\\*\\procexp*.sys") and
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not process.executable : ("?:\\Program Files\\*.exe",
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"?:\\Program Files (x86)\\*.exe",
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"?:\\Windows\\System32\\svchost.exe",
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"?:\\Windows\\winsxs\\*\\TiWorker.exe",
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"?:\\Windows\\System32\\drvinst.exe",
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"?:\\Windows\\System32\\services.exe",
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"?:\\Windows\\System32\\msiexec.exe",
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"?:\\Windows\\System32\\regsvr32.exe")
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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 = "T1543"
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name = "Create or Modify System Process"
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reference = "https://attack.mitre.org/techniques/T1543/"
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[[rule.threat.technique.subtechnique]]
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id = "T1543.003"
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name = "Windows Service"
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reference = "https://attack.mitre.org/techniques/T1543/003/"
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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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