Justin Ibarra
73 lines
1.6 KiB
TOML
73 lines
1.6 KiB
TOML
[metadata]
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creation_date = "2021/01/11"
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maturity = "production"
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updated_date = "2021/03/08"
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[rule]
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author = ["Elastic"]
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description = """
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Identifies the execution of a suspicious child process of the Event Monitor Daemon (emond). Adversaries may abuse this
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service by writing a rule to execute commands when a defined event occurs, such as system start up or user
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authentication.
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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 = "Suspicious Emond Child Process"
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references = ["https://www.xorrior.com/emond-persistence/"]
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risk_score = 47
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rule_id = "3e3d15c6-1509-479a-b125-21718372157e"
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severity = "medium"
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tags = ["Elastic", "Host", "macOS", "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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process where event.type in ("start", "process_started") and
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process.parent.name : "emond" and
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process.name : (
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"bash",
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"dash",
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"sh",
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"tcsh",
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"csh",
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"zsh",
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"ksh",
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"fish",
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"Python",
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"python*",
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"perl*",
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"php*",
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"osascript",
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"pwsh",
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"curl",
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"wget",
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"cp",
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"mv",
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"touch",
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"echo",
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"base64",
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"launchctl")
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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 = "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 = "T1546.014"
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name = "Emond"
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reference = "https://attack.mitre.org/techniques/T1546/014/"
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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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