Ruben Groenewoud
76 lines
2.1 KiB
TOML
76 lines
2.1 KiB
TOML
[metadata]
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creation_date = "2023/07/11"
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integration = ["endpoint"]
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maturity = "production"
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updated_date = "2026/03/02"
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[rule]
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author = ["Elastic"]
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building_block_type = "default"
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description = """
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Identifies the use of built-in tools attackers can use to discover running processes on an endpoint.
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"""
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from = "now-119m"
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index = ["logs-endpoint.events.*", "endgame-*"]
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interval = "60m"
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language = "kuery"
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license = "Elastic License v2"
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name = "Process Discovery via Built-In Applications"
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risk_score = 21
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rule_id = "3f4d7734-2151-4481-b394-09d7c6c91f75"
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severity = "low"
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tags = [
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"Domain: Endpoint",
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"OS: Linux",
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"OS: macOS",
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"Use Case: Threat Detection",
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"Tactic: Discovery",
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"Rule Type: BBR",
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"Data Source: Elastic Defend",
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"Data Source: Elastic Endgame",
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]
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timestamp_override = "event.ingested"
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type = "new_terms"
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query = '''
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event.category:process and host.os.type:(linux or macos) and event.type:start and event.action:(exec or exec_event) and
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process.name:("ps" or "pstree" or "htop" or "pgrep") and not (
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process.parent.name:("amazon-ssm-agent" or "snap") or
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process.parent.args:("/usr/local/ASR/Vx/bin/status" or "/usr/sbin/ksmtuned") or
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process.parent.executable:(
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"/usr/bin/check_mk_agent" or /opt/gitlab/* or "/usr/bin/pmlogctl" or "/usr/libexec/pcp/bin/pmlogger_daily" or
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"/usr/libexec/pcp/bin/pmlogger_check"
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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 = "T1057"
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name = "Process Discovery"
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reference = "https://attack.mitre.org/techniques/T1057/"
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[[rule.threat.technique]]
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id = "T1518"
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name = "Software Discovery"
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reference = "https://attack.mitre.org/techniques/T1518/"
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[[rule.threat.technique.subtechnique]]
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id = "T1518.001"
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name = "Security Software Discovery"
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reference = "https://attack.mitre.org/techniques/T1518/001/"
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[rule.threat.tactic]
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id = "TA0007"
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name = "Discovery"
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reference = "https://attack.mitre.org/tactics/TA0007/"
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[rule.new_terms]
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field = "new_terms_fields"
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value = ["process.parent.executable", "process.command_line", "host.id"]
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[[rule.new_terms.history_window_start]]
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field = "history_window_start"
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value = "now-5d"
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