Ruben Groenewoud
61 lines
1.8 KiB
TOML
61 lines
1.8 KiB
TOML
[metadata]
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creation_date = "2025/01/07"
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integration = ["endpoint", "auditd_manager", "crowdstrike"]
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maturity = "production"
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updated_date = "2025/10/17"
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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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This rule identifies Linux system information discovery via the `getconf` command. The `getconf` command is used to query system configuration
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variables and system limits. Adversaries may use this command to gather information about the system, such as the page size, maximum number
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of open files, and other system limits, to aid in further exploration and exploitation of the system.
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"""
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from = "now-119m"
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index = [
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"logs-endpoint.events.process*",
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"endgame-*",
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"auditbeat-*",
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"logs-auditd_manager.auditd-*",
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"logs-crowdstrike.fdr*",
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]
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interval = "60m"
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language = "eql"
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license = "Elastic License v2"
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name = "Linux System Information Discovery via Getconf"
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references = ["https://blog.exatrack.com/Perfctl-using-portainer-and-new-persistences/"]
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risk_score = 21
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rule_id = "90e5976d-ed8c-489a-a293-bfc57ff8ba89"
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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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"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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"Data Source: Auditd Manager",
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"Data Source: Crowdstrike",
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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 == "linux" and event.type == "start" and event.action in ("exec", "exec_event", "executed", "process_started", "ProcessRollup2") and
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process.name == "getconf"
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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 = "T1082"
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name = "System Information Discovery"
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reference = "https://attack.mitre.org/techniques/T1082/"
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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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