Jonhnathan
4233fef238
* win folder * Other folders * Update test_all_rules.py * . * updated missing elastic defend tags --------- Co-authored-by: terrancedejesus <terrance.dejesus@elastic.co>
67 lines
2.6 KiB
TOML
67 lines
2.6 KiB
TOML
[metadata]
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creation_date = "2023/06/14"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "The single field New Term rule type used in this rule was added in Elastic 8.4"
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min_stack_version = "8.4.0"
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updated_date = "2023/08/24"
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[rule]
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author = ["Elastic"]
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description = """
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This rule monitors for the execution of several commonly used system commands executed by a previously unknown
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executable located in commonly abused directories. An alert from this rule can indicate the presence of potentially
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malicious activity, such as the execution of unauthorized or suspicious processes attempting to run malicious code.
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Detecting and investigating such behavior can help identify and mitigate potential security threats, protecting the
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system and its data from potential compromise.
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"""
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from = "now-9m"
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index = ["logs-endpoint.events.*", "endgame-*"]
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language = "kuery"
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license = "Elastic License v2"
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name = "Suspicious System Commands Executed by Previously Unknown Executable"
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risk_score = 21
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rule_id = "e9001ee6-2d00-4d2f-849e-b8b1fb05234c"
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severity = "low"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Execution", "Data Source: Elastic Endgame", "Data Source: Elastic Defend"]
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timestamp_override = "event.ingested"
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type = "new_terms"
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query = '''
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host.os.type:linux and event.category:process and event.action:(exec or exec_event or fork or fork_event) and
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process.executable:(
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/bin/* or /usr/bin/* or /usr/share/* or /tmp/* or /var/tmp/* or /dev/shm/* or
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/etc/init.d/* or /etc/rc*.d/* or /etc/crontab or /etc/cron.*/* or /etc/update-motd.d/* or
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/usr/lib/update-notifier/* or /home/*/.* or /boot/* or /srv/* or /run/*)
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and process.args:(whoami or id or hostname or uptime or top or ifconfig or netstat or route or ps or pwd or ls) and
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not process.name:(sudo or which or whoami or id or hostname or uptime or top or netstat or ps or pwd or ls or apt or
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dpkg or yum or rpm or dnf or dockerd or docker or snapd or snap) and
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not process.parent.executable:(/bin/* or /usr/bin/* or /run/k3s/* or /etc/network/* or /opt/Elastic/*)
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'''
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[[rule.threat]]
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framework = "MITRE ATT&CK"
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[rule.threat.tactic]
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name = "Execution"
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id = "TA0002"
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reference = "https://attack.mitre.org/tactics/TA0002/"
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[[rule.threat.technique]]
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name = "Command and Scripting Interpreter"
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id = "T1059"
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reference = "https://attack.mitre.org/techniques/T1059/"
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[[rule.threat.technique.subtechnique]]
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name = "Unix Shell"
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id = "T1059.004"
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reference = "https://attack.mitre.org/techniques/T1059/004/"
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[rule.new_terms]
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field = "new_terms_fields"
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value = ["process.executable"]
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[[rule.new_terms.history_window_start]]
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field = "history_window_start"
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value = "now-14d"
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