Ruben Groenewoud
4f9f28c370
* [New Rules] Cron Job/Systemd Service Creation * Added execution to tags * Added additional EndGame Support * Update rules/linux/persistence_cron_job_creation.toml Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com> * Update rules/linux/persistence_systemd_service_creation.toml Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com> --------- Co-authored-by: eric-forte-elastic <119343520+eric-forte-elastic@users.noreply.github.com>
82 lines
2.7 KiB
TOML
82 lines
2.7 KiB
TOML
[metadata]
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creation_date = "2023/06/09"
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integration = ["endpoint"]
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup, New Term"
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min_stack_version = "8.6.0"
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updated_date = "2023/06/09"
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[rule]
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author = ["Elastic"]
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description = """
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Systemd service files are configuration files in Linux systems used to define and manage system services. Malicious
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actors can leverage systemd service files to achieve persistence by creating or modifying service files to execute
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malicious commands or payloads during system startup. This allows them to maintain unauthorized access, execute
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additional malicious activities, or evade detection.
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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 = "New Systemd Service Created by Previously Unknown Process"
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references = [
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"https://opensource.com/article/20/7/systemd-timers",
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"https://pberba.github.io/security/2022/01/30/linux-threat-hunting-for-persistence-systemd-timers-cron/"
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]
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risk_score = 47
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rule_id = "17b0a495-4d9f-414c-8ad0-92f018b8e001"
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severity = "medium"
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tags = ["Elastic", "Host", "Linux", "Threat Detection", "Persistence", "Privilege Escalation", "Elastic Endgame"]
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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.action : ("creation" or "file_create_event") and
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file.path : (/etc/systemd/system/* or /usr/local/lib/systemd/system/* or /lib/systemd/system/* or
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/usr/lib/systemd/system/* or /home/*/.config/systemd/user/*) and not
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(process.name : ("dpkg" or "dockerd" or "rpm" or "snapd") or file.extension : "swp")
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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 = "T1543.002"
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name = "Systemd Service"
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reference = "https://attack.mitre.org/techniques/T1543/002/"
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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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[[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 = "T1543.002"
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name = "Systemd Service"
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reference = "https://attack.mitre.org/techniques/T1543/002/"
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[rule.threat.tactic]
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id = "TA0004"
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name = "Privilege Escalation"
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reference = "https://attack.mitre.org/tactics/TA0004/"
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[rule.new_terms]
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field = "new_terms_fields"
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value = ["file.path", "process.name"]
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[[rule.new_terms.history_window_start]]
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field = "history_window_start"
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value = "now-7d"
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