Ruben Groenewoud
ed2daecb25
* [Rule Tuning] Several rule tunings
* Added 1 more
* optimized ransomware encryption rules
* Update rules/linux/impact_potential_linux_ransomware_file_encryption.toml
* Update rules/linux/impact_potential_linux_ransomware_note_detected.toml
* Added 2 more tunings based on todays telemetry
* Some tunings
* Tuning
* Tuning
* fixed user.id comparison
* Something went wrong with deprecation
* Something went wrong with deprecation
* Update rules/linux/impact_potential_linux_ransomware_file_encryption.toml
* Update rules/linux/discovery_linux_nping_activity.toml
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
* Update rules/linux/discovery_linux_hping_activity.toml
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
* Dedeprecated the rule to deprecate later
---------
Co-authored-by: Jonhnathan <26856693+w0rk3r@users.noreply.github.com>
(cherry picked from commit a1716bd673)
57 lines
1.8 KiB
TOML
57 lines
1.8 KiB
TOML
[metadata]
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creation_date = "2022/07/22"
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maturity = "production"
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min_stack_comments = "New fields added: required_fields, related_integrations, setup"
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min_stack_version = "8.3.0"
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updated_date = "2023/08/24"
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integration = ["endpoint"]
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[rule]
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author = ["Elastic"]
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description = """
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Detects the use of the chkconfig binary to manually add a service for management by chkconfig. Threat actors may utilize
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this technique to maintain persistence on a system. When a new service is added, chkconfig ensures that the service has
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either a start or a kill entry in every runlevel and when the system is rebooted the service file added will run
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providing long-term persistence.
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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 = "eql"
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license = "Elastic License v2"
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name = "Chkconfig Service Add"
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references = [
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"https://www.intezer.com/blog/research/lightning-framework-new-linux-threat/"
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]
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risk_score = 47
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rule_id = "b910f25a-2d44-47f2-a873-aabdc0d355e6"
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severity = "medium"
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tags = ["Domain: Endpoint", "OS: Linux", "Use Case: Threat Detection", "Tactic: Persistence", "Threat: Lightning Framework", "Data Source: Elastic Endgame"]
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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.action in ("exec", "exec_event") and
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(
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(process.executable : "/usr/sbin/chkconfig" and process.args : "--add") or
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(process.args : "*chkconfig" and process.args : "--add")
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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 = "T1037"
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name = "Boot or Logon Initialization Scripts"
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reference = "https://attack.mitre.org/techniques/T1037/"
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[[rule.threat.technique.subtechnique]]
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id = "T1037.004"
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name = "RC Scripts"
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reference = "https://attack.mitre.org/techniques/T1037/004/"
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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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