IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Chkconfig Service Add

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Chkconfig Service Add

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Detects the use of the chkconfig binary to manually add a service for management by chkconfig. Threat actors may utilize this technique to maintain persistence on a system. When a new service is added, chkconfig ensures that the service has either a start or a kill entry in every runlevel and when the system is rebooted the service file added will run providing long-term persistence.

Rule type: eql

Rule indices:

logs-*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://www.intezer.com/blog/research/lightning-framework-new-linux-threat/

Tags:

Elastic
Host
Linux
Threat Detection
Persistence
Lightning Framework

Version: 100 (version history)

Added (Elastic Stack release): 8.4.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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process where event.type == "start" and (process.executable :
"/usr/sbin/chkconfig" and process.args : "--add") or (process.args
: "*chkconfig" and process.args : "--add")

Threat mapping

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Framework: MITRE ATT&CK^TM

Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
Technique:
- Name: Boot or Logon Initialization Scripts
- ID: T1037
- Reference URL: https://attack.mitre.org/techniques/T1037/

Rule version history

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Version 100 (8.5.0 release)

Updated query, changed from:

process where event.type == "start" and (process.executable :
"/usr/sbin/chkconfig" and process.args : "--add") or (process.args
: "*chkconfig" and process.args : "--add")

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