Chkconfig Service Add

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-endpoint.events.*

Severity: medium

Risk score: 47

Runs every: 5m

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: 101

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

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

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/
Sub-technique:
- Name: RC Scripts
- ID: T1037.004
- Reference URL: https://attack.mitre.org/techniques/T1037/004/

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