Creation of Kernel Module

Identifies activity related to loading kernel modules on Linux via creation of new ko files in the LKM directory.

Rule type: eql
Rule indices:

• logs-endpoint.events.*
• endgame-*

Rule Severity: low
Risk Score: 21
Runs every: 60m
Searches indices from: now-119m
Maximum alerts per execution: ?
References:

Tags:

• Domain: Endpoint
• OS: Linux
• Use Case: Threat Detection
• Tactic: Persistence
• Rule Type: BBR
• Data Source: Elastic Defend
• Data Source: Elastic Endgame

Version: ?
Rule authors:

• Elastic

Rule license: Elastic License v2

file where host.os.type == "linux" and event.type in ("change", "creation") and file.path : "/lib/modules/*" and
file.extension == "ko" and not process.name : (
  "dpkg", "systemd", "falcon-sensor*", "dnf", "yum", "rpm", "cp"
)

Framework: MITRE ATT&CK

• Tactic:

  • Name: Persistence
  • Id: TA0003
  • Reference URL: https://attack.mitre.org/tactics/TA0003/

• Technique:

  • Name: Boot or Logon Autostart Execution
  • Id: T1547
  • Reference URL: https://attack.mitre.org/techniques/T1547/

• Sub Technique:

  • Name: Kernel Modules and Extensions
  • Id: T1547.006
  • Reference URL: https://attack.mitre.org/techniques/T1547/006/