Creation of Kernel Module

Elastic Stack Serverless Security

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-*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

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

Version: 3

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&CKTM

• 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/