Github SSH Certificate Configuration Changed

Title: Github SSH Certificate Configuration Changed
Status: test
Description:Detects when changes are made to the SSH certificate configuration of the organization.
References:
  -https://docs.github.com/en/enterprise-cloud@latest/organizations/managing-git-access-to-your-organizations-repositories/about-ssh-certificate-authorities
  -https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/audit-log-events-for-your-enterprise#ssh_certificate_authority
Author: Romain Gaillard (@romain-gaillard)
Date: 2024-07-29
modified:None
Tags:

• -'attack.initial-access'
• -'attack.persistence'
• -'attack.privilege-escalation'
• -'attack.stealth'
• -'attack.t1078.004'

Logsource:

• product: github
• service: audit
• definition: Requirements: The audit log streaming feature must be enabled to be able to receive such logs. You can enable following the documentation here: https://docs.github.com/en/enterprise-cloud@latest/admin/monitoring-activity-in-your-enterprise/reviewing-audit-logs-for-your-enterprise/streaming-the-audit-log-for-your-enterprise#setting-up-audit-log-streaming

Detection:
  selection:
    action:
      -'ssh_certificate_authority.create'
      -'ssh_certificate_requirement.disable'

  condition:selection
Falsepositives:
  -Allowed administrative activities.
Level: medium