{"id":"2f575940-d85e-4ddc-af13-17dad6f1a0ef","title":"Github SSH Certificate Configuration Changed","description":"Detects when changes are made to the SSH certificate configuration of the organization.","author":"Romain Gaillard (@romain-gaillard)","status":"test","level":"medium","date":"2024-07-29","modified":"","tags":["attack.initial-access","attack.persistence","attack.privilege-escalation","attack.stealth","attack.t1078.004"],"technique_ids":["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"},"falsepositives":["Allowed administrative activities."],"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"],"source_path":"rules/application/github/audit/github_ssh_certificate_config_changed.yml","source_sha256":"c8ea19dadac9b76c779c81f137216095dbc8223996454619c6b64dd6765686b3","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/application/github/audit/github_ssh_certificate_config_changed.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Github SSH Certificate Configuration Changed\nid: 2f575940-d85e-4ddc-af13-17dad6f1a0ef\nstatus: test\ndescription: Detects when changes are made to the SSH certificate configuration of the organization.\nreferences:\n    - https://docs.github.com/en/enterprise-cloud@latest/organizations/managing-git-access-to-your-organizations-repositories/about-ssh-certificate-authorities\n    - 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\nauthor: Romain Gaillard (@romain-gaillard)\ndate: 2024-07-29\ntags:\n    - attack.initial-access\n    - attack.persistence\n    - attack.privilege-escalation\n    - attack.stealth\n    - attack.t1078.004\nlogsource:\n    product: github\n    service: audit\n    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'\ndetection:\n    selection:\n        action:\n            - 'ssh_certificate_authority.create' # An SSH certificate authority for an organization or enterprise was created.\n            - 'ssh_certificate_requirement.disable' # The requirement for members to use SSH certificates to access an organization resources was disabled.\n    condition: selection\nfalsepositives:\n    - Allowed administrative activities.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1078.004","id":"T1078.004","name":"Cloud Accounts","page":"techniques/enterprise/T1078.004/"}],"data_path":"data/detection-rules/2f575940-d85e-4ddc-af13-17dad6f1a0ef.json","kind":"sigma"}