title: Bitbucket Unauthorized Full Data Export Triggered
id: 34d81081-03c9-4a7f-91c9-5e46af625cde
status: test
description: Detects when full data export is attempted an unauthorized user.
references:
    - https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html
    - https://confluence.atlassian.com/bitbucketserver/secret-scanning-1157471613.html
author: Muhammad Faisal (@faisalusuf)
date: 2024-02-25
tags:
    - attack.collection
    - attack.resource-development
    - attack.t1213.003
    - attack.t1586
logsource:
    product: bitbucket
    service: audit
    definition: 'Requirements: "Advance" log level is required to receive these audit events.'
detection:
    selection:
        auditType.category: 'Data pipeline'
        auditType.action: 'Unauthorized full data export triggered'
    condition: selection
falsepositives:
    - Unlikely
level: critical

title: Bitbucket Full Data Export Triggered
id: 195e1b9d-bfc2-4ffa-ab4e-35aef69815f8
status: test
description: Detects when full data export is attempted.
references:
    - https://confluence.atlassian.com/bitbucketserver/audit-log-events-776640423.html
    - https://confluence.atlassian.com/adminjiraserver0811/importing-and-exporting-data-1019391889.html
author: Muhammad Faisal (@faisalusuf)
date: 2024-02-25
tags:
    - attack.collection
    - attack.t1213.003
logsource:
    product: bitbucket
    service: audit
    definition: 'Requirements: "Advance" log level is required to receive these audit events.'
detection:
    selection:
        auditType.category: 'Data pipeline'
        auditType.action: 'Full data export triggered'
    condition: selection
falsepositives:
    - Legitimate user activity.
level: high

title: Github Delete Action Invoked
id: 16a71777-0b2e-4db7-9888-9d59cb75200b
status: test
description: Detects delete action in the Github audit logs for codespaces, environment, project and repo.
author: Muhammad Faisal (@faisalusuf)
date: 2023-01-19
modified: 2026-03-09
references:
    - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/reviewing-the-audit-log-for-your-organization#audit-log-actions
    - https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/security-log-events#codespaces
tags:
    - attack.impact
    - attack.collection
    - attack.t1213.003
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:
            - 'codespaces.destroy'
            - 'environment.delete'
            - 'project.delete'
            - 'repo.destroy'
    condition: selection
falsepositives:
    - Validate the deletion activity is permitted. The "actor" field need to be validated.
level: medium

title: Github Outside Collaborator Detected
id: eaa9ac35-1730-441f-9587-25767bde99d7
status: test
description: |
    Detects when an organization member or an outside collaborator is added to or removed from a project board or has their permission level changed or when an owner removes an outside collaborator from an organization or when two-factor authentication is required in an organization and an outside collaborator does not use 2FA or disables 2FA.
author: Muhammad Faisal (@faisalusuf)
date: 2023-01-20
references:
    - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/reviewing-the-audit-log-for-your-organization#audit-log-actions
    - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-two-factor-authentication-for-your-organization/requiring-two-factor-authentication-in-your-organization
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.collection
    - attack.t1098.001
    - attack.t1098.003
    - attack.t1213.003
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:
            - 'org.remove_outside_collaborator'
            - 'project.update_user_permission'
    condition: selection
falsepositives:
    - Validate the actor if permitted to access the repo.
    - Validate the Multifactor Authentication changes.
level: medium

title: Github Self Hosted Runner Changes Detected
id: f8ed0e8f-7438-4b79-85eb-f358ef2fbebd
status: test
description: |
    A self-hosted runner is a system that you deploy and manage to execute jobs from GitHub Actions on GitHub.com.
    This rule detects changes to self-hosted runners configurations in the environment. The self-hosted runner configuration changes once detected,
    it should be validated from GitHub UI because the log entry may not provide full context.
author: Muhammad Faisal (@faisalusuf)
date: 2023-01-27
references:
    - https://docs.github.com/en/actions/hosting-your-own-runners/about-self-hosted-runners#about-self-hosted-runners
    - https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/reviewing-the-audit-log-for-your-organization#search-based-on-operation
tags:
    - attack.impact
    - attack.discovery
    - attack.collection
    - attack.persistence
    - attack.privilege-escalation
    - attack.initial-access
    - attack.stealth
    - attack.t1526
    - attack.t1213.003
    - 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:
            - 'org.remove_self_hosted_runner'
            - 'org.runner_group_created'
            - 'org.runner_group_removed'
            - 'org.runner_group_runner_removed'
            - 'org.runner_group_runners_added'
            - 'org.runner_group_runners_updated'
            - 'org.runner_group_updated'
            - 'repo.register_self_hosted_runner'
            - 'repo.remove_self_hosted_runner'
    condition: selection
falsepositives:
    - Allowed self-hosted runners changes in the environment.
    - A self-hosted runner is automatically removed from GitHub if it has not connected to GitHub Actions for more than 14 days.
    - An ephemeral self-hosted runner is automatically removed from GitHub if it has not connected to GitHub Actions for more than 1 day.
level: low