Detection rules › Sigma
New Github Organization Member Added
Detects when a new member is added or invited to a github organization.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1136.003 Create Account: Cloud Account |
Event coverage
| Provider | Event |
|---|---|
| GitHub-org | org.add_member |
| GitHub-org | org.invite_member |
Rules detecting the same action
Other rules on this platform that filter on the same API call or operation.
Rule body yaml
title: New Github Organization Member Added
id: 3908d64a-3c06-4091-b503-b3a94424533b
status: test
description: Detects when a new member is added or invited to a github organization.
author: Muhammad Faisal (@faisalusuf)
date: 2023-01-29
references:
- https://docs.github.com/en/organizations/keeping-your-organization-secure/managing-security-settings-for-your-organization/reviewing-the-audit-log-for-your-organization#dependabot_alerts-category-actions
tags:
- attack.persistence
- attack.t1136.003
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.add_member'
- 'org.invite_member'
condition: selection
falsepositives:
- Organization approved new members
level: informational
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
action:
- 'org.add_member'
- 'org.invite_member'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
action | eq |
|