Google Workspace Granted Domain API Access — Sigma Rule

Rule metadata and linked tags

Author: Austin Songer. Source status: test; severity: medium. Source dates: 2021-08-23 / 2023-10-11.

{
  "product": "gcp",
  "service": "google_workspace.admin"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: e5243c31002ecb906030b4fddf66d18cceb0a9841127565c0f929fcee9d723df

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Google Workspace Granted Domain API Access
id: 04e2a23a-9b29-4a5c-be3a-3542e3f982ba
status: test
description: Detects when an API access service account is granted domain authority.
references:
    - https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3
    - https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-domain-settings#AUTHORIZE_API_CLIENT_ACCESS
author: Austin Songer
date: 2021-08-23
modified: 2023-10-11
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1098
logsource:
    product: gcp
    service: google_workspace.admin
detection:
    selection:
        eventService: admin.googleapis.com
        eventName: AUTHORIZE_API_CLIENT_ACCESS
    condition: selection
falsepositives:
    - Unknown

level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://cloud.google.com/logging/docs/audit/gsuite-audit-logging#3
• https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-domain-settings#AUTHORIZE_API_CLIENT_ACCESS