Google Workspace Application Access Level Modified

 Original Source: [Sigma source]
Title: Google Workspace Application Access Level Modified
Status: test
Description:Detects when an access level is changed for a Google workspace application. An access level is part of BeyondCorp Enterprise which is Google Workspace's way of enforcing Zero Trust model. An adversary would be able to remove access levels to gain easier access to Google workspace resources.
References:
  -https://developers.google.com/admin-sdk/reports/v1/appendix/activity/admin-application-settings
  -https://support.google.com/a/answer/9261439
Author: Bryan Lim
Date: 2024-01-12
modified:None
Tags:
  • -'attack.persistence'
  • -'attack.privilege-escalation'
  • -'attack.t1098.003'
Logsource:
  • product: gcp
  • service: google_workspace.admin
Detection:
  selection:
    eventService: 'admin.googleapis.com'
    eventName: 'CHANGE_APPLICATION_SETTING'
    setting_name|startswith: 'ContextAwareAccess'
  condition:selection
Falsepositives:
  -Legitimate administrative activities changing the access levels for an application
Level: medium