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« Application Added to Google Workspace Domain Attempt to Create Okta API Token »

Application Removed from Blocklist in Google Workspaceedit

Google Workspace administrators may be aware of malicious applications within the Google marketplace and block these applications for user security purposes. An adversary, with administrative privileges, may remove this application from the explicit block list to allow distribution of the application amongst users. This may also indicate the unauthorized use of an application that had been previously blocked before by a user with admin privileges.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-google_workspace*

Severity: medium

Risk score: 47

Runs every: 10 minutes

Searches indices from: now-130m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Cloud
  • Google Workspace
  • Continuous Monitoring
  • SecOps
  • Configuration Audit
  • Impair Defenses

Version: 2 (version history)

Added (Elastic Stack release): 8.5.0

Last modified (Elastic Stack release): 8.6.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positivesedit

Applications can be added and removed from blocklists by Google Workspace administrators. Verify that the configuration change was expected. Exceptions can be added to this rule to filter expected behavior.

Investigation guideedit

### Important Information Regarding Google Workspace Event Lag Times
- As per Google's documentation, Google Workspace administrators may observe lag times ranging from minutes up to 3 days between the time of an event's occurrence and the event being visible in the Google Workspace admin/audit logs.
- This rule is configured to run every 10 minutes with a lookback time of 130 minutes.
- To reduce the risk of false negatives, consider reducing the interval that the Google Workspace (formerly G Suite) Filebeat module polls Google's reporting API for new events.
- By default, `var.interval` is set to 2 hours (2h). Consider changing this interval to a lower value, such as 10 minutes (10m).
- See the following references for further information:
  - https://support.google.com/a/answer/7061566
  - https://www.elastic.co/guide/en/beats/filebeat/current/filebeat-module-google_workspace.html

Rule queryedit

event.dataset:"google_workspace.admin" and event.category:"iam" and
event.type:"change" and event.action:"CHANGE_APPLICATION_SETTING"
and google_workspace.admin.application.name:"Google Workspace
Marketplace" and google_workspace.admin.old_value: *allowed*false*
and google_workspace.admin.new_value: *allowed*true*

Threat mappingedit

Framework: MITRE ATT&CKTM

Rule version historyedit

Version 2 (8.6.0 release)
  • Formatting only
« Application Added to Google Workspace Domain Attempt to Create Okta API Token »