Google Workspace Password Policy Modified

Elastic Stack Serverless Security

Detects when a Google Workspace password policy is modified. An adversary may attempt to modify a password policy in order to weaken an organization’s security controls.

Rule type: query

Rule indices:

• filebeat-*
• logs-google_workspace*

Severity: medium

Risk score: 47

Runs every: 10m

Searches indices from: now-130m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

• Elastic
• Cloud
• Google Workspace
• Continuous Monitoring
• SecOps
• Identity and Access

Version: 5

Rule authors:

• Elastic

Rule license: Elastic License v2

The Google Workspace Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

• 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/8.17/filebeat-module-google_workspace.html

event.dataset:(gsuite.admin or google_workspace.admin) and
  event.provider:admin and event.category:iam and
  event.action:(CHANGE_APPLICATION_SETTING or CREATE_APPLICATION_SETTING) and
  gsuite.admin.setting.name:(
    "Password Management - Enforce strong password" or
    "Password Management - Password reset frequency" or
    "Password Management - Enable password reuse" or
    "Password Management - Enforce password policy at next login" or
    "Password Management - Minimum password length" or
    "Password Management - Maximum password length"
  ) or
  google_workspace.admin.setting.name:(
    "Password Management - Enforce strong password" or
    "Password Management - Password reset frequency" or
    "Password Management - Enable password reuse" or
    "Password Management - Enforce password policy at next login" or
    "Password Management - Minimum password length" or
    "Password Management - Maximum password length"
  )