Domain Added to Google Workspace Trusted Domainsedit
Detects when a domain is added to the list of trusted Google Workspace domains. An adversary may add a trusted domain in order to collect and exfiltrate data from their target’s organization with less restrictive security controls.
Rule type: query
Rule indices:
- filebeat-*
- logs-google_workspace*
Severity: high
Risk score: 73
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
- Defense Evasion
Version: 101 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 8.6.0
Rule authors: Elastic
Rule license: Elastic License v2
Potential false positivesedit
Trusted domains may be added by system 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.provider:admin and event.category:iam and event.action:ADD_TRUSTED_DOMAINS
Threat mappingedit
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
-
Technique:
- Name: Impair Defenses
- ID: T1562
- Reference URL: https://attack.mitre.org/techniques/T1562/
Rule version historyedit
- Version 101 (8.6.0 release)
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- Formatting only
- Version 100 (8.5.0 release)
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- Formatting only
- Version 14 (8.4.0 release)
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- Formatting only
- Version 12 (8.3.0 release)
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- Formatting only
- Version 10 (8.2.0 release)
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- Formatting only
- Version 6 (8.0.0 release)
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-
Updated query, changed from:
event.dataset:(gsuite.admin or google_workspace.admin) and event.provider:admin and event.category:iam and event.action:ADD_TRUSTED_DOMAINS
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- Version 5 (7.15.0 release)
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- Formatting only
- Version 4 (7.13.0 release)
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- Formatting only
- Version 3 (7.12.0 release)
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- Formatting only
- Version 2 (7.11.2 release)
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- Formatting only