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GCP Logging Bucket Deletionedit

Identifies a Logging bucket deletion in Google Cloud Platform (GCP). Log buckets are containers that store and organize log data. A deleted bucket stays in a pending state for 7 days, and Logging continues to route logs to the bucket during that time. To stop routing logs to a deleted bucket, you can delete the log sinks that have the bucket as their destination, or modify the filter for the sinks to stop it from routing logs to the deleted bucket. An adversary may delete a log bucket to evade detection.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-gcp*

Severity: medium

Risk score: 47

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Cloud
  • GCP
  • Continuous Monitoring
  • SecOps
  • Log Auditing

Version: 102 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.6.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positivesedit

Logging bucket deletions may be done by a system or network administrator. Verify whether the user email, resource name, and/or hostname should be making changes in your environment. Logging bucket deletions by unfamiliar users or hosts should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

Investigation guideedit












Rule queryedit








event.dataset:gcp.audit and
event.action:google.logging.v*.ConfigServiceV*.DeleteBucket and
event.outcome:success











Threat mappingedit




Framework: MITRE ATT&CKTM














Rule version historyedit










Version 102 (8.6.0 release)








    

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Version 100 (8.5.0 release)








    

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Version 9 (8.4.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    event.dataset:(googlecloud.audit or gcp.audit) and
event.action:google.logging.v*.ConfigServiceV*.DeleteBucket and
event.outcome:success
    

    

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Version 7 (8.2.0 release)








    

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Version 6 (8.1.0 release)








    

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Version 5 (7.13.0 release)








    

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Version 4 (7.12.0 release)








    

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Version 3 (7.11.2 release)








    

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Version 2 (7.11.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    event.dataset:googlecloud.audit and
event.action:google.logging.v*.ConfigServiceV*.DeleteBucket and
event.outcome:success
    

    

    • 


















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