IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
GCP Logging Sink Modification
editGCP Logging Sink Modification
editIdentifies a modification to a logging sink in Google Cloud Platform (GCP). Logging compares the log entry to the sinks in that resource. Each sink whose filter matches the log entry writes a copy of the log entry to the sink’s export destination. An adversary may update a logging sink to exfiltrate logs to a different export destination.
Rule type: query
Rule indices:
- filebeat-*
- logs-gcp*
Severity: low
Risk score: 21
Runs every: 5m
Searches indices from: None (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: 8
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Setup The GCP Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.
Rule query
editevent.dataset:gcp.audit and event.action:google.logging.v*.ConfigServiceV*.UpdateSink and event.outcome:success
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Exfiltration
- ID: TA0010
- Reference URL: https://attack.mitre.org/tactics/TA0010/
-
Technique:
- Name: Transfer Data to Cloud Account
- ID: T1537
- Reference URL: https://attack.mitre.org/techniques/T1537/