Elastic Security Detection Rules

GCP Storage Bucket Configuration Modification

Last updated 7 months ago on 2025-01-15
Created 5 years ago on 2020-09-22

About

Identifies when the configuration is modified for a storage bucket in Google Cloud Platform (GCP). An adversary may modify the configuration of a storage bucket in order to weaken the security controls of their target's environment.
Tags
Domain: CloudData Source: GCPData Source: Google Cloud PlatformUse Case: Identity and Access AuditTactic: Defense EvasionLanguage: kuery
Severity
medium
Risk Score
47
MITRE ATT&CK™

Defense Evasion (TA0005)(opens in a new tab or window)

↳ Modify Cloud Compute Infrastructure (T1578)(opens in a new tab or window)

False Positive Examples
Storage bucket configuration may be modified by system administrators. Verify that the configuration change was expected. Exceptions can be added to this rule to filter expected behavior.
License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Query (Kibana Query Language)
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
filebeat-*logs-gcp*
Related Integrations

gcp(opens in a new tab or window)

Query
event.dataset:gcp.audit and event.action:"storage.buckets.update" and event.outcome:success

Install detection rules in Elastic Security

Detect GCP Storage Bucket Configuration Modification in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).