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blue-team-tools/rules/cloud/gcp/gcp_bucket_enumeration.yml
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2021-11-14 10:54:14 +01:00

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YAML

title: Google Cloud Storage Buckets Enumeration
id: e2feb918-4e77-4608-9697-990a1aaf74c3
description: Detects when storage bucket is enumerated in Google Cloud.
author: Austin Songer @austinsonger
status: experimental
date: 2021/08/14
references:
- https://cloud.google.com/storage/docs/json_api/v1/buckets
logsource:
product: gcp
service: gcp.audit
detection:
selection:
gcp.audit.method_name:
- storage.buckets.list
- storage.buckets.listChannels
condition: selection
level: low
tags:
- attack.discovery
falsepositives:
- Storage Buckets being enumerated may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
- Storage Buckets enumerated from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.