Malicious Cloud Storage Destruction by Cloud Build Service Account

ATT&CK techniques

Initial Access → Impact

Recon
Resource Dev
Initial Access
- T1078.004Cloud Accounts
Execution
Persistence
- T1078.004Cloud Accounts
Priv Esc
- T1078.004Cloud Accounts
Defense Evasion
- T1078.004Cloud Accounts
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1485Data Destruction

What it detects

This rule detects a Google Cloud Build default service account invoking storage bucket or object deletion which was abused to destroy data by triggering builds that ran attacker controlled steps. Destructive storage operations originating from a cloudbuild or compute default service account rather than a human principal indicate potential data destruction through the Cloud Build pipeline.

Reporting behind it

Related detections9 linkedT1078.004 — drag to rearrange

Suspicious Secure Deletion of Free Space via Cipher (via process_creation)

HamsaUpdate Wiper Trigger via F5UPDATER ConfirmDeleteFiles Argument (via process_creation)

Possible Credential Stuffing Blocked by Conditional Access in Microsoft 365

Suspicious SES Account Sending Enablement and Identity Verification via CloudTrail

Possible Stolen AWS Credential Validation via STS GetCallerIdentity

Malicious Scheduled Task Deploying DYNOWIPER Payload (via process_creation)

Suspicious AWS Federated Console Login From Programmatic Credentials

Suspicious M365 Legacy Authentication via BAV2ROPC Client via m365

Suspicious STS AssumeRole With Exfil Session Name via CloudTrail (via cloudtrail)

Malicious Cloud Storage Destruction by Cloud Build Service Account

Pivot detection · T1078.004 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

Full detection rule

Unlock this rule to view and copy it

The detection logic is included with a plan. Everything else — context, mappings and implementation details — stays free on this page.

Sign in for 3 free unlocks

Signing in gives you 3 unlocks to spend on any rule in the library. No card, and they do not expire.

Also included

Unlocked rules convert on this page — to Splunk SPL or Splunk — Raw Index SPL or Microsoft Sentinel KQL or Microsoft Sentinel ASIM ASIM KQL or Microsoft Defender XDR KQL or Elastic Security KQL or Elastic Security Lucene or Elastic Security ES|QL or CrowdStrike Falcon CQL or SentinelOne PowerQuery or Palo Alto Cortex XDR XQL or Carbon Black Cloud Platform Search or Carbon Black EDR Process Search or Google Security Operations UDM Search or IBM QRadar AQL or Sumo Logic Cloud SIEM Rules expression or Rapid7 InsightIDR LEQL or Graylog Search or OpenSearch Lucene or OpenSearch PPL PPL or Grafana Loki LogQL or SQLite SQL or Zircolite SQLite — with the log-source profile the engine picked, the field map it used, and everything it could not express. Converting a rule you have unlocked costs no further credit.

See it run on a free rule →Convert your own rule →