Suspicious GCP Metadata Service Account Enumeration via Command Line on Linux

PremiumReviewedSigma · Medium · v1
Product
linux
Category
process_creation
Author
HuntRule
Published
2026-11-05
Updated
2026-11-05

ATT&CK techniques

Initial Access → Cred Access
  1. Recon

  2. Resource Dev

  3. Execution

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

This rule detects command line access to the GCP compute metadata service account endpoint which SSRF exploitation uses to enumerate and steal service account credentials from cloud workloads. Direct querying of the computeMetadata service accounts path outside of expected SDK activity indicates credential harvesting from the instance metadata service.

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Suspicious SSRF Probe for Cloud Instance Metadata Service
Malicious Cloud Metadata Credential SSRF via HTTP (via proxy)
Possible Pre-Auth SSRF via VMware Workspace One UEM BlobHandler CVE-2021-22054
Suspicious GCP Metadata Service Account Enumeration via Command Line on Linux
Pivot detection · T1190 · 9 related

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