Suspicious Lambda Function Creation Across Regions in AWS Extortion Operation

ATT&CK techniques

Execution → Exfiltration

Recon
Resource Dev
Initial Access
Execution
- T1651Cloud Administration Command
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
- T1567.002Exfiltration to Cloud Storage
Impact

What it detects

This rule detects creation of Lambda functions by an execution role provisioned for the large-scale cloud extortion operation, where the actor deployed functions across many regions to scan targets for exposed environment files and harvest secrets. Programmatic function creation spread across regions reflects automated abuse rather than normal deployment. Detecting these events exposes the actor building out exfiltration tooling.

Reporting behind it

Related detections9 linkedT1567.002 — drag to rearrange

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Malicious Data Exfiltration via MinIO Client from Windows Temp

Suspicious Data Exfiltration to Backblaze B2 via rclone (via process_creation)

Suspicious Rclone Exfiltration via Masqueraded svchost Process Creation

Suspicious Lambda Function Creation Across Regions in AWS Extortion Operation

Pivot detection · T1567.002 · 9 related

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

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