Suspicious C2 Connection to AWS Lambda Function URL

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1102Web Service
Exfiltration
Impact

What it detects

This rule detects outbound connections to AWS Lambda function URLs in the ap-southeast-1 region. The backdoor targeting Southeast Asian governments tunnels novel covert C2 through Lambda function URLs to blend with legitimate cloud traffic. Endpoint processes contacting these on.aws endpoints warrant review for web-service C2 abuse.

Reporting behind it

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Suspicious C2 Connection to AWS Lambda Function URL

Pivot detection · T1102 · 9 related

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