Malicious Chisel Reverse Tunnel Execution for Protocol Tunneling

ATT&CK techniques

C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1572Protocol Tunneling
Exfiltration
Impact

What it detects

This rule detects execution of the Chisel tunneling tool either by binary name or by a client command establishing a reverse tunnel, the protocol tunneling method used by Scattered Spider for covert connectivity and persistence. Chisel builds an encrypted tunnel that lets adversaries pivot through the network and evade egress controls. The tool has no legitimate enterprise use in most environments.

Reporting behind it

Related detections9 linkedT1572 — drag to rearrange

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Suspicious VS Code Tunnel Establishment for Covert Access (via process_creation)

Suspicious SCATTERED SPIDER Chisel Tunnel to Cloudflare Quick Tunnel (via process_creation)

Suspicious Cloudflared Tunnel Execution for Command and Control by Kraken Ransomware

Suspicious OpenSSH Reverse Tunnel Over HTTPS Port (Chaos Ransomware)

Possible Plink Reverse Tunnel Command Line Execution

Chisel Reverse Tunnel Tool Execution from Temporary Directory

Malicious Chisel Reverse Tunnel Execution for Protocol Tunneling

Pivot detection · T1572 · 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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