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

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 a Chisel client establishing a tunnel through a Cloudflare quick tunnel subdomain. SCATTERED SPIDER configured Chisel with trycloudflare subdomains to proxy traffic and maintain covert remote access. The combination of a client tunnel argument and the trycloudflare host is a strong indicator of protocol tunneling.

Reporting behind it

Related detections9 linkedT1572 — drag to rearrange

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Suspicious OpenSSH Reverse Tunnel Establishment via ssh.exe

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

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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