Suspicious Cloudflare Tunnel Masquerading as conhost.exe During Medusa Operations (via process_creation)

ATT&CK techniques

Defense Evasion → C2

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1036.005Match Legitimate Resource Name or Location
Cred Access
Discovery
Lateral Movement
Collection
C2
- T1572Protocol Tunneling
Exfiltration
Impact

What it detects

This rule detects a binary named conhost.exe running Cloudflare tunnel arguments, a masquerade Storm-1175 uses by renaming the cloudflared client to conhost.exe to establish covert command and control during Medusa ransomware operations. Legitimate conhost.exe never runs tunnel parameters, so this combination surfaces a disguised tunneling channel used for remote access and exfiltration.

Reporting behind it

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Suspicious Cloudflare Tunnel Masquerading as conhost.exe During Medusa Operations (via process_creation)

Pivot detection · T1572 · 9 related

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