Cloudflared Quick Tunnel Execution
Detects creation of an ad-hoc Cloudflare Quick Tunnel, which can be used to tunnel local services such as HTTP, RDP, SSH and SMB. The free TryCloudflare Quick Tunnel will generate a random subdomain on…
Description
Detects creation of an ad-hoc Cloudflare Quick Tunnel, which can be used to tunnel local services such as HTTP, RDP, SSH and SMB. The free TryCloudflare Quick Tunnel will generate a random subdomain on trycloudflare[.]com, following a call to api[.]trycloudflare[.]com. The tool has been observed in use by threat groups including Akira ransomware.
Detection logic
Detection requirements
- Platform
- ESXiLinuxmacOSNetwork DevicesWindows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
- Log source product
- windows
- Log source category
- process_creation
Known benign triggers
- Legitimate usage of Cloudflare Quick Tunnel
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
References
| Reference | Cited by |
|---|---|
| developers.cloudflare.com/cloudflare-one/connections/connect-networks/do-more-with-tunnels/trycloudflare/ | 3 |
| github.com/cloudflare/cloudflared | 7from 2 sources |
| www.guidepointsecurity.com/blog/tunnel-vision-cloudflared-abused-in-the-wild/ | 7from 2 sources |
| www.intrinsec.com/akira_ransomware/ | 3 |
From the source
- At source
- Open at source
- Upstream identifier
- 222129f7-f4dc-4568-b0d2-22440a9639ba
- Tagged by the source as
- attack.command-and-control
Licence
- Published under
- Detection Rule License 1.1Read the licence
- Attribution
- Required
Authorship
- Written by
- Published
- Aug 26, 2026
- Version
- 1