Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
This studio is built around Phoenix's own rule corpus, not a blank editor. Search by title or rule id, choose a live sigma-cli backend, then reveal pipelines only when you actually need them.
Indexed Rules
3,707
Ready to search
Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Cloudflared Tunnel Execution
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Cloudflared Tunnel Execution
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: Cloudflared Tunnel Execution
id: 9a019ffc-3580-4c9d-8d87-079f7e8d3fd4
status: test
description: Detects execution of the "cloudflared" tool to connect back to a tunnel. This was seen used by threat actors to maintain persistence and remote access to compromised networks.
references:
- https://blog.reconinfosec.com/emergence-of-akira-ransomware-group
- https://github.com/cloudflare/cloudflared
- https://developers.cloudflare.com/cloudflare-one/connections/connect-apps
author: Janantha Marasinghe, Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-17
modified: 2023-12-20
tags:
- attack.command-and-control
- attack.t1102
- attack.t1090
- attack.t1572
logsource:
category: process_creation
product: windows
detection:
selection:
CommandLine|contains|all:
- ' tunnel '
- ' run '
CommandLine|contains:
- '-config '
- '-credentials-contents '
- '-credentials-file '
- '-token '
condition: selection
falsepositives:
- Legitimate usage of Cloudflared tunnel.
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/process_creation/proc_creation_win_cloudflared_tunnel_run.yml