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 Tunnels Related DNS Requests
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Cloudflared Tunnels Related DNS Requests
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 Tunnels Related DNS Requests
id: a1d9eec5-33b2-4177-8d24-27fe754d0812
related:
- id: 7cd1dcdc-6edf-4896-86dc-d1f19ad64903
type: similar
status: test
description: |
Detects DNS requests to Cloudflared tunnels domains.
Attackers can abuse that feature to establish a reverse shell or persistence on a machine.
references:
- https://www.guidepointsecurity.com/blog/tunnel-vision-cloudflared-abused-in-the-wild/
- Internal Research
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-12-20
tags:
- attack.command-and-control
- attack.t1071.001
- attack.t1572
logsource:
category: dns_query
product: windows
detection:
selection:
QueryName|endswith:
- '.v2.argotunnel.com'
- 'protocol-v2.argotunnel.com'
- 'trycloudflare.com'
- 'update.argotunnel.com'
condition: selection
falsepositives:
- Legitimate use of cloudflare tunnels will also trigger this.
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/dns_query/dns_query_win_cloudflared_communication.yml