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
Suspicious Use of /dev/tcp
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Use of /dev/tcp
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: Suspicious Use of /dev/tcp
id: 6cc5fceb-9a71-4c23-aeeb-963abe0b279c
status: test
description: Detects suspicious command with /dev/tcp
references:
- https://www.andreafortuna.org/2021/03/06/some-useful-tips-about-dev-tcp/
- https://book.hacktricks.xyz/shells/shells/linux
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md#atomic-test-1---port-scan
author: frack113
date: 2021-12-10
modified: 2023-01-06
tags:
- attack.reconnaissance
logsource:
product: linux
detection:
keywords:
- 'cat </dev/tcp/'
- 'exec 3<>/dev/tcp/'
- 'echo >/dev/tcp/'
- 'bash -i >& /dev/tcp/'
- 'sh -i >& /dev/udp/'
- '0<&196;exec 196<>/dev/tcp/'
- 'exec 5<>/dev/tcp/'
- '(sh)0>/dev/tcp/'
- 'bash -c ''bash -i >& /dev/tcp/'
- 'echo -e ''#!/bin/bash\nbash -i >& /dev/tcp/'
condition: keywords
falsepositives:
- Unknown
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/linux/builtin/lnx_susp_dev_tcp.yml