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 local pySigma backend, then reveal pipelines only when you actually need them.
Indexed Rules
3,731
Ready to search
Backends
17
Loaded from pysigma-node
pySigma Versions
10
Newest: 1.3.3
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Webshell ReGeorg Detection Via Web Logs
Target Profile
Splunk
Splunk through pysigma-backend-splunk.
Format Mode
Default
Default pySigma output mode for this backend.
Conversion Output
Webshell ReGeorg Detection Via Web Logs
Using Splunk · Default · pySigma 1.3.3
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion1.3.3
title: Webshell ReGeorg Detection Via Web Logs
id: 2ea44a60-cfda-11ea-87d0-0242ac130003
status: test
description: Certain strings in the uri_query field when combined with null referer and null user agent can indicate activity associated with the webshell ReGeorg.
references:
- https://community.rsa.com/community/products/netwitness/blog/2019/02/19/web-shells-and-netwitness-part-3
- https://github.com/sensepost/reGeorg
author: Cian Heasley
date: 2020-08-04
modified: 2023-01-02
tags:
- attack.persistence
- attack.t1505.003
logsource:
category: webserver
detection:
selection:
cs-uri-query|contains:
- 'cmd=read'
- 'connect&target'
- 'cmd=connect'
- 'cmd=disconnect'
- 'cmd=forward'
filter:
cs-referer: null
cs-user-agent: null
cs-method: POST
condition: selection and filter
falsepositives:
- Web applications that use the same URL parameters as ReGeorg
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/web/webserver_generic/web_webshell_regeorg.yml