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
Exchange ProxyShell Pattern
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Exchange ProxyShell Pattern
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: Exchange ProxyShell Pattern
id: 23eee45e-933b-49f9-ae1b-df706d2d52ef
status: test
description: Detects URL patterns that could be found in ProxyShell exploitation attempts against Exchange servers (failed and successful)
references:
- https://youtu.be/5mqid-7zp8k?t=2231
- https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html
- https://peterjson.medium.com/reproducing-the-proxyshell-pwn2own-exploit-49743a4ea9a1
author: Florian Roth (Nextron Systems), Rich Warren
date: 2021-08-07
modified: 2023-01-02
tags:
- attack.initial-access
- attack.t1190
- detection.emerging-threats
logsource:
category: webserver
detection:
selection_1:
sc-status: 401
selection_1_auto:
cs-uri-query|contains: '/autodiscover.json'
selection_1_uri:
cs-uri-query|contains:
- '/powershell'
- '/mapi/nspi'
- '/EWS'
- 'X-Rps-CAT'
selection_poc:
sc-status: 401
cs-uri-query|contains:
# since we don't know how it will appear in the log files, we'll just use all versions
- 'autodiscover.json?@'
- 'autodiscover.json%3f@'
- '%3f@foo.com'
- 'Email=autodiscover/autodiscover.json'
- 'json?@foo.com'
condition: all of selection_1* or selection_poc
falsepositives:
- Unknown
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules-emerging-threats/2021/Exploits/ProxyShell-Exploit/web_exchange_proxyshell.yml