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
Chopper Webshell Process Pattern
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Chopper Webshell Process 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: Chopper Webshell Process Pattern
id: fa3c117a-bc0d-416e-a31b-0c0e80653efb
status: test
description: Detects patterns found in process executions cause by China Chopper like tiny (ASPX) webshells
references:
- https://www.microsoft.com/security/blog/2022/09/30/analyzing-attacks-using-the-exchange-vulnerabilities-cve-2022-41040-and-cve-2022-41082/
author: Florian Roth (Nextron Systems), MSTI (query)
date: 2022-10-01
tags:
- attack.persistence
- attack.discovery
- attack.t1505.003
- attack.t1018
- attack.t1033
- attack.t1087
logsource:
category: process_creation
product: windows
detection:
selection_origin:
- Image|endswith: '\w3wp.exe'
- ParentImage|endswith: '\w3wp.exe'
selection_cmdline:
CommandLine|contains:
- '&ipconfig&echo'
- '&quser&echo'
- '&whoami&echo'
- '&c:&echo'
- '&cd&echo'
- '&dir&echo'
- '&echo [E]'
- '&echo [S]'
condition: all of selection_*
falsepositives:
- Unknown
level: high
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_webshell_chopper.yml