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
Katz Stealer Suspicious User-Agent
Target Profile
Splunk
Splunk through pysigma-backend-splunk.
Format Mode
Default
Default pySigma output mode for this backend.
Conversion Output
Katz Stealer Suspicious User-Agent
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: Katz Stealer Suspicious User-Agent
id: 834c6d2f-5e98-4b2a-b453-0c4f234afedd
status: experimental
description: |
Detects network connections with a suspicious user-agent string containing "katz-ontop", which may indicate Katz Stealer activity.
references:
- Internal Research
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-05-22
tags:
- attack.command-and-control
- attack.t1071.001
- detection.emerging-threats
logsource:
product: zeek
service: http
detection:
selection:
user_agent|contains: 'katz-ontop'
condition: selection
falsepositives:
- Unlikely
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules-emerging-threats/2025/Malware/Katz-Stealer/zeek_http_katz_stealer_susp_useragent.yml