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 Curl Change User Agents - Linux
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Curl Change User Agents - Linux
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 Curl Change User Agents - Linux
id: b86d356d-6093-443d-971c-9b07db583c68
related:
- id: 3286d37a-00fd-41c2-a624-a672dcd34e60
type: derived
status: test
description: Detects a suspicious curl process start on linux with set useragent options
references:
- https://curl.se/docs/manpage.html
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-09-15
tags:
- attack.command-and-control
- attack.t1071.001
logsource:
category: process_creation
product: linux
detection:
selection:
Image|endswith: '/curl'
CommandLine|contains:
- ' -A '
- ' --user-agent '
condition: selection
falsepositives:
- Scripts created by developers and admins
- Administrative activity
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/linux/process_creation/proc_creation_lnx_susp_curl_useragent.yml