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
System Language Discovery via Reg.Exe
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
System Language Discovery via Reg.Exe
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: System Language Discovery via Reg.Exe
id: c43a5405-e8e1-4221-9ac9-dbe3fa14e886
status: experimental
description: |
Detects the usage of Reg.Exe to query system language settings.
Attackers may discover the system language to determine the geographic location of victims, customize payloads for specific regions,
or avoid targeting certain locales to evade detection.
references:
- https://scythe.io/threat-thursday/threatthursday-darkside-ransomware
author: Marco Pedrinazzi (@pedrinazziM) (InTheCyber)
date: 2026-01-09
tags:
- attack.discovery
- attack.t1614.001
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith: '\reg.exe'
- OriginalFileName: 'reg.exe'
selection_cli:
CommandLine|contains|all:
- 'query'
- 'Control\Nls\Language'
condition: all of selection_*
falsepositives:
- Unknown
level: medium
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_reg_system_language_discovery/info.yml
simulation:
- type: atomic-red-team
name: Discover System Language by Registry Query
technique: T1614.001
atomic_guid: 631d4cf1-42c9-4209-8fe9-6bd4de9421be
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_reg_system_language_discovery.yml