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
RunMRU Registry Key Deletion
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
RunMRU Registry Key Deletion
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: RunMRU Registry Key Deletion
id: c11aecef-9c37-45a6-9c07-bc0782f963fd
related:
- id: 3a9b8c1e-5b2e-4f7a-9d1c-2a7f3b6e1c55
type: similar
status: experimental
description: |
Detects deletion of the RunMRU registry key, which stores the history of commands executed via the Run dialog.
In the clickfix techniques, the phishing lures instruct users to open a run dialog through (Win + R) and execute malicious commands.
Adversaries may delete this key to cover their tracks after executing commands.
references:
- https://www.zscaler.com/blogs/security-research/coldriver-updates-arsenal-baitswitch-and-simplefix
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-09-25
tags:
- attack.defense-evasion
- attack.t1070.003
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith: '\reg.exe'
- OriginalFileName: 'reg.exe'
selection_cli:
CommandLine|contains|all:
- ' del'
- '\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU'
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_reg_delete_runmru.yml