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
Access To Windows DPAPI Master Keys By Uncommon Applications
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Access To Windows DPAPI Master Keys By Uncommon Applications
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: Access To Windows DPAPI Master Keys By Uncommon Applications
id: 46612ae6-86be-4802-bc07-39b59feb1309
status: test
description: |
Detects file access requests to the the Windows Data Protection API Master keys by an uncommon application.
This can be a sign of credential stealing. Example case would be usage of mimikatz "dpapi::masterkey" function
references:
- http://blog.harmj0y.net/redteaming/operational-guidance-for-offensive-user-dpapi-abuse/
- https://book.hacktricks.xyz/windows-hardening/windows-local-privilege-escalation/dpapi-extracting-passwords
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-10-17
modified: 2024-07-29
tags:
- attack.credential-access
- attack.t1555.004
logsource:
category: file_access
product: windows
definition: 'Requirements: Microsoft-Windows-Kernel-File ETW provider'
detection:
selection:
FileName|contains:
- '\Microsoft\Protect\S-1-5-18\' # For System32
- '\Microsoft\Protect\S-1-5-21-' # For Users
filter_system_folders:
Image|startswith:
- 'C:\Program Files\'
- 'C:\Program Files (x86)\'
- 'C:\Windows\system32\'
- 'C:\Windows\SysWOW64\'
condition: selection and not 1 of filter_*
falsepositives:
- Unknown
# Increase level after false positives filters are good enough
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/file/file_access/file_access_win_susp_dpapi_master_key_access.yml