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
Microsoft Defender Blocked from Loading Unsigned DLL
Target Profile
Splunk
Splunk through pysigma-backend-splunk.
Format Mode
Default
Default pySigma output mode for this backend.
Conversion Output
Microsoft Defender Blocked from Loading Unsigned DLL
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: Microsoft Defender Blocked from Loading Unsigned DLL
id: 0b0ea3cc-99c8-4730-9c53-45deee2a4c86
status: test
description: Detects Code Integrity (CI) engine blocking Microsoft Defender's processes (MpCmdRun and NisSrv) from loading unsigned DLLs which may be an attempt to sideload arbitrary DLL
references:
- https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool
author: Bhabesh Raj
date: 2022-08-02
modified: 2022-09-28
tags:
- attack.privilege-escalation
- attack.persistence
- attack.defense-evasion
- attack.t1574.001
logsource:
product: windows
service: security-mitigations
detection:
selection:
EventID:
- 11
- 12 # MDE: ExploitGuardNonMicrosoftSignedBlocked
ProcessPath|endswith:
- '\MpCmdRun.exe'
- '\NisSrv.exe'
condition: 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/builtin/security_mitigations/win_security_mitigations_defender_load_unsigned_dll.yml