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
Rebuild Performance Counter Values Via Lodctr.EXE
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Rebuild Performance Counter Values Via Lodctr.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: Rebuild Performance Counter Values Via Lodctr.EXE
id: cc9d3712-6310-4320-b2df-7cb408274d53
status: test
description: Detects the execution of "lodctr.exe" to rebuild the performance counter registry values. This can be abused by attackers by providing a malicious config file to overwrite performance counter configuration to confuse and evade monitoring and security solutions.
references:
- https://learn.microsoft.com/en-us/windows/security/identity-protection/virtual-smart-cards/virtual-smart-card-tpmvscmgr
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-06-15
modified: 2024-03-05
tags:
- attack.execution
logsource:
category: process_creation
product: windows
detection:
selection_img:
Image|endswith: '\lodctr.exe'
OriginalFileName: 'LODCTR.EXE'
selection_cli:
CommandLine|contains|windash: ' -r'
condition: all of selection_*
falsepositives:
- Legitimate usage by an administrator
level: medium
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_lodctr_performance_counter_tampering.yml