Rebuild Performance Counter Values Via Lodctr.EXE

 1title: Rebuild Performance Counter Values Via Lodctr.EXE
 2id: cc9d3712-6310-4320-b2df-7cb408274d53
 3status: experimental
 4description: 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.
 5references:
 6    - https://learn.microsoft.com/en-us/windows/security/identity-protection/virtual-smart-cards/virtual-smart-card-tpmvscmgr
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2023-06-15
 9modified: 2024-03-05
10tags:
11    - attack.execution
12logsource:
13    category: process_creation
14    product: windows
15detection:
16    selection_img:
17        Image|endswith: '\lodctr.exe'
18        OriginalFileName: 'LODCTR.EXE'
19    selection_cli:
20        CommandLine|contains|windash: ' -r'
21    condition: all of selection_*
22falsepositives:
23    - Legitimate usage by an administrator
24level: medium