Detection rules › Sigma
New Virtual Smart Card Created Via TpmVscMgr.EXE
Detects execution of "Tpmvscmgr.exe" to create a new virtual smart card.
Known false positives
- Legitimate usage by an administrator
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | No specific technique |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: New Virtual Smart Card Created Via TpmVscMgr.EXE
id: c633622e-cab9-4eaa-bb13-66a1d68b3e47
status: test
description: Detects execution of "Tpmvscmgr.exe" to create a new virtual smart card.
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
tags:
- attack.execution
logsource:
category: process_creation
product: windows
detection:
selection_img:
Image|endswith: '\tpmvscmgr.exe'
OriginalFileName: 'TpmVscMgr.exe'
selection_cli:
CommandLine|contains: 'create'
condition: all of selection_*
falsepositives:
- Legitimate usage by an administrator
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
Image|endswith: '\tpmvscmgr.exe'
OriginalFileName: 'TpmVscMgr.exe'
Stage 2: selection_cli
selection_cli:
CommandLine|contains: 'create'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match value:"create" |
Image | ends_with |
| field:"Image" kind:ends_with value:"\tpmvscmgr.exe" |
OriginalFileName | eq |
| field:"OriginalFileName" kind:eq value:"TpmVscMgr.exe" |