Detection rules › Sigma
New BgInfo.EXE Custom VBScript Registry Configuration
Detects setting of a new registry value related to BgInfo configuration, which can be abused to execute custom VBScript via "BgInfo.exe"
Known false positives
- Legitimate VBScript
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | |
| Defense Impairment |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 13: RegistryEvent (Value Set) |
Rule body
title: New BgInfo.EXE Custom VBScript Registry Configuration
id: 992dd79f-dde8-4bb0-9085-6350ba97cfb3
related:
- id: cd277474-5c52-4423-a52b-ac2d7969902f
type: similar
status: test
description: Detects setting of a new registry value related to BgInfo configuration, which can be abused to execute custom VBScript via "BgInfo.exe"
references:
- Internal Research
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-08-16
tags:
- attack.persistence
- attack.defense-impairment
- attack.t1112
logsource:
category: registry_set
product: windows
detection:
selection:
TargetObject|contains: '\Software\Winternals\BGInfo\UserFields\'
Details|startswith: '4' # WMI
condition: selection
falsepositives:
- Legitimate VBScript
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
TargetObject|contains: '\Software\Winternals\BGInfo\UserFields\'
Details|startswith: '4'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
Details | starts_with |
| field:"Details" kind:starts_with value:"4" |
TargetObject | match |
| field:"TargetObject" kind:match value:"\Software\Winternals\BGInfo\UserFields\" |