Detection rules › Sigma
REGISTER_APP.VBS Proxy Execution
Detects the use of a Microsoft signed script 'REGISTER_APP.VBS' to register a VSS/VDS Provider as a COM+ application.
Known false positives
- Legitimate usage of the script. Always investigate what's being registered to confirm if it's benign
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
| Security-Auditing | Event ID 4688: A new process has been created. |
Rule body
title: REGISTER_APP.VBS Proxy Execution
id: 1c8774a0-44d4-4db0-91f8-e792359c70bd
status: test
description: Detects the use of a Microsoft signed script 'REGISTER_APP.VBS' to register a VSS/VDS Provider as a COM+ application.
references:
- https://twitter.com/sblmsrsn/status/1456613494783160325?s=20
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-19
tags:
- attack.stealth
- attack.t1218
logsource:
category: process_creation
product: windows
detection:
selection:
CommandLine|contains|all:
- '\register_app.vbs'
- '-register'
condition: selection
falsepositives:
- Legitimate usage of the script. Always investigate what's being registered to confirm if it's benign
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
CommandLine|contains|all:
- '\register_app.vbs'
- '-register'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match |