Detection rules › Sigma
Lolbin Unregmp2.exe Use As Proxy
Detect usage of the "unregmp2.exe" binary as a proxy to launch a custom version of "wmpnscfg.exe"
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 1: Process creation |
Rule body
title: Lolbin Unregmp2.exe Use As Proxy
id: 727454c0-d851-48b0-8b89-385611ab0704
status: test
description: Detect usage of the "unregmp2.exe" binary as a proxy to launch a custom version of "wmpnscfg.exe"
references:
- https://lolbas-project.github.io/lolbas/Binaries/Unregmp2/
author: frack113
date: 2022-12-29
modified: 2024-06-04
tags:
- attack.stealth
- attack.t1218
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith: '\unregmp2.exe'
- OriginalFileName: 'unregmp2.exe'
selection_cmd:
CommandLine|contains|windash: ' /HideWMP'
condition: all of selection_*
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
- Image|endswith: '\unregmp2.exe'
- OriginalFileName: 'unregmp2.exe'
Stage 2: selection_cmd
selection_cmd:
CommandLine|contains|windash: ' /HideWMP'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
CommandLine | match |
| field:"CommandLine" kind:match value:" /HideWMP" |
Image | ends_with |
| field:"Image" kind:ends_with value:"\unregmp2.exe" |
OriginalFileName | eq |
| field:"OriginalFileName" kind:eq value:"unregmp2.exe" |