Detection rules › Sigma
Uncommon Child Process Of BgInfo.EXE
Detects uncommon child processes of "BgInfo.exe" which could be a sign of potential abuse of the binary to proxy execution via external VBScript
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | T1059.005 Command and Scripting Interpreter: Visual Basic |
| Stealth | T1202 Indirect Command Execution, T1218 System Binary Proxy Execution |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
| Security-Auditing | Event ID 4688 | A new process has been created. |
Rule body yaml
title: Uncommon Child Process Of BgInfo.EXE
id: aaf46cdc-934e-4284-b329-34aa701e3771
related:
- id: 811f459f-9231-45d4-959a-0266c6311987
type: similar
status: test
description: Detects uncommon child processes of "BgInfo.exe" which could be a sign of potential abuse of the binary to proxy execution via external VBScript
references:
- https://lolbas-project.github.io/lolbas/OtherMSBinaries/Bginfo/
- https://oddvar.moe/2017/05/18/bypassing-application-whitelisting-with-bginfo/
author: Nasreddine Bencherchali (Nextron Systems), Beyu Denis, oscd.community
date: 2019-10-26
modified: 2023-08-16
tags:
- attack.execution
- attack.stealth
- attack.t1059.005
- attack.t1218
- attack.t1202
logsource:
category: process_creation
product: windows
detection:
selection:
ParentImage|endswith:
- '\bginfo.exe'
- '\bginfo64.exe'
condition: selection
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
ParentImage|endswith:
- '\bginfo.exe'
- '\bginfo64.exe'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
ParentImage | ends_with |
|