Potential Binary Proxy Execution Via VSDiagnostics.EXE — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: medium. Source dates: 2023-08-03 / not supplied.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 086eebb7b501948686f0bfb42a8619284523faa8b9bcb8c4883bf0c4f96eee4a

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Potential Binary Proxy Execution Via VSDiagnostics.EXE
id: ac1c92b4-ac81-405a-9978-4604d78cc47e
status: test
description: Detects execution of "VSDiagnostics.exe" with the "start" command in order to launch and proxy arbitrary binaries.
references:
    - https://twitter.com/0xBoku/status/1679200664013135872
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-08-03
tags:
    - attack.stealth
    - attack.t1218
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\VSDiagnostics.exe'
        - OriginalFileName: 'VSDiagnostics.exe'
    selection_cli_start:
        CommandLine|contains: 'start'
    selection_cli_launch:
        CommandLine|contains:
            - ' /launch:'
            - ' -launch:'
    condition: all of selection_*
falsepositives:
    - Legitimate usage for tracing and diagnostics purposes
level: medium

Original YAML and metadata in JSON

False positives

• Legitimate usage for tracing and diagnostics purposes

Source references

• https://twitter.com/0xBoku/status/1679200664013135872