Potential Reconnaissance Activity Via GatherNetworkInfo.VBS — Sigma Rule

Rule metadata and linked tags

Author: blueteamer8699. Source status: test; severity: medium. Source dates: 2022-01-03 / 2023-02-08.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 1f28b5076bb9235ba20d8568568c4bf2976996d36f0aab943d91f2d79d448371

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 Reconnaissance Activity Via GatherNetworkInfo.VBS
id: 575dce0c-8139-4e30-9295-1ee75969f7fe
related:
    - id: f92a6f1e-a512-4a15-9735-da09e78d7273 # FileCreate
      type: similar
    - id: 07aa184a-870d-413d-893a-157f317f6f58 # ProcCreation Susp
      type: similar
status: test
description: Detects execution of the built-in script located in "C:\Windows\System32\gatherNetworkInfo.vbs". Which can be used to gather information about the target machine
references:
    - https://posts.slayerlabs.com/living-off-the-land/#gathernetworkinfovbs
    - https://www.mandiant.com/resources/blog/trojanized-windows-installers-ukrainian-government
author: blueteamer8699
date: 2022-01-03
modified: 2023-02-08
tags:
    - attack.discovery
    - attack.execution
    - attack.t1615
    - attack.t1059.005
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith:
              - '\cscript.exe'
              - '\wscript.exe'
        - OriginalFileName:
              - 'cscript.exe'
              - 'wscript.exe'
    selection_cli:
        CommandLine|contains: 'gatherNetworkInfo.vbs'
    condition: all of selection_*
falsepositives:
    - Administrative activity
level: medium

Original YAML and metadata in JSON

False positives

• Administrative activity

Source references

• https://posts.slayerlabs.com/living-off-the-land/#gathernetworkinfovbs
• https://www.mandiant.com/resources/blog/trojanized-windows-installers-ukrainian-government