Suspicious Reconnaissance Activity Via GatherNetworkInfo.VBS — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems). Source status: test; severity: high. Source dates: 2023-02-08 / not supplied.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: ade9f4f3bdbb8777fbb7724e1fd826c4675787e00d16ee8ea236df73905d830d

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: Suspicious Reconnaissance Activity Via GatherNetworkInfo.VBS
id: 07aa184a-870d-413d-893a-157f317f6f58
related:
    - id: f92a6f1e-a512-4a15-9735-da09e78d7273 # FileCreate
      type: similar
    - id: 575dce0c-8139-4e30-9295-1ee75969f7fe # ProcCreation LOLBIN
      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: Nasreddine Bencherchali (Nextron Systems)
date: 2023-02-08
tags:
    - attack.discovery
    - attack.execution
    - attack.t1615
    - attack.t1059.005
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains: 'gatherNetworkInfo.vbs'
    filter:
        Image|endswith:
            - '\cscript.exe'
            - '\wscript.exe'
    condition: selection and not filter
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

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