Harvesting Of Wifi Credentials Via Netsh.EXE — Sigma Rule

Rule metadata and linked tags

Author: Andreas Hunkeler (@Karneades), oscd.community. Source status: test; severity: medium. Source dates: 2020-04-20 / 2023-02-13.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 1c339a2a686b31f6f73ab14e7ac6b550546148961966c82f277c585396cc0de8

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: Harvesting Of Wifi Credentials Via Netsh.EXE
id: 42b1a5b8-353f-4f10-b256-39de4467faff
status: test
description: Detect the harvesting of wifi credentials using netsh.exe
references:
    - https://blog.malwarebytes.com/threat-analysis/2020/04/new-agenttesla-variant-steals-wifi-credentials/
author: Andreas Hunkeler (@Karneades), oscd.community
date: 2020-04-20
modified: 2023-02-13
tags:
    - attack.discovery
    - attack.credential-access
    - attack.t1040
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\netsh.exe'
        - OriginalFileName: 'netsh.exe'
    selection_cli:
        CommandLine|contains|all:
            - 'wlan'
            - ' s'
            - ' p'
            - ' k'
            - '=clear'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://blog.malwarebytes.com/threat-analysis/2020/04/new-agenttesla-variant-steals-wifi-credentials/