Wireless Credential Dumping using Netsh Command

Elastic Stack Serverless Security

Identifies attempts to dump Wireless saved access keys in clear text using the Windows built-in utility Netsh.

Rule type: eql

Rule indices:

• winlogbeat-*
• logs-endpoint.events.*
• logs-windows.*
• endgame-*

Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (https://www.elastic.co/guide/en/elasticsearch/reference/current/common-options.html#date-math[Date Math format], see also Additional look-back time)

Maximum alerts per execution: 100

References:

• https://learn.microsoft.com/en-us/windows-server/networking/technologies/netsh/netsh-contexts
• https://www.geeksforgeeks.org/how-to-find-the-wi-fi-password-using-cmd-in-windows/

Tags:

• Elastic
• Host
• Windows
• Threat Detection
• Credential Access
• Discovery
• Elastic Endgame

Version: 2

Rule authors:

• Elastic

Rule license: Elastic License v2

process where event.type == "start" and
 (process.name : "netsh.exe" or process.pe.original_file_name == "netsh.exe") and
  process.args : "wlan" and process.args : "key*clear"

Framework: MITRE ATT&CKTM

• Tactic:

  • Name: Credential Access
  • ID: TA0006
  • Reference URL: https://attack.mitre.org/tactics/TA0006/

• Technique:

  • Name: OS Credential Dumping
  • ID: T1003
  • Reference URL: https://attack.mitre.org/techniques/T1003/

• Technique:

  • Name: Credentials from Password Stores
  • ID: T1555
  • Reference URL: https://attack.mitre.org/techniques/T1555/

• Tactic:

  • Name: Discovery
  • ID: TA0007
  • Reference URL: https://attack.mitre.org/tactics/TA0007/

• Technique:

  • Name: System Information Discovery
  • ID: T1082
  • Reference URL: https://attack.mitre.org/techniques/T1082/