New Netsh Helper DLL Registered From A Suspicious Location

Title: New Netsh Helper DLL Registered From A Suspicious Location
Status: test
Description:Detects changes to the Netsh registry key to add a new DLL value that is located on a suspicious location. This change might be an indication of a potential persistence attempt by adding a malicious Netsh helper
References:
  -https://www.ired.team/offensive-security/persistence/t1128-netsh-helper-dll
  -https://pentestlab.blog/2019/10/29/persistence-netsh-helper-dll/
Author: Nasreddine Bencherchali (Nextron Systems)
Date: 2023-11-28
modified:None
Tags:

• -'attack.privilege-escalation'
• -'attack.persistence'
• -'attack.t1546.007'

Logsource:

• category: registry_set
• product: windows

Detection:
  selection_target:
    TargetObject|contains: '\SOFTWARE\Microsoft\NetSh'
  selection_folders_1:
    Details|contains:
      -':\Perflogs\'
      -':\Users\Public\'
      -':\Windows\Temp\'
      -'\AppData\Local\Temp\'
      -'\Temporary Internet'

  selection_folders_2:
    - Details|contains|all:
      - ':\Users\'
      - '\Favorites\'
    - Details|contains|all:
      - ':\Users\'
      - '\Favourites\'
    - Details|contains|all:
      - ':\Users\'
      - '\Contacts\'
    - Details|contains|all:
      - ':\Users\'
      - '\Pictures\'
  condition:selection_target and 1 of selection_folders_*
Falsepositives:
  -Unknown
Level: high