Sigma rule: New Netsh Helper DLL Registered From A Suspicious Location

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9c827afc9755, updated 2023-11-28T00:00:00.000Z.

Rule

Title
New Netsh Helper DLL Registered From A Suspicious Location
Status
test
Level
high
Author
Nasreddine Bencherchali (Nextron Systems)
Date
2023-11-28
File
rules/windows/registry/registry_set/registry_set_netsh_help_dll_persistence_susp_location.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

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

Log source

product
windows
category
registry_set

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_*

False positives (as the rule lists them)

  • Unknown

Tags

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

MITRE ATT&CK ids this rule names

Related rules

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_netsh_help_dll_persistence_susp_location.yml

Sources and licences

  • SigmaHQ

    "New Netsh Helper DLL Registered From A Suspicious Location" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/registry/registry_set/registry_set_netsh_help_dll_persistence_susp_location.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: New Netsh Helper DLL Registered From A Suspicious Location",
entity page, dataset version ref-9c827afc9755, updated 2023-11-28T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/e7b18879-676e-4a0e-ae18-27039185a8e7 (accessed 2026-11-03).
Underlying source: SigmaHQ rule e7b18879-676e-4a0e-ae18-27039185a8e7, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.