Possible Persistence Through Netsh Helper DLL - Registry (via registry_set)

This rule detects changes to the Netsh registry key to add a new DLL value. This change might be an indication of a potential persistence attempt by adding a hostile Netsh helper

SigmamediumWindowsv1
sigma
title: Possible Persistence Through Netsh Helper DLL - Registry (via registry_set)
id: e7af82dd-2a8a-55e7-b6ea-f15a0bb299f4
status: stable
description: This rule detects changes to the Netsh registry key to add a new DLL value. This change might be an indication of a potential persistence attempt by adding a hostile Netsh helper
references:
    - https://attack.mitre.org/techniques/T1546/007/
    - https://www.ired.team/offensive-security/persistence/t1128-netsh-helper-dll
    - https://pentestlab.blog/2019/10/29/persistence-netsh-helper-dll/
author: Huntrule Team
date: 2026-06-23
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1546.007
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: '\SOFTWARE\Microsoft\NetSh'
        Details|contains: '.dll'
    filter_main_poqexec:
        Image: 'C:\Windows\System32\poqexec.exe'
        Details:
            - 'ipmontr.dll'
            - 'iasmontr.dll'
            - 'ippromon.dll'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.