VMMap Signed Dbghelp.DLL Possible Sideloading (via image_load)

This rule detects potential DLL sideloading of a signed dbghelp.dll by the Sysinternals VMMap.

SigmamediumWindowsv1
sigma
title: VMMap Signed Dbghelp.DLL Possible Sideloading (via image_load)
id: 8c8cbbe1-bb5d-5ace-8860-497b077282d0
status: stable
description: This rule detects potential DLL sideloading of a signed dbghelp.dll by the Sysinternals VMMap.
references:
    - https://attack.mitre.org/techniques/T1574/001/
    - https://techcommunity.microsoft.com/t5/sysinternals-blog/zoomit-v7-1-procdump-2-0-for-linux-process-explorer-v17-05/ba-p/3884766
author: Huntrule Team
date: 2026-04-18
tags:
    - attack.persistence
    - attack.privilege-escalation
    - attack.execution
    - attack.stealth
    - attack.t1574.001
logsource:
    category: image_load
    product: windows
detection:
    selection:
        ImageLoaded|contains: 'C:\Debuggers\dbghelp.dll'
        Image|endswith:
            - '\vmmap.exe'
            - '\vmmap64.exe'
        Signed: 'true'
    condition: selection
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.