Possible Persistence Through Event Viewer Events.asp (via registry_set)

title: Possible Persistence Through Event Viewer Events.asp (via registry_set)
id: 068bab71-199c-5091-99ae-17969fd6c2e3
status: stable
description: This rule detects potential registry persistence method using the Event Viewer "Events.asp" method
references:
    - https://attack.mitre.org/techniques/T1112/
    - https://twitter.com/nas_bench/status/1626648985824788480
    - https://admx.help/?Category=Windows_7_2008R2&Policy=Microsoft.Policies.InternetCommunicationManagement::EventViewer_DisableLinks
    - https://www.hexacorn.com/blog/2019/02/15/beyond-good-ol-run-key-part-103/
    - https://github.com/redcanaryco/atomic-red-team/blob/f296668303c29d3f4c07e42bdd2b28d8dd6625f9/atomics/T1112/T1112.md
author: Huntrule Team
date: 2026-01-13
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains:
            - '\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionProgram'
            - '\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionURL'
    filter_default_redirect_program:
        Image|endswith: 'C:\WINDOWS\system32\svchost.exe'
        TargetObject|endswith: '\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionProgram'
        Details: '%%SystemRoot%%\PCHealth\HelpCtr\Binaries\HelpCtr.exe'
    filter_default_redirect_program_cli:
        Image|endswith: 'C:\WINDOWS\system32\svchost.exe'
        TargetObject|endswith: '\Microsoft\Windows NT\CurrentVersion\Event Viewer\MicrosoftRedirectionProgramCommandLineParameters'
        Details: '-url hcp://services/centers/support?topic=%%s'
    filter_url:
        Details: 'http://go.microsoft.com/fwlink/events.asp'
    filter_cleaner:
        Details: '(Empty)'
    condition: selection and not 1 of filter_*
falsepositives:
    - Unknown
level: medium