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WMI ActiveScriptEventConsumers Activity Via Scrcons.EXE DLL Load

Detects signs of the WMI script host process "scrcons.exe" loading scripting DLLs which could indicates WMI ActiveScriptEventConsumers EventConsumers activity.

MITRE ATT&CK

T1546.003

lateral-movementprivilege-escalationpersistence

Detection Query

selection:
  Image|endswith: \scrcons.exe
  ImageLoaded|endswith:
    - \vbscript.dll
    - \wbemdisp.dll
    - \wshom.ocx
    - \scrrun.dll
condition: selection

Author

Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)

Created

2020-09-02

Data Sources

windowsImage Load Events

Platforms

windows

References

Tags

attack.lateral-movementattack.privilege-escalationattack.persistenceattack.t1546.003

Raw Content

title: WMI ActiveScriptEventConsumers Activity Via Scrcons.EXE DLL Load
id: b439f47d-ef52-4b29-9a2f-57d8a96cb6b8
status: test
description: Detects signs of the WMI script host process "scrcons.exe" loading scripting DLLs which could indicates WMI ActiveScriptEventConsumers EventConsumers activity.
references:
    - https://twitter.com/HunterPlaybook/status/1301207718355759107
    - https://www.mdsec.co.uk/2020/09/i-like-to-move-it-windows-lateral-movement-part-1-wmi-event-subscription/
    - https://threathunterplaybook.com/hunts/windows/200902-RemoteWMIActiveScriptEventConsumers/notebook.html
author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
date: 2020-09-02
modified: 2023-02-22
tags:
    - attack.lateral-movement
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1546.003
logsource:
    category: image_load
    product: windows
detection:
    selection:
        Image|endswith: '\scrcons.exe'
        ImageLoaded|endswith:
            - '\vbscript.dll'
            - '\wbemdisp.dll'
            - '\wshom.ocx'
            - '\scrrun.dll'
    condition: selection
falsepositives:
    - Legitimate event consumers
    - Dell computers on some versions register an event consumer that is known to cause false positives when brightness is changed by the corresponding keyboard button
level: medium