sigmaDRL-1.1from SigmaHQ/sigma

Driver Added To Disallowed Images In HVCI - Registry

Detects changes to the "HVCIDisallowedImages" registry value to potentially add a driver to the list, in order to prevent it from loading.

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Rule sourcerules/windows/registry/registry_set/registry_set_hvci_disallowed_images.yml

title: Driver Added To Disallowed Images In HVCI - Registry
id: 555155a2-03bf-4fe7-af74-d176b3fdbe16
related:
    - id: 44cee399-f6b1-45cc-a87c-ea14c6064d6b
      type: similar
status: test
description: |
    Detects changes to the "HVCIDisallowedImages" registry value to potentially add a driver to the list, in order to prevent it from loading.
references:
    - https://github.com/yardenshafir/conference_talks/blob/3de1f5d7c02656c35117f067fbff0a219c304b09/OffensiveCon_2023_Your_Mitigations_are_My_Opportunities.pdf
    - https://x.com/yarden_shafir/status/1822667605175324787
author: Nasreddine Bencherchali (Nextron Systems), Omar Khaled (@beacon_exe)
date: 2023-12-05
modified: 2024-08-21
tags:
    - attack.defense-evasion
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains|all:
            - '\Control\CI\'
            - '\HVCIDisallowedImages'
    condition: selection
falsepositives:
    - Legitimate usage of this key would also trigger this. Investigate the driver being added and make sure its intended
level: high