Possible Change of IE Registry Settings (via registry_set)

title: Possible Change of IE Registry Settings (via registry_set)
id: 9710d8ab-74a4-5600-b276-2457eefcb93e
status: stable
description: This rule detects modification of the registry settings used for Internet Explorer and other Windows components that use these settings. An adversary can misuse this registry key to add a domain to the trusted sites Zone or insert JavaScript for persistence
references:
    - https://attack.mitre.org/techniques/T1112/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-4---add-domain-to-trusted-sites-zone
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1112/T1112.md#atomic-test-5---javascript-in-registry
author: Huntrule Team
date: 2026-03-14
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    category: registry_set
    product: windows
detection:
    selection_domains:
        TargetObject|contains: '\Software\Microsoft\Windows\CurrentVersion\Internet Settings'
    filter_main_dword:
        Details|startswith: 'DWORD'
    filter_main_null:
        Details:
    filter_main_office:
        Details:
            - 'Cookie:'
            - 'Visited:'
            - '(Empty)'
    filter_main_path:
        TargetObject|contains:
            - '\Cache'
            - '\ZoneMap'
            - '\WpadDecision'
    filter_main_binary:
        Details: 'Binary Data'
    filter_optional_accepted_documents:
        TargetObject|contains: '\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Accepted Documents'
    condition: selection_domains and not 1 of filter_main_* and not 1 of filter_optional_*
falsepositives:
    - Unknown
level: low