Detectionmediumtest

Internet Explorer DisableFirstRunCustomize Enabled

Detects changes to the Internet Explorer "DisableFirstRunCustomize" value, which prevents Internet Explorer from running the first run wizard the first time a user starts the browser after installing Internet Explorer or Windows.

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Launch
Nasreddine Bencherchali (Nextron Systems)Created Tue May 16Updated Tue Oct 07ab567429-1dfb-4674-b6d2-979fd2f9d125windows
Log Source
WindowsRegistry Set
ProductWindows← raw: windows
CategoryRegistry Set← raw: registry_set
Detection Logic
Detection Logic4 selectors
detection:
    selection:
        TargetObject|endswith: '\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize'
        Details:
            - 'DWORD (0x00000001)' # Home Page
            - 'DWORD (0x00000002)' # Welcome To IE
    filter_main_generic:
        Image:
            - 'C:\Windows\explorer.exe'
            - 'C:\Windows\System32\ie4uinit.exe'
    filter_optional_avira:
        Image|contains|all:
            - '\Temp\'
            - '\.cr\avira_'
        Details|contains: 'DWORD (0x00000001)'
    filter_optional_foxit:
        Image:
            - 'C:\Program Files (x86)\Foxit Software\Foxit PDF Reader\FoxitPDFReader.exe'
            - 'C:\Program Files\Foxit Software\Foxit PDF Reader\FoxitPDFReader.exe'
        Details|contains: 'DWORD (0x00000001)'
    condition: selection and not 1 of filter_main_* and not 1 of filter_optional_*
False Positives

As this is controlled by group policy as well as user settings. Some false positives may occur.

MITRE ATT&CK
Rule Metadata
Rule ID
ab567429-1dfb-4674-b6d2-979fd2f9d125
Status
test
Level
medium
Type
Detection
Created
Tue May 16
Modified
Tue Oct 07
Path
rules/windows/registry/registry_set/registry_set_internet_explorer_disable_first_run_customize.yml
Raw Tags
attack.defense-evasion
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