Getuidx64 Require Administrator Privileges

Rarely, getuidx64 might be part of a driver or kernel-level component. Kernel modules always run with the highest privilege ( Ring 0 ), but loading them requires administrative rights.

Do not use custom-named privilege checkers. Instead, use proper Windows APIs: getuidx64 require administrator privileges

Bad (custom):

bool getuidx64() 
    // Custom, undocumented privilege check
    if (!IsUserAnAdmin()) // deprecated, by the way
        throw "require administrator privileges";

Good (Microsoft standard):

bool IsElevated() 
    HANDLE hToken;
    TOKEN_ELEVATION elevation;
    DWORD size;
    if (!OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY, &hToken))
        return false;
    if (!GetTokenInformation(hToken, TokenElevation, &elevation, sizeof(elevation), &size)) 
        CloseHandle(hToken);
        return false;
CloseHandle(hToken);
    return elevation.TokenIsElevated != 0;

Then embed this in a proper manifest.

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The 64-bit tool getuidx64 is used to verify if a user session has successfully elevated to Administrator or SYSTEM-level privileges. While it does not inherently require administrative rights to run, it is frequently used in security contexts where high-level permissions are needed for actions like credential dumping. Pov — HTB Writeups. Windows-Medium | by Alts Rarely, getuidx64 might be part of a driver