Windows_VulnDriver_Huawei_66909102

rule Windows_VulnDriver_Huawei_66909102 {
    meta:
        author = "Elastic Security"
        id = "66909102-cedf-49ab-b791-679aee3a95f1"
        fingerprint = "cf80290ab403ea8862d8a18d4834f29144706ebec96147529abe0c37905c08fa"
        creation_date = "2026-07-26"
        last_modified = "2026-08-11"
        description = "Name: HWAuidoOs2Ec.sys, Version: <= 1.0.0.1"
        threat_name = "Windows.VulnDriver.Huawei"
        reference_sample = "9122b0b4a1b76550020848c692a34715fed50bc2bd6395904bd31f92638f213e"
        severity = 50
        arch_context = "x86"
        scan_context = "file"
        license = "Elastic License v2"
        os = "windows"
    strings:
        $original_file_name = { 4F 00 72 00 69 00 67 00 69 00 6E 00 61 00 6C 00 46 00 69 00 6C 00 65 00 6E 00 61 00 6D 00 65 00 00 00 48 00 57 00 41 00 75 00 69 00 64 00 6F 00 4F 00 73 00 32 00 45 00 63 00 2E 00 73 00 79 00 73 00 00 00 }
        $version = /V\x00S\x00_\x00V\x00E\x00R\x00S\x00I\x00O\x00N\x00_\x00I\x00N\x00F\x00O\x00\x00\x00{0,4}\xbd\x04\xef\xfe[\x00-\xff]{4}([\x00-\xff][\x00-\xff][\x00-\x00][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x00-\x00][\x00-\x00][\x01-\x01][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00]|[\x00-\x00][\x00-\x00][\x01-\x01][\x00-\x00][\x01-\x01][\x00-\x00][\x00-\x00][\x00-\x00])/
        $str1 = "HWAudioOs2Ec.pdb"
        $str2 = "IOCTL_SETTING_LOGO"
        $str3 = "IOCTL_SETTING_PDB"
        $str4 = "Huawei Audio Driver" wide
        $str5 = "HWAuidoOs2Ec" wide
    condition:
        int16(uint32(0x3C) + 0x5c) == 0x0001 and int16(uint32(0x3C) + 0x18) == 0x020b and $original_file_name and $version and $str1 and $str2 and $str3 and $str4 and $str5
}