Windows_VulnDriver_WinIo_2d07d23d

rule Windows_VulnDriver_WinIo_2d07d23d {
    meta:
        author = "Elastic Security"
        id = "2d07d23d-d913-4a47-90c5-169042f1833b"
        fingerprint = "1f38283f4414437f005db4c77239428065ee2690054183d998410412cec9f508"
        creation_date = "2026-05-22"
        last_modified = "2026-07-29"
        description = "Subject: First International Computer, Inc., Version: <= 2.5.0.0"
        threat_name = "Windows.VulnDriver.WinIo"
        reference_sample = "8d5466ccce64de5beccc373e0c878ca3e624ed78d359f76aae32de4df5afce18"
        severity = 50
        arch_context = "x86"
        scan_context = "file"
        license = "Elastic License v2"
        os = "windows"
    strings:
        $subject_name = { 06 03 55 04 03 [2] 46 69 72 73 74 20 49 6E 74 65 72 6E 61 74 69 6F 6E 61 6C 20 43 6F 6D 70 75 74 65 72 2C 20 49 6E 63 2E }
        $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 57 00 69 00 6E 00 49 00 6F 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-\x01][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x00-\x04][\x00-\x00][\x02-\x02][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x05-\x05][\x00-\x00][\x02-\x02][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00])/
        $str1 = "WinIo.pdb"
    condition:
        int16(uint32(0x3C) + 0x5c) == 0x0001 and $subject_name and $original_file_name and $version and $str1
}