Windows_VulnDriver_Elby_1aeb3f45

rule Windows_VulnDriver_Elby_1aeb3f45 {
    meta:
        author = "Elastic Security"
        id = "1aeb3f45-500b-48de-a9e1-481ab8452e5d"
        fingerprint = "0d5a53a71f350b0a74ca8edca15f16bc1bf3e0e32d0b2ae08f088717da2a28b6"
        creation_date = "2026-05-22"
        last_modified = "2026-07-13"
        description = "Name: ElbyCDIO.sys, Version: <= 3.0.0.0"
        threat_name = "Windows.VulnDriver.Elby"
        reference_sample = "07af8c5659ad293214364789df270c0e6d03d90f4f4495da76abc2d534c64d88"
        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 45 00 6C 00 62 00 79 00 43 00 44 00 49 00 4F 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-\x02][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x00-\x00][\x00-\x00][\x03-\x03][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00])/
        $str1 = "CDRTools" wide
        $str2 = "ElbyCD Windows NT/2000 I/O driver" wide
    condition:
        int16(uint32(0x3C) + 0x5c) == 0x0001 and $original_file_name and $version and $str1 and $str2
}