Windows_VulnDriver_RtCore_1b4e556a

rule Windows_VulnDriver_RtCore_1b4e556a {
    meta:
        author = "Elastic Security"
        id = "1b4e556a-2361-4ac1-a0f8-71356bfb269a"
        fingerprint = "b672813f9befb239b6a77f9f5cf3dba7b517dfd1e99b018d5591f4648cef7567"
        creation_date = "2026-05-22"
        last_modified = "2026-07-29"
        description = "Subject: MICRO-STAR INTERNATIONAL CO., LTD., Version: <= 1.0.0.2"
        threat_name = "Windows.VulnDriver.RtCore"
        reference_sample = "09bedbf7a41e0f8dabe4f41d331db58373ce15b2e9204540873a1884f38bdde1"
        severity = 50
        arch_context = "x86"
        scan_context = "file"
        license = "Elastic License v2"
        os = "windows"
    strings:
        $subject_name = { 06 03 55 04 03 [2] 4D 49 43 52 4F 2D 53 54 41 52 20 49 4E 54 45 52 4E 41 54 49 4F 4E 41 4C 20 43 4F 2E 2C 20 4C 54 44 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 4E 00 54 00 49 00 4F 00 4C 00 69 00 62 00 5F 00 58 00 36 00 34 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-\x01][\x00-\x00][\x00-\x00][\x00-\x00]|[\x00-\x00][\x00-\x00][\x01-\x01][\x00-\x00][\x02-\x02][\x00-\x00][\x00-\x00][\x00-\x00])/
        $str1 = "NTIOLib.pdb"
    condition:
        int16(uint32(0x3C) + 0x5c) == 0x0001 and int16(uint32(0x3C) + 0x18) == 0x020b and $subject_name and $original_file_name and $version and $str1
}