Windows_VulnDriver_Getac_c04f00fd

rule Windows_VulnDriver_Getac_c04f00fd {
    meta:
        author = "Elastic Security"
        id = "c04f00fd-1f5e-46c0-a87c-9c7faed32c2c"
        fingerprint = "1966d2db438b60e5913e6cf0b556006e483e939260820cf9fa60825cb0d1d0bb"
        creation_date = "2026-07-26"
        last_modified = "2026-08-11"
        description = "Name: GtcKmdfBs.sys, Version: <= 21.2.0.3"
        threat_name = "Windows.VulnDriver.Getac"
        reference_sample = "69d7c403bd98af0df758efd1b05b8aa230c742043affdfd25a6f63a34e3652aa"
        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 47 00 74 00 63 00 4B 00 6D 00 64 00 66 00 42 00 73 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-\x14][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x00-\x01][\x00-\x00][\x15-\x15][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x02-\x02][\x00-\x00][\x15-\x15][\x00-\x00][\x00-\x02][\x00-\x00][\x00-\x00][\x00-\x00]|[\x02-\x02][\x00-\x00][\x15-\x15][\x00-\x00][\x03-\x03][\x00-\x00][\x00-\x00][\x00-\x00])/
        $str1 = "GtcKmdfBs.pdb"
        $str2 = "Getac System Service Provider" wide
    condition:
        int16(uint32(0x3C) + 0x5c) == 0x0001 and int16(uint32(0x3C) + 0x18) == 0x020b and $original_file_name and $version and $str1 and $str2
}