Windows_VulnDriver_ProcExp_84ab26d0

rule Windows_VulnDriver_ProcExp_84ab26d0 {
    meta:
        author = "Elastic Security"
        id = "84ab26d0-5ac6-4ec7-a4b8-aa36c0a9cd13"
        fingerprint = "3bf107b1fd285598218b139516598a16b04d55e4b4c11baa5873975c6eef8384"
        creation_date = "2026-05-22"
        last_modified = "2026-07-29"
        description = "Subject: Mark Russinovich, Version: <= 15.0.0.0"
        threat_name = "Windows.VulnDriver.ProcExp"
        reference_sample = "9d5ebd0f4585ec20a5fe3c5276df13ece5a2645d3d6f70cedcda979bd1248fc2"
        severity = 50
        arch_context = "x86"
        scan_context = "file"
        license = "Elastic License v2"
        os = "windows"
    strings:
        $subject_name = { 06 03 55 04 03 [2] 4D 61 72 6B 20 52 75 73 73 69 6E 6F 76 69 63 68 }
        $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 70 00 72 00 6F 00 63 00 65 00 78 00 70 00 2E 00 53 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-\x0e][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x00-\x00][\x00-\x00][\x0f-\x0f][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00])/
        $str1 = "ProcExpDriver.pdb"
        $str2 = "Process Explorer" wide
    condition:
        int16(uint32(0x3C) + 0x5c) == 0x0001 and $subject_name and $original_file_name and $version and $str1 and $str2
}