Windows_VulnDriver_CorMem_ae5dc1d7

rule Windows_VulnDriver_CorMem_ae5dc1d7 {
    meta:
        author = "Elastic Security"
        id = "ae5dc1d7-c666-4cac-8b66-14332957b4e8"
        fingerprint = "9d42f839b77164e388f4c0bb2a94d672de76bbc8d1a9e1db92d99b3df7949870"
        creation_date = "2026-07-26"
        last_modified = "2026-08-11"
        description = "Name: CorMem.sys, Version: <= 9.0.0.0"
        threat_name = "Windows.VulnDriver.CorMem"
        reference_sample = "4e509978976a98c8e92aee4a0e73059ea03a133526fe818156c9e04ede498a81"
        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 43 00 6F 00 72 00 4D 00 65 00 6D 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-\x08][\x00-\x00][\x00-\xff][\x00-\xff][\x00-\xff][\x00-\xff]|[\x00-\x00][\x00-\x00][\x09-\x09][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00][\x00-\x00])/
        $str1 = "Cormem.pdb"
        $str2 = "Sapera LT" wide
        $str3 = "Sapera Memory Manager" wide
    condition:
        int16(uint32(0x3C) + 0x5c) == 0x0001 and int16(uint32(0x3C) + 0x18) == 0x020b and $original_file_name and $version and $str1 and $str2 and $str3
}