rule win_ktlv_door_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.ktlv_door."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ktlv_door"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { ffd0 488b5c2440 488b442430 488b4c2448 488b6c2458 4883c460 c3 }
            // n = 7, score = 100
            //   ffd0                 | dec                 esp
            //   488b5c2440           | mov                 ecx, dword ptr [esp + 0xd0]
            //   488b442430           | dec                 esp
            //   488b4c2448           | mov                 edx, dword ptr [esp + 0x138]
            //   488b6c2458           | dec                 esp
            //   4883c460             | mov                 ebx, dword ptr [esp + 0xb8]
            //   c3                   | dec                 esp

        $sequence_1 = { 4c8d4301 4901c9 4983f804 0f8ca1feffff 4c89d3 4889d9 488bbc24d8000000 }
            // n = 7, score = 100
            //   4c8d4301             | lea                 eax, [0x18d1c0]
            //   4901c9               | dec                 eax
            //   4983f804             | mov                 dword ptr [eax + 8], 0x3e
            //   0f8ca1feffff         | dec                 eax
            //   4c89d3               | lea                 ecx, [0x1ec419]
            //   4889d9               | dec                 eax
            //   488bbc24d8000000     | mov                 dword ptr [eax], ecx

        $sequence_2 = { eb6a 488d942460010000 4889942460010000 488b8c2470010000 488d7101 488b9c2468010000 488bbc2478010000 }
            // n = 7, score = 100
            //   eb6a                 | dec                 esp
            //   488d942460010000     | mov                 edx, dword ptr [esp + 0x258]
            //   4889942460010000     | dec                 ebp
            //   488b8c2470010000     | adc                 eax, edx
            //   488d7101             | dec                 ebp
            //   488b9c2468010000     | sbb                 eax, eax
            //   488bbc2478010000     | dec                 esp

        $sequence_3 = { c3 4889c1 90 e8???????? 90 4889442408 48895c2410 }
            // n = 7, score = 100
            //   c3                   | dec                 eax
            //   4889c1               | mov                 edx, 0x30383965
            //   90                   | xor                 byte ptr [ecx], bh
            //   e8????????           |                     
            //   90                   | cmp                 dword ptr [eax], edi
            //   4889442408           | dec                 eax
            //   48895c2410           | mov                 dword ptr [esp + 0x30], edx

        $sequence_4 = { 90 e8???????? 48c7400825000000 488d0dbd902a00 488908 488b8c24d0000000 488b9424d8000000 }
            // n = 7, score = 100
            //   90                   | lea                 esi, [esp + 0x34]
            //   e8????????           |                     
            //   48c7400825000000     | inc                 eax
            //   488d0dbd902a00       | test                bh, bh
            //   488908               | jne                 0x1807
            //   488b8c24d0000000     | dec                 eax
            //   488b9424d8000000     | lea                 eax, [0x3c7194]

        $sequence_5 = { e8???????? 488d0574451000 488b9c24e8010000 488b8c24e0010000 488bbc2408010000 e8???????? 48c7400801000000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488d0574451000       | dec                 eax
            //   488b9c24e8010000     | sub                 esi, eax
            //   488b8c24e0010000     | dec                 ecx
            //   488bbc2408010000     | mov                 edx, esi
            //   e8????????           |                     
            //   48c7400801000000     | dec                 eax

        $sequence_6 = { c3 81f9ce80d5ec 7510 488d0dc75e3000 4839c8 7436 6690 }
            // n = 7, score = 100
            //   c3                   | lea                 ecx, [0x19b230]
            //   81f9ce80d5ec         | dec                 eax
            //   7510                 | mov                 dword ptr [eax], ecx
            //   488d0dc75e3000       | nop                 
            //   4839c8               | jne                 0x9f9
            //   7436                 | dec                 eax
            //   6690                 | mov                 dword ptr [eax + 8], 0x14

        $sequence_7 = { 4c89ac2440010000 4c89e7 4c89f9 e8???????? 488d05814b1b00 4c89eb e8???????? }
            // n = 7, score = 100
            //   4c89ac2440010000     | mov                 ebx, dword ptr [esp + 0x68]
            //   4c89e7               | dec                 eax
            //   4c89f9               | lea                 eax, [0x2f7e24]
            //   e8????????           |                     
            //   488d05814b1b00       | nop                 dword ptr [eax]
            //   4c89eb               | movzx               ecx, byte ptr [esp + 0x44]
            //   e8????????           |                     

        $sequence_8 = { e8???????? 48c7400819000000 488d0d0d502f00 488908 31db 31c9 488d3d8d8e3900 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   48c7400819000000     | inc                 esp
            //   488d0d0d502f00       | movups              xmmword ptr [esp + 0x40], xmm7
            //   488908               | dec                 esp
            //   31db                 | mov                 dword ptr [esp + 0x28], eax
            //   31c9                 | dec                 eax
            //   488d3d8d8e3900       | mov                 dword ptr [esp + 0x18], esi

        $sequence_9 = { e8???????? 488b842488000000 0fb610 488b4c2458 4889cb 48c1e103 4c8b9c24c0000000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b842488000000     | add                 byte ptr [ecx - 0x7d], cl
            //   0fb610               | mov                 eax, 0xf0
            //   488b4c2458           | add                 byte ptr [edi], cl
            //   4889cb               | test                byte ptr [edx - 0x6fffffff], dh
            //   48c1e103             | mov                 word ptr [esp + 0x44], 0
            //   4c8b9c24c0000000     | mov                 byte ptr [esp + 0x45], 0xd

    condition:
        7 of them and filesize < 14630912
}