rule win_unidentified_115_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_115."
        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.unidentified_115"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { e8???????? 4c8d0dbe580100 4c8d05c4580100 4c89e1 48c744242090000000 488d1599580100 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   4c8d0dbe580100       | dec                 eax
            //   4c8d05c4580100       | lea                 ecx, [0x17d03]
            //   4c89e1               | dec                 eax
            //   48c744242090000000     | add    edx, ebx
            //   488d1599580100       | dec                 eax
            //   e8????????           |                     

        $sequence_1 = { 4889c1 8a442b10 884110 8a443b10 884111 e8???????? 4c89e1 }
            // n = 7, score = 100
            //   4889c1               | dec                 eax
            //   8a442b10             | mov                 esi, dword ptr [esp + 0x1d0]
            //   884110               | je                  0x7b3
            //   8a443b10             | dec                 esp
            //   884111               | mov                 ecx, esi
            //   e8????????           |                     
            //   4c89e1               | jmp                 0x7ae

        $sequence_2 = { 4989c1 e8???????? 428a542310 498b01 4c89c9 4188540110 488d1520440100 }
            // n = 7, score = 100
            //   4989c1               | dec                 eax
            //   e8????????           |                     
            //   428a542310           | mov                 dword ptr [ebx + 8], 0
            //   498b01               | dec                 eax
            //   4c89c9               | mov                 edx, eax
            //   4188540110           | dec                 eax
            //   488d1520440100       | mov                 ecx, ebx

        $sequence_3 = { 4080fe05 7716 4589d3 448d50a9 41c1e304 4509da 41b301 }
            // n = 7, score = 100
            //   4080fe05             | mov                 dword ptr [esp + 0x10], eax
            //   7716                 | dec                 ecx
            //   4589d3               | mov                 dword ptr [esp + 0x18], eax
            //   448d50a9             | dec                 eax
            //   41c1e304             | test                ebx, ebx
            //   4509da               | dec                 ecx
            //   41b301               | mov                 dword ptr [esp], eax

        $sequence_4 = { 21fd 4431e5 4189d4 01f5 4489ce 4121fc 01e8 }
            // n = 7, score = 100
            //   21fd                 | dec                 eax
            //   4431e5               | mov                 dword ptr [esp + 0x20], 0x99
            //   4189d4               | dec                 eax
            //   01f5                 | lea                 edx, [0x2265f]
            //   4489ce               | nop                 
            //   4121fc               | inc                 ecx
            //   01e8                 | push                esp

        $sequence_5 = { 66c705????????1503 c605????????01 48c705????????00000000 48c705????????08000000 48c705????????08000000 66c705????????1503 488935???????? }
            // n = 7, score = 100
            //   66c705????????1503     |     
            //   c605????????01       |                     
            //   48c705????????00000000     |     
            //   48c705????????08000000     |     
            //   48c705????????08000000     |     
            //   66c705????????1503     |     
            //   488935????????       |                     

        $sequence_6 = { 4c890d???????? 4c8d0dc2a20100 4c8935???????? 4c8b35???????? 4c890d???????? 4c8d0d60810200 }
            // n = 6, score = 100
            //   4c890d????????       |                     
            //   4c8d0dc2a20100       | inc                 esp
            //   4c8935????????       |                     
            //   4c8b35????????       |                     
            //   4c890d????????       |                     
            //   4c8d0d60810200       | xor                 ebx, eax

        $sequence_7 = { 48c705????????00000000 48c705????????01000000 48c705????????01000000 66c705????????0103 48c705????????30000000 48c705????????08000000 c605????????11 }
            // n = 7, score = 100
            //   48c705????????00000000     |     
            //   48c705????????01000000     |     
            //   48c705????????01000000     |     
            //   66c705????????0103     |     
            //   48c705????????30000000     |     
            //   48c705????????08000000     |     
            //   c605????????11       |                     

        $sequence_8 = { 42ff84ac80000000 eb42 0fb7c9 450fb6f7 4489fe e8???????? 89e9 }
            // n = 7, score = 100
            //   42ff84ac80000000     | mov                 esp, eax
            //   eb42                 | mov                 al, byte ptr [esp + 0x50]
            //   0fb7c9               | dec                 esp
            //   450fb6f7             | mov                 ecx, edx
            //   4489fe               | mov                 al, byte ptr [esp + 0x50]
            //   e8????????           |                     
            //   89e9                 | mov                 edx, 0xa

        $sequence_9 = { 4d8b7d18 49894500 488d0527760100 49894510 e8???????? 49894518 4d85ff }
            // n = 7, score = 100
            //   4d8b7d18             | xor                 edi, ebp
            //   49894500             | inc                 esp
            //   488d0527760100       | mov                 ebp, eax
            //   49894510             | rol                 ebp, 0xa
            //   e8????????           |                     
            //   49894518             | xor                 edi, ebp
            //   4d85ff               | inc                 esp

    condition:
        7 of them and filesize < 648192
}