rule win_unidentified_106_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_106."
        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_106"
        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 = { 6641c1e44b 48816c24283d725d48 f75c2420 66c16c2428ff 4c8b642440 48f7442420be24bb05 0f94442420 }
            // n = 7, score = 100
            //   6641c1e44b           | dec                 ecx
            //   48816c24283d725d48     | mov    eax, 0x132c5a95
            //   f75c2420             | push                cs
            //   66c16c2428ff         | aaa                 
            //   4c8b642440           | sbb                 cl, byte ptr [edx]
            //   48f7442420be24bb05     | dec    ecx
            //   0f94442420           | mov                 eax, 0x77d31c25

        $sequence_1 = { e8???????? 488b4550 0f1f00 49ffc6 42807c300800 75f5 44897004 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b4550             | dec                 eax
            //   0f1f00               | mov                 ebp, dword ptr [esp + 0x50]
            //   49ffc6               | dec                 eax
            //   42807c300800         | mov                 edi, dword ptr [esp + 0x58]
            //   75f5                 | dec                 eax
            //   44897004             | add                 esp, 0x20

        $sequence_2 = { e8???????? 66450fb6c9 4c8b4c2438 66814424400746 0f8037d2ecff 66814c2440100f 66f7542440 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   66450fb6c9           | jb                  0x169
            //   4c8b4c2438           | test                al, 0x40
            //   66814424400746       | je                  0x169
            //   0f8037d2ecff         | inc                 ebp
            //   66814c2440100f       | xor                 eax, eax
            //   66f7542440           | mov                 byte ptr [ebx + 0x44d], 9

        $sequence_3 = { e8???????? 4d85e4 0f84890a0000 33c0 4d8bc4 8bc8 448bd8 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   4d85e4               | add                 ecx, -1
            //   0f84890a0000         | jne                 0x199
            //   33c0                 | dec                 eax
            //   4d8bc4               | mov                 ecx, dword ptr [edi + 0x138]
            //   8bc8                 | inc                 ecx
            //   448bd8               | mov                 eax, 1

        $sequence_4 = { e8???????? 4887742430 488b542428 e8???????? 664181c3d456 48895c2420 41c0eb5d }
            // n = 7, score = 100
            //   e8????????           |                     
            //   4887742430           | mov                 ecx, ebx
            //   488b542428           | call                dword ptr [ebx + 0xc0]
            //   e8????????           |                     
            //   664181c3d456         | test                eax, eax
            //   48895c2420           | jne                 0x1f1f
            //   41c0eb5d             | mov                 esi, 0x300

        $sequence_5 = { c1ea1f 4983e901 75df 453bd3 7d26 4c2bc1 458bcb }
            // n = 7, score = 100
            //   c1ea1f               | test                esi, esi
            //   4983e901             | js                  0xd8e
            //   75df                 | lea                 edi, [edx + ebp]
            //   453bd3               | sar                 edi, 4
            //   7d26                 | mov                 eax, edi
            //   4c2bc1               | shr                 eax, 0x1f
            //   458bcb               | add                 edi, eax

        $sequence_6 = { e8???????? 54 fb 4cb9728e1746b9f1c5ab bb462a34b7 45b9bf9243bb 4697 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   54                   | neg                 dword ptr [esp + 0x88]
            //   fb                   | mov                 byte ptr [esp + 0x20], 0x6b
            //   4cb9728e1746b9f1c5ab     | dec    eax
            //   bb462a34b7           | mov                 ebx, 0x5d120d78
            //   45b9bf9243bb         | inc                 eax
            //   4697                 | cmp                 eax, 0x5487484e

        $sequence_7 = { e8???????? 8bd8 85c0 7547 8d04f500000000 3bc7 7614 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8bd8                 | mov                 dword ptr [ebp + 0xb], 0x76f7cfa7
            //   85c0                 | mov                 dword ptr [ebp + 0xf], 0xddd9dbbf
            //   7547                 | mov                 dword ptr [ebp - 1], 0xbebcddf1
            //   8d04f500000000       | mov                 dword ptr [ebp + 3], 0xe2fa7ddb
            //   3bc7                 | mov                 dword ptr [ebp + 7], 0xfdf3fee9
            //   7614                 | mov                 dword ptr [ebp + 0xb], 0x76f7cfa7

        $sequence_8 = { e8???????? 488b4c2448 482b442458 8b4964 83c105 6bd13c 483bc2 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b4c2448           | dec                 esi
            //   482b442458           | lea                 ebx, [ecx + ebx*8 + 0x3808611f]
            //   8b4964               | dec                 eax
            //   83c105               | lea                 edi, [edi + ecx*2 - 0x418f9270]
            //   6bd13c               | inc                 ecx
            //   483bc2               | mov                 ebx, 0x54374288

        $sequence_9 = { ff5170 bad1070000 488bcb ff5370 bad2070000 488bcb ff5370 }
            // n = 7, score = 100
            //   ff5170               | jne                 0x1e6f
            //   bad1070000           | mov                 eax, dword ptr [esp + 0x68]
            //   488bcb               | dec                 esp
            //   ff5370               | mov                 dword ptr [esp + 0x60], esp
            //   bad2070000           | inc                 esp
            //   488bcb               | mov                 esp, dword ptr [ebx + 0x20]
            //   ff5370               | mov                 edi, eax

    condition:
        7 of them and filesize < 27402240
}