rule win_unidentified_125_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_125."
        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_125"
        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 = { 83f0fe 85d0 0f94c3 83f90a 0f9cc7 30df bb775a3e51 }
            // n = 7, score = 100
            //   83f0fe               | xor                 eax, 0xfffffffe
            //   85d0                 | test                eax, edx
            //   0f94c3               | sete                bl
            //   83f90a               | cmp                 ecx, 0xa
            //   0f9cc7               | setl                bh
            //   30df                 | xor                 bh, bl
            //   bb775a3e51           | mov                 ebx, 0x513e5a77

        $sequence_1 = { 8b45b8 8b8524ffffff c7400500000000 c7400100000000 c7400d00000000 c7400900000000 c7401500000000 }
            // n = 7, score = 100
            //   8b45b8               | mov                 eax, dword ptr [ebp - 0x48]
            //   8b8524ffffff         | mov                 eax, dword ptr [ebp - 0xdc]
            //   c7400500000000       | mov                 dword ptr [eax + 5], 0
            //   c7400100000000       | mov                 dword ptr [eax + 1], 0
            //   c7400d00000000       | mov                 dword ptr [eax + 0xd], 0
            //   c7400900000000       | mov                 dword ptr [eax + 9], 0
            //   c7401500000000       | mov                 dword ptr [eax + 0x15], 0

        $sequence_2 = { 3dd663b03d 0f84630d0000 3d57c0223d 0f8419070000 3d0ebf1d40 75bb }
            // n = 6, score = 100
            //   3dd663b03d           | cmp                 eax, 0x3db063d6
            //   0f84630d0000         | je                  0xd69
            //   3d57c0223d           | cmp                 eax, 0x3d22c057
            //   0f8419070000         | je                  0x71f
            //   3d0ebf1d40           | cmp                 eax, 0x401dbf0e
            //   75bb                 | jne                 0xffffffbd

        $sequence_3 = { a1???????? 8b15???????? be0b7c66ca e9???????? 81f93f10aec1 0f84b9140000 81f944c7bbc1 }
            // n = 7, score = 100
            //   a1????????           |                     
            //   8b15????????         |                     
            //   be0b7c66ca           | mov                 esi, 0xca667c0b
            //   e9????????           |                     
            //   81f93f10aec1         | cmp                 ecx, 0xc1ae103f
            //   0f84b9140000         | je                  0x14bf
            //   81f944c7bbc1         | cmp                 ecx, 0xc1bbc744

        $sequence_4 = { e9???????? a1???????? 8b0d???????? bf00cd2492 8d50ff 0fafd0 f7d2 }
            // n = 7, score = 100
            //   e9????????           |                     
            //   a1????????           |                     
            //   8b0d????????         |                     
            //   bf00cd2492           | mov                 edi, 0x9224cd00
            //   8d50ff               | lea                 edx, [eax - 1]
            //   0fafd0               | imul                edx, eax
            //   f7d2                 | not                 edx

        $sequence_5 = { 0f8ffff9ffff e9???????? 81f99874092d 0f84600a0000 81f96c294930 0f847b0a0000 81f9feca6633 }
            // n = 7, score = 100
            //   0f8ffff9ffff         | jg                  0xfffffa05
            //   e9????????           |                     
            //   81f99874092d         | cmp                 ecx, 0x2d097498
            //   0f84600a0000         | je                  0xa66
            //   81f96c294930         | cmp                 ecx, 0x3049296c
            //   0f847b0a0000         | je                  0xa81
            //   81f9feca6633         | cmp                 ecx, 0x3366cafe

        $sequence_6 = { 09cb 31c3 8d0433 8b75a4 895d84 c1c012 89c1 }
            // n = 7, score = 100
            //   09cb                 | or                  ebx, ecx
            //   31c3                 | xor                 ebx, eax
            //   8d0433               | lea                 eax, [ebx + esi]
            //   8b75a4               | mov                 esi, dword ptr [ebp - 0x5c]
            //   895d84               | mov                 dword ptr [ebp - 0x7c], ebx
            //   c1c012               | rol                 eax, 0x12
            //   89c1                 | mov                 ecx, eax

        $sequence_7 = { c641056e 8b8d0cffffff c6410665 8b8d0cffffff c6410774 }
            // n = 5, score = 100
            //   c641056e             | mov                 byte ptr [ecx + 5], 0x6e
            //   8b8d0cffffff         | mov                 ecx, dword ptr [ebp - 0xf4]
            //   c6410665             | mov                 byte ptr [ecx + 6], 0x65
            //   8b8d0cffffff         | mov                 ecx, dword ptr [ebp - 0xf4]
            //   c6410774             | mov                 byte ptr [ecx + 7], 0x74

        $sequence_8 = { 8b5320 894db4 89d1 81e2979f68b1 f7d1 81e16860974e 09ca }
            // n = 7, score = 100
            //   8b5320               | mov                 edx, dword ptr [ebx + 0x20]
            //   894db4               | mov                 dword ptr [ebp - 0x4c], ecx
            //   89d1                 | mov                 ecx, edx
            //   81e2979f68b1         | and                 edx, 0xb1689f97
            //   f7d1                 | not                 ecx
            //   81e16860974e         | and                 ecx, 0x4e976068
            //   09ca                 | or                  edx, ecx

        $sequence_9 = { be6f139c2a bb1cf5499c 89c2 30ca 84c0 b81cf5499c 0f45c6 }
            // n = 7, score = 100
            //   be6f139c2a           | mov                 esi, 0x2a9c136f
            //   bb1cf5499c           | mov                 ebx, 0x9c49f51c
            //   89c2                 | mov                 edx, eax
            //   30ca                 | xor                 dl, cl
            //   84c0                 | test                al, al
            //   b81cf5499c           | mov                 eax, 0x9c49f51c
            //   0f45c6               | cmovne              eax, esi

    condition:
        7 of them and filesize < 861184
}