rule win_ironwind_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.ironwind."
        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.ironwind"
        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 = { 0f8703230000 4c8d05bfe4ffff 4898 410fb68400a43f0000 418b8c80583e0000 4903c8 ffe1 }
            // n = 7, score = 100
            //   0f8703230000         | jne                 0xded
            //   4c8d05bfe4ffff       | dec                 esp
            //   4898                 | mov                 ecx, dword ptr [edx + 0x90]
            //   410fb68400a43f0000     | dec    ebp
            //   418b8c80583e0000     | test                ecx, ecx
            //   4903c8               | je                  0xded
            //   ffe1                 | mov                 ecx, dword ptr [eax + 0x50]

        $sequence_1 = { 48894c2420 4c8bc2 488bcd 488b90a8010000 e8???????? 448bf0 85c0 }
            // n = 7, score = 100
            //   48894c2420           | dec                 esp
            //   4c8bc2               | cmp                 dword ptr [ebp - 0x69], edi
            //   488bcd               | je                  0x810
            //   488b90a8010000       | dec                 eax
            //   e8????????           |                     
            //   448bf0               | lea                 edx, [ebp - 0x78]
            //   85c0                 | dec                 eax

        $sequence_2 = { 4c8b07 488d15af8e0200 488bcb e8???????? c7830813000005000000 e9???????? 396f08 }
            // n = 7, score = 100
            //   4c8b07               | mov                 eax, dword ptr [esi + 0x18]
            //   488d15af8e0200       | dec                 eax
            //   488bcb               | lea                 ebx, [0xfffca4c2]
            //   e8????????           |                     
            //   c7830813000005000000     | inc    ecx
            //   e9????????           |                     
            //   396f08               | mov                 edi, ebp

        $sequence_3 = { 4889442468 4883b9d012000000 488bea 488bf1 7513 488b4118 33db }
            // n = 7, score = 100
            //   4889442468           | mov                 ecx, dword ptr [edi]
            //   4883b9d012000000     | dec                 eax
            //   488bea               | test                ecx, ecx
            //   488bf1               | je                  0x6b5
            //   7513                 | inc                 eax
            //   488b4118             | cmp                 byte ptr [ebx + 0xa81], bh
            //   33db                 | je                  0x6b5

        $sequence_4 = { 488d0513370200 48898424a0000000 4c8bff 4885ff 7503 4c8bfa 4885c9 }
            // n = 7, score = 100
            //   488d0513370200       | mov                 dword ptr [eax + 0x658], esi
            //   48898424a0000000     | inc                 esp
            //   4c8bff               | mov                 dword ptr [eax + 0x5d0], esi
            //   4885ff               | mov                 dword ptr [eax + 0x5d4], 3
            //   7503                 | jmp                 0x6b1
            //   4c8bfa               | dec                 eax
            //   4885c9               | lea                 edx, [0x2657c]

        $sequence_5 = { bb43000000 e9???????? 418bde 4183fa2b 0f8441010000 458bc2 488d1597e70200 }
            // n = 7, score = 100
            //   bb43000000           | dec                 ecx
            //   e9????????           |                     
            //   418bde               | mov                 ecx, edi
            //   4183fa2b             | dec                 eax
            //   0f8441010000         | mov                 ecx, edi
            //   458bc2               | mov                 dword ptr [esp + 0x70], eax
            //   488d1597e70200       | inc                 esp

        $sequence_6 = { 498bf0 488bfa 8bd9 ff15???????? 8be8 ff15???????? 448b30 }
            // n = 7, score = 100
            //   498bf0               | dec                 eax
            //   488bfa               | lea                 eax, [esp + 0x88]
            //   8bd9                 | dec                 esp
            //   ff15????????         |                     
            //   8be8                 | mov                 eax, ebp
            //   ff15????????         |                     
            //   448b30               | dec                 esp

        $sequence_7 = { 85c0 7513 448d4002 488bcd 488d15ebaf0300 e8???????? 4883c602 }
            // n = 7, score = 100
            //   85c0                 | dec                 eax
            //   7513                 | test                ecx, ecx
            //   448d4002             | je                  0x5f7
            //   488bcd               | dec                 eax
            //   488d15ebaf0300       | test                ebp, ebp
            //   e8????????           |                     
            //   4883c602             | jne                 0x5f7

        $sequence_8 = { 4d8b4910 488d05d3f10200 84c9 742b 4d85c9 7406 41803900 }
            // n = 7, score = 100
            //   4d8b4910             | mov                 dword ptr [esp + 0x20], ecx
            //   488d05d3f10200       | dec                 eax
            //   84c9                 | mov                 ecx, ebx
            //   742b                 | dec                 eax
            //   4d85c9               | mov                 ecx, dword ptr [esp + 0x88]
            //   7406                 | dec                 eax
            //   41803900             | mov                 ecx, dword ptr [ebx + 0x12d0]

        $sequence_9 = { 48897c2438 418bfe 66660f1f840000000000 488b8b30140000 488b0c39 e8???????? 488b8330140000 }
            // n = 7, score = 100
            //   48897c2438           | jne                 0x10de
            //   418bfe               | dec                 eax
            //   66660f1f840000000000     | test    ebp, ebp
            //   488b8b30140000       | je                  0x1373
            //   488b0c39             | movzx               eax, byte ptr [ecx]
            //   e8????????           |                     
            //   488b8330140000       | inc                 ecx

    condition:
        7 of them and filesize < 995328
}