rule win_unidentified_003_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.unidentified_003."
        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_003"
        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 = { 7512 ff15???????? 6a0a 33d2 59 }
            // n = 5, score = 100
            //   7512                 | jne                 0x14
            //   ff15????????         |                     
            //   6a0a                 | push                0xa
            //   33d2                 | xor                 edx, edx
            //   59                   | pop                 ecx

        $sequence_1 = { 83c40c 895de8 8b45ec 8b08 8d55f0 52 53 }
            // n = 7, score = 100
            //   83c40c               | add                 esp, 0xc
            //   895de8               | mov                 dword ptr [ebp - 0x18], ebx
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8d55f0               | lea                 edx, [ebp - 0x10]
            //   52                   | push                edx
            //   53                   | push                ebx

        $sequence_2 = { 6a04 59 bf???????? 33c0 f3a7 742f }
            // n = 6, score = 100
            //   6a04                 | push                4
            //   59                   | pop                 ecx
            //   bf????????           |                     
            //   33c0                 | xor                 eax, eax
            //   f3a7                 | repe cmpsd          dword ptr [esi], dword ptr es:[edi]
            //   742f                 | je                  0x31

        $sequence_3 = { 663bcb 75f1 8b45e4 5f 5e 5b }
            // n = 6, score = 100
            //   663bcb               | cmp                 cx, bx
            //   75f1                 | jne                 0xfffffff3
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx

        $sequence_4 = { 56 ff15???????? 33c9 85c0 0f99c1 56 894df8 }
            // n = 7, score = 100
            //   56                   | push                esi
            //   ff15????????         |                     
            //   33c9                 | xor                 ecx, ecx
            //   85c0                 | test                eax, eax
            //   0f99c1               | setns               cl
            //   56                   | push                esi
            //   894df8               | mov                 dword ptr [ebp - 8], ecx

        $sequence_5 = { 33f6 3975e4 7509 ff75d8 ff15???????? 837df001 747d }
            // n = 7, score = 100
            //   33f6                 | xor                 esi, esi
            //   3975e4               | cmp                 dword ptr [ebp - 0x1c], esi
            //   7509                 | jne                 0xb
            //   ff75d8               | push                dword ptr [ebp - 0x28]
            //   ff15????????         |                     
            //   837df001             | cmp                 dword ptr [ebp - 0x10], 1
            //   747d                 | je                  0x7f

        $sequence_6 = { 85c0 7521 b8???????? 85c0 7420 ff750c 53 }
            // n = 7, score = 100
            //   85c0                 | test                eax, eax
            //   7521                 | jne                 0x23
            //   b8????????           |                     
            //   85c0                 | test                eax, eax
            //   7420                 | je                  0x22
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   53                   | push                ebx

        $sequence_7 = { 8bc3 5b c21000 33c0 40 c20400 55 }
            // n = 7, score = 100
            //   8bc3                 | mov                 eax, ebx
            //   5b                   | pop                 ebx
            //   c21000               | ret                 0x10
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax
            //   c20400               | ret                 4
            //   55                   | push                ebp

        $sequence_8 = { 7e63 8b06 6a01 57 ff7508 03c8 }
            // n = 6, score = 100
            //   7e63                 | jle                 0x65
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   6a01                 | push                1
            //   57                   | push                edi
            //   ff7508               | push                dword ptr [ebp + 8]
            //   03c8                 | add                 ecx, eax

        $sequence_9 = { 83c002 663bcb 75f1 c745e402000000 }
            // n = 4, score = 100
            //   83c002               | add                 eax, 2
            //   663bcb               | cmp                 cx, bx
            //   75f1                 | jne                 0xfffffff3
            //   c745e402000000       | mov                 dword ptr [ebp - 0x1c], 2

    condition:
        7 of them and filesize < 57344
}