rule win_mindware_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.mindware."
        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.mindware"
        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 = { 8bcb c1e910 0fb6c9 c1e608 0fb689f0d84400 33f1 }
            // n = 6, score = 100
            //   8bcb                 | mov                 ecx, ebx
            //   c1e910               | shr                 ecx, 0x10
            //   0fb6c9               | movzx               ecx, cl
            //   c1e608               | shl                 esi, 8
            //   0fb689f0d84400       | movzx               ecx, byte ptr [ecx + 0x44d8f0]
            //   33f1                 | xor                 esi, ecx

        $sequence_1 = { 8b4df8 c1e908 0fb6c9 8b1495c0c04400 8b75f4 33148dc0bc4400 8bce }
            // n = 7, score = 100
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   c1e908               | shr                 ecx, 8
            //   0fb6c9               | movzx               ecx, cl
            //   8b1495c0c04400       | mov                 edx, dword ptr [edx*4 + 0x44c0c0]
            //   8b75f4               | mov                 esi, dword ptr [ebp - 0xc]
            //   33148dc0bc4400       | xor                 edx, dword ptr [ecx*4 + 0x44bcc0]
            //   8bce                 | mov                 ecx, esi

        $sequence_2 = { 3945f8 741f 8b34bdd4214400 47 85f6 7fb9 5f }
            // n = 7, score = 100
            //   3945f8               | cmp                 dword ptr [ebp - 8], eax
            //   741f                 | je                  0x21
            //   8b34bdd4214400       | mov                 esi, dword ptr [edi*4 + 0x4421d4]
            //   47                   | inc                 edi
            //   85f6                 | test                esi, esi
            //   7fb9                 | jg                  0xffffffbb
            //   5f                   | pop                 edi

        $sequence_3 = { 0bd9 8945f4 b130 8b04d520414400 8b14d524414400 e8???????? 8b4df0 }
            // n = 7, score = 100
            //   0bd9                 | or                  ebx, ecx
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   b130                 | mov                 cl, 0x30
            //   8b04d520414400       | mov                 eax, dword ptr [edx*8 + 0x444120]
            //   8b14d524414400       | mov                 edx, dword ptr [edx*8 + 0x444124]
            //   e8????????           |                     
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]

        $sequence_4 = { 2b55e4 8b45d4 1bc1 8955d0 8945d4 8b4de4 33d2 }
            // n = 7, score = 100
            //   2b55e4               | sub                 edx, dword ptr [ebp - 0x1c]
            //   8b45d4               | mov                 eax, dword ptr [ebp - 0x2c]
            //   1bc1                 | sbb                 eax, ecx
            //   8955d0               | mov                 dword ptr [ebp - 0x30], edx
            //   8945d4               | mov                 dword ptr [ebp - 0x2c], eax
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   33d2                 | xor                 edx, edx

        $sequence_5 = { c78588f0ffff2cdf4300 c7858cf0ffff3cdf4300 c78590f0ffff44df4300 c78594f0ffff4cdf4300 }
            // n = 4, score = 100
            //   c78588f0ffff2cdf4300     | mov    dword ptr [ebp - 0xf78], 0x43df2c
            //   c7858cf0ffff3cdf4300     | mov    dword ptr [ebp - 0xf74], 0x43df3c
            //   c78590f0ffff44df4300     | mov    dword ptr [ebp - 0xf70], 0x43df44
            //   c78594f0ffff4cdf4300     | mov    dword ptr [ebp - 0xf6c], 0x43df4c

        $sequence_6 = { 83e1f0 83f910 7309 c745e810000000 eb0f 8b55f8 8b4204 }
            // n = 7, score = 100
            //   83e1f0               | and                 ecx, 0xfffffff0
            //   83f910               | cmp                 ecx, 0x10
            //   7309                 | jae                 0xb
            //   c745e810000000       | mov                 dword ptr [ebp - 0x18], 0x10
            //   eb0f                 | jmp                 0x11
            //   8b55f8               | mov                 edx, dword ptr [ebp - 8]
            //   8b4204               | mov                 eax, dword ptr [edx + 4]

        $sequence_7 = { c785ccf1ffff40e24300 c785d0f1ffff50e24300 c785d4f1ffff60e24300 c785d8f1ffff68e24300 c785dcf1ffff70e24300 c785e0f1ffff7ce24300 c785e4f1ffff8ce24300 }
            // n = 7, score = 100
            //   c785ccf1ffff40e24300     | mov    dword ptr [ebp - 0xe34], 0x43e240
            //   c785d0f1ffff50e24300     | mov    dword ptr [ebp - 0xe30], 0x43e250
            //   c785d4f1ffff60e24300     | mov    dword ptr [ebp - 0xe2c], 0x43e260
            //   c785d8f1ffff68e24300     | mov    dword ptr [ebp - 0xe28], 0x43e268
            //   c785dcf1ffff70e24300     | mov    dword ptr [ebp - 0xe24], 0x43e270
            //   c785e0f1ffff7ce24300     | mov    dword ptr [ebp - 0xe20], 0x43e27c
            //   c785e4f1ffff8ce24300     | mov    dword ptr [ebp - 0xe1c], 0x43e28c

        $sequence_8 = { 884103 0fb64104 d1e8 0fb68060364400 884104 }
            // n = 5, score = 100
            //   884103               | mov                 byte ptr [ecx + 3], al
            //   0fb64104             | movzx               eax, byte ptr [ecx + 4]
            //   d1e8                 | shr                 eax, 1
            //   0fb68060364400       | movzx               eax, byte ptr [eax + 0x443660]
            //   884104               | mov                 byte ptr [ecx + 4], al

        $sequence_9 = { c78550f3ffff38e64300 c78554f3ffff40e64300 c78558f3ffff48e64300 c7855cf3ffff50e64300 c78560f3ffff58e64300 c78564f3ffff60e64300 }
            // n = 6, score = 100
            //   c78550f3ffff38e64300     | mov    dword ptr [ebp - 0xcb0], 0x43e638
            //   c78554f3ffff40e64300     | mov    dword ptr [ebp - 0xcac], 0x43e640
            //   c78558f3ffff48e64300     | mov    dword ptr [ebp - 0xca8], 0x43e648
            //   c7855cf3ffff50e64300     | mov    dword ptr [ebp - 0xca4], 0x43e650
            //   c78560f3ffff58e64300     | mov    dword ptr [ebp - 0xca0], 0x43e658
            //   c78564f3ffff60e64300     | mov    dword ptr [ebp - 0xc9c], 0x43e660

    condition:
        7 of them and filesize < 661504
}