rule win_mydogs_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.mydogs."
        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.mydogs"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 8b5d94 8b75cc 8b7dc8 85db }
            // n = 4, score = 200
            //   8b5d94               | mov                 ebx, dword ptr [ebp - 0x6c]
            //   8b75cc               | mov                 esi, dword ptr [ebp - 0x34]
            //   8b7dc8               | mov                 edi, dword ptr [ebp - 0x38]
            //   85db                 | test                ebx, ebx

        $sequence_1 = { 56 e8???????? 8b9d84fcffff 53 }
            // n = 4, score = 200
            //   56                   | push                esi
            //   e8????????           |                     
            //   8b9d84fcffff         | mov                 ebx, dword ptr [ebp - 0x37c]
            //   53                   | push                ebx

        $sequence_2 = { 0f8537060000 8bcb e8???????? 85c0 0f852d060000 8985c4feffff 8885a0fbffff }
            // n = 7, score = 200
            //   0f8537060000         | jne                 0x63d
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f852d060000         | jne                 0x633
            //   8985c4feffff         | mov                 dword ptr [ebp - 0x13c], eax
            //   8885a0fbffff         | mov                 byte ptr [ebp - 0x460], al

        $sequence_3 = { 8a08 40 84c9 75f9 2bc2 7462 8d85f4fdffff }
            // n = 7, score = 200
            //   8a08                 | mov                 cl, byte ptr [eax]
            //   40                   | inc                 eax
            //   84c9                 | test                cl, cl
            //   75f9                 | jne                 0xfffffffb
            //   2bc2                 | sub                 eax, edx
            //   7462                 | je                  0x64
            //   8d85f4fdffff         | lea                 eax, [ebp - 0x20c]

        $sequence_4 = { 83e00f 8d49c4 c1e104 0bc8 8b45ee c1e105 83e01f }
            // n = 7, score = 200
            //   83e00f               | and                 eax, 0xf
            //   8d49c4               | lea                 ecx, [ecx - 0x3c]
            //   c1e104               | shl                 ecx, 4
            //   0bc8                 | or                  ecx, eax
            //   8b45ee               | mov                 eax, dword ptr [ebp - 0x12]
            //   c1e105               | shl                 ecx, 5
            //   83e01f               | and                 eax, 0x1f

        $sequence_5 = { b8d5917ed4 b90d000000 8d3c0e 8a0e 8bd0 69c0fd430300 32ca }
            // n = 7, score = 200
            //   b8d5917ed4           | mov                 eax, 0xd47e91d5
            //   b90d000000           | mov                 ecx, 0xd
            //   8d3c0e               | lea                 edi, [esi + ecx]
            //   8a0e                 | mov                 cl, byte ptr [esi]
            //   8bd0                 | mov                 edx, eax
            //   69c0fd430300         | imul                eax, eax, 0x343fd
            //   32ca                 | xor                 cl, dl

        $sequence_6 = { e8???????? 83c404 8d542434 50 8d8c24b8030000 e8???????? 8b3d???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8d542434             | lea                 edx, [esp + 0x34]
            //   50                   | push                eax
            //   8d8c24b8030000       | lea                 ecx, [esp + 0x3b8]
            //   e8????????           |                     
            //   8b3d????????         |                     

        $sequence_7 = { 6880000000 8d85fcfeffff 6a01 50 e8???????? 83c420 8da42400000000 }
            // n = 7, score = 200
            //   6880000000           | push                0x80
            //   8d85fcfeffff         | lea                 eax, [ebp - 0x104]
            //   6a01                 | push                1
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c420               | add                 esp, 0x20
            //   8da42400000000       | lea                 esp, [esp]

        $sequence_8 = { 56 ffd3 85c0 0f8541ffffff 56 ff15???????? 8b8d08f4ffff }
            // n = 7, score = 200
            //   56                   | push                esi
            //   ffd3                 | call                ebx
            //   85c0                 | test                eax, eax
            //   0f8541ffffff         | jne                 0xffffff47
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8b8d08f4ffff         | mov                 ecx, dword ptr [ebp - 0xbf8]

        $sequence_9 = { 75f9 2bca 83f903 0f82b0050000 8bcb 8d5101 }
            // n = 6, score = 200
            //   75f9                 | jne                 0xfffffffb
            //   2bca                 | sub                 ecx, edx
            //   83f903               | cmp                 ecx, 3
            //   0f82b0050000         | jb                  0x5b6
            //   8bcb                 | mov                 ecx, ebx
            //   8d5101               | lea                 edx, [ecx + 1]

    condition:
        7 of them and filesize < 313344
}