rule win_soundbite_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.soundbite"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { c745fcffffffff e8???????? 47 897db8 3b7d18 0f85fafaffff 8b4df4 }
            // n = 7, score = 100
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   e8????????           |                     
            //   47                   | inc                 edi
            //   897db8               | mov                 dword ptr [ebp - 0x48], edi
            //   3b7d18               | cmp                 edi, dword ptr [ebp + 0x18]
            //   0f85fafaffff         | jne                 0xfffffb00
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]

        $sequence_1 = { 7300 8bc6 3bf3 7202 8bc3 837f1410 7204 }
            // n = 7, score = 100
            //   7300                 | jae                 2
            //   8bc6                 | mov                 eax, esi
            //   3bf3                 | cmp                 esi, ebx
            //   7202                 | jb                  4
            //   8bc3                 | mov                 eax, ebx
            //   837f1410             | cmp                 dword ptr [edi + 0x14], 0x10
            //   7204                 | jb                  6

        $sequence_2 = { 8b5528 51 8b4d24 52 8b5520 51 8b08 }
            // n = 7, score = 100
            //   8b5528               | mov                 edx, dword ptr [ebp + 0x28]
            //   51                   | push                ecx
            //   8b4d24               | mov                 ecx, dword ptr [ebp + 0x24]
            //   52                   | push                edx
            //   8b5520               | mov                 edx, dword ptr [ebp + 0x20]
            //   51                   | push                ecx
            //   8b08                 | mov                 ecx, dword ptr [eax]

        $sequence_3 = { 81ec88000000 53 56 a1???????? 33c5 50 8d45f4 }
            // n = 7, score = 100
            //   81ec88000000         | sub                 esp, 0x88
            //   53                   | push                ebx
            //   56                   | push                esi
            //   a1????????           |                     
            //   33c5                 | xor                 eax, ebp
            //   50                   | push                eax
            //   8d45f4               | lea                 eax, [ebp - 0xc]

        $sequence_4 = { 7702 2bf0 8b4b04 833cb100 7514 6a2c e8???????? }
            // n = 7, score = 100
            //   7702                 | ja                  4
            //   2bf0                 | sub                 esi, eax
            //   8b4b04               | mov                 ecx, dword ptr [ebx + 4]
            //   833cb100             | cmp                 dword ptr [ecx + esi*4], 0
            //   7514                 | jne                 0x16
            //   6a2c                 | push                0x2c
            //   e8????????           |                     

        $sequence_5 = { 3b75e8 75d8 8b75a8 56 e8???????? 83c404 33c9 }
            // n = 7, score = 100
            //   3b75e8               | cmp                 esi, dword ptr [ebp - 0x18]
            //   75d8                 | jne                 0xffffffda
            //   8b75a8               | mov                 esi, dword ptr [ebp - 0x58]
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   33c9                 | xor                 ecx, ecx

        $sequence_6 = { 8b5520 85d2 7402 8b12 8b7208 3bf1 7702 }
            // n = 7, score = 100
            //   8b5520               | mov                 edx, dword ptr [ebp + 0x20]
            //   85d2                 | test                edx, edx
            //   7402                 | je                  4
            //   8b12                 | mov                 edx, dword ptr [edx]
            //   8b7208               | mov                 esi, dword ptr [edx + 8]
            //   3bf1                 | cmp                 esi, ecx
            //   7702                 | ja                  4

        $sequence_7 = { 8b09 3bcb 7404 8b09 8908 8b55e0 83ec0c }
            // n = 7, score = 100
            //   8b09                 | mov                 ecx, dword ptr [ecx]
            //   3bcb                 | cmp                 ecx, ebx
            //   7404                 | je                  6
            //   8b09                 | mov                 ecx, dword ptr [ecx]
            //   8908                 | mov                 dword ptr [eax], ecx
            //   8b55e0               | mov                 edx, dword ptr [ebp - 0x20]
            //   83ec0c               | sub                 esp, 0xc

        $sequence_8 = { 8d1491 8b0c02 03c8 8b75e0 8b55f4 890c16 85c9 }
            // n = 7, score = 100
            //   8d1491               | lea                 edx, [ecx + edx*4]
            //   8b0c02               | mov                 ecx, dword ptr [edx + eax]
            //   03c8                 | add                 ecx, eax
            //   8b75e0               | mov                 esi, dword ptr [ebp - 0x20]
            //   8b55f4               | mov                 edx, dword ptr [ebp - 0xc]
            //   890c16               | mov                 dword ptr [esi + edx], ecx
            //   85c9                 | test                ecx, ecx

        $sequence_9 = { 8995e4feffff 8b4620 8985e8feffff 8b4e24 898decfeffff 8b5628 8995f0feffff }
            // n = 7, score = 100
            //   8995e4feffff         | mov                 dword ptr [ebp - 0x11c], edx
            //   8b4620               | mov                 eax, dword ptr [esi + 0x20]
            //   8985e8feffff         | mov                 dword ptr [ebp - 0x118], eax
            //   8b4e24               | mov                 ecx, dword ptr [esi + 0x24]
            //   898decfeffff         | mov                 dword ptr [ebp - 0x114], ecx
            //   8b5628               | mov                 edx, dword ptr [esi + 0x28]
            //   8995f0feffff         | mov                 dword ptr [ebp - 0x110], edx

    condition:
        7 of them and filesize < 409600
}