rule win_soundbite_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.soundbite."
        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.soundbite"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 8b9564ffffff 51 52 ff15???????? 8b4d8c }
            // n = 5, score = 100
            //   8b9564ffffff         | mov                 edx, dword ptr [ebp - 0x9c]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   ff15????????         |                     
            //   8b4d8c               | mov                 ecx, dword ptr [ebp - 0x74]

        $sequence_1 = { 8b4610 8b550c 89480c 8b4d08 8b4610 3b480c 0f8f86000000 }
            // n = 7, score = 100
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]
            //   89480c               | mov                 dword ptr [eax + 0xc], ecx
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]
            //   3b480c               | cmp                 ecx, dword ptr [eax + 0xc]
            //   0f8f86000000         | jg                  0x8c

        $sequence_2 = { 7e30 8bc7 8d7dec e8???????? 8b5310 8b45ec }
            // n = 6, score = 100
            //   7e30                 | jle                 0x32
            //   8bc7                 | mov                 eax, edi
            //   8d7dec               | lea                 edi, [ebp - 0x14]
            //   e8????????           |                     
            //   8b5310               | mov                 edx, dword ptr [ebx + 0x10]
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]

        $sequence_3 = { 8b55e8 895628 c745fc09000000 8b45c4 8b4dc0 50 }
            // n = 6, score = 100
            //   8b55e8               | mov                 edx, dword ptr [ebp - 0x18]
            //   895628               | mov                 dword ptr [esi + 0x28], edx
            //   c745fc09000000       | mov                 dword ptr [ebp - 4], 9
            //   8b45c4               | mov                 eax, dword ptr [ebp - 0x3c]
            //   8b4dc0               | mov                 ecx, dword ptr [ebp - 0x40]
            //   50                   | push                eax

        $sequence_4 = { 8db5bcfcffff e9???????? 8db500ffffff e9???????? 8db574fcffff e9???????? }
            // n = 6, score = 100
            //   8db5bcfcffff         | lea                 esi, [ebp - 0x344]
            //   e9????????           |                     
            //   8db500ffffff         | lea                 esi, [ebp - 0x100]
            //   e9????????           |                     
            //   8db574fcffff         | lea                 esi, [ebp - 0x38c]
            //   e9????????           |                     

        $sequence_5 = { 53 56 57 83f820 7f23 }
            // n = 5, score = 100
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi
            //   83f820               | cmp                 eax, 0x20
            //   7f23                 | jg                  0x25

        $sequence_6 = { c745d8d0ffc1ff c745dcd0ffc9ff 8d45d0 b980000000 660108 83c002 66833800 }
            // n = 7, score = 100
            //   c745d8d0ffc1ff       | mov                 dword ptr [ebp - 0x28], 0xffc1ffd0
            //   c745dcd0ffc9ff       | mov                 dword ptr [ebp - 0x24], 0xffc9ffd0
            //   8d45d0               | lea                 eax, [ebp - 0x30]
            //   b980000000           | mov                 ecx, 0x80
            //   660108               | add                 word ptr [eax], cx
            //   83c002               | add                 eax, 2
            //   66833800             | cmp                 word ptr [eax], 0

        $sequence_7 = { 33ff 8d041b 3b4520 897dfc 8b5528 8b452c }
            // n = 6, score = 100
            //   33ff                 | xor                 edi, edi
            //   8d041b               | lea                 eax, [ebx + ebx]
            //   3b4520               | cmp                 eax, dword ptr [ebp + 0x20]
            //   897dfc               | mov                 dword ptr [ebp - 4], edi
            //   8b5528               | mov                 edx, dword ptr [ebp + 0x28]
            //   8b452c               | mov                 eax, dword ptr [ebp + 0x2c]

        $sequence_8 = { c785f8feffffeff2f9d7 889dfcfeffff c74594c3f2e5e1 c74598f4e5c6e9 c7459cece5d700 c745dcd2e5e1e4 c745e0c6e9ece5 }
            // n = 7, score = 100
            //   c785f8feffffeff2f9d7     | mov    dword ptr [ebp - 0x108], 0xd7f9f2ef
            //   889dfcfeffff         | mov                 byte ptr [ebp - 0x104], bl
            //   c74594c3f2e5e1       | mov                 dword ptr [ebp - 0x6c], 0xe1e5f2c3
            //   c74598f4e5c6e9       | mov                 dword ptr [ebp - 0x68], 0xe9c6e5f4
            //   c7459cece5d700       | mov                 dword ptr [ebp - 0x64], 0xd7e5ec
            //   c745dcd2e5e1e4       | mov                 dword ptr [ebp - 0x24], 0xe4e1e5d2
            //   c745e0c6e9ece5       | mov                 dword ptr [ebp - 0x20], 0xe5ece9c6

        $sequence_9 = { 6806100000 68ffff0000 51 c785b8fcffff10270000 ff15???????? 8b95f0fcffff 8b85ecfcffff }
            // n = 7, score = 100
            //   6806100000           | push                0x1006
            //   68ffff0000           | push                0xffff
            //   51                   | push                ecx
            //   c785b8fcffff10270000     | mov    dword ptr [ebp - 0x348], 0x2710
            //   ff15????????         |                     
            //   8b95f0fcffff         | mov                 edx, dword ptr [ebp - 0x310]
            //   8b85ecfcffff         | mov                 eax, dword ptr [ebp - 0x314]

    condition:
        7 of them and filesize < 409600
}