rule win_confucius_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.confucius"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { c60700 e8???????? 83c404 85c0 753c 8b0e }
            // n = 6, score = 100
            //   c60700               | mov                 byte ptr [edi], 0
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   85c0                 | test                eax, eax
            //   753c                 | jne                 0x3e
            //   8b0e                 | mov                 ecx, dword ptr [esi]

        $sequence_1 = { 66891448 41 3b5f04 72a4 }
            // n = 4, score = 100
            //   66891448             | mov                 word ptr [eax + ecx*2], dx
            //   41                   | inc                 ecx
            //   3b5f04               | cmp                 ebx, dword ptr [edi + 4]
            //   72a4                 | jb                  0xffffffa6

        $sequence_2 = { 897e1c 3bc8 7614 bf???????? 53 }
            // n = 5, score = 100
            //   897e1c               | mov                 dword ptr [esi + 0x1c], edi
            //   3bc8                 | cmp                 ecx, eax
            //   7614                 | jbe                 0x16
            //   bf????????           |                     
            //   53                   | push                ebx

        $sequence_3 = { 8bc7 c1e003 50 ff36 e8???????? 8906 }
            // n = 6, score = 100
            //   8bc7                 | mov                 eax, edi
            //   c1e003               | shl                 eax, 3
            //   50                   | push                eax
            //   ff36                 | push                dword ptr [esi]
            //   e8????????           |                     
            //   8906                 | mov                 dword ptr [esi], eax

        $sequence_4 = { 831d????????00 2bfe a3???????? 0f8575ffffff }
            // n = 4, score = 100
            //   831d????????00       |                     
            //   2bfe                 | sub                 edi, esi
            //   a3????????           |                     
            //   0f8575ffffff         | jne                 0xffffff7b

        $sequence_5 = { 8d460a 50 e8???????? 837dfc01 0fb7c0 }
            // n = 5, score = 100
            //   8d460a               | lea                 eax, [esi + 0xa]
            //   50                   | push                eax
            //   e8????????           |                     
            //   837dfc01             | cmp                 dword ptr [ebp - 4], 1
            //   0fb7c0               | movzx               eax, ax

        $sequence_6 = { 897e10 0f841affffff 6a02 6a01 56 e8???????? 8b4610 }
            // n = 7, score = 100
            //   897e10               | mov                 dword ptr [esi + 0x10], edi
            //   0f841affffff         | je                  0xffffff20
            //   6a02                 | push                2
            //   6a01                 | push                1
            //   56                   | push                esi
            //   e8????????           |                     
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]

        $sequence_7 = { 56 57 6a04 51 e8???????? 8b442440 83c414 }
            // n = 7, score = 100
            //   56                   | push                esi
            //   57                   | push                edi
            //   6a04                 | push                4
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8b442440             | mov                 eax, dword ptr [esp + 0x40]
            //   83c414               | add                 esp, 0x14

        $sequence_8 = { 7562 39542414 755c 81f96c070000 894c2414 7d17 }
            // n = 6, score = 100
            //   7562                 | jne                 0x64
            //   39542414             | cmp                 dword ptr [esp + 0x14], edx
            //   755c                 | jne                 0x5e
            //   81f96c070000         | cmp                 ecx, 0x76c
            //   894c2414             | mov                 dword ptr [esp + 0x14], ecx
            //   7d17                 | jge                 0x19

        $sequence_9 = { 8bf1 e8???????? 8b06 8b4e04 }
            // n = 4, score = 100
            //   8bf1                 | mov                 esi, ecx
            //   e8????????           |                     
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   8b4e04               | mov                 ecx, dword ptr [esi + 4]

        $sequence_10 = { 8a8760020000 6a06 84c0 53 }
            // n = 4, score = 100
            //   8a8760020000         | mov                 al, byte ptr [edi + 0x260]
            //   6a06                 | push                6
            //   84c0                 | test                al, al
            //   53                   | push                ebx

        $sequence_11 = { 8b97d8020000 8a03 880411 8b8fd8020000 }
            // n = 4, score = 100
            //   8b97d8020000         | mov                 edx, dword ptr [edi + 0x2d8]
            //   8a03                 | mov                 al, byte ptr [ebx]
            //   880411               | mov                 byte ptr [ecx + edx], al
            //   8b8fd8020000         | mov                 ecx, dword ptr [edi + 0x2d8]

        $sequence_12 = { 50 e8???????? c745f802000000 33c0 6689852897ffff 668985d0e7ffff }
            // n = 6, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   c745f802000000       | mov                 dword ptr [ebp - 8], 2
            //   33c0                 | xor                 eax, eax
            //   6689852897ffff       | mov                 word ptr [ebp - 0x68d8], ax
            //   668985d0e7ffff       | mov                 word ptr [ebp - 0x1830], ax

        $sequence_13 = { 1315???????? a3???????? 8d442420 50 8915???????? e8???????? 85c0 }
            // n = 7, score = 100
            //   1315????????         |                     
            //   a3????????           |                     
            //   8d442420             | lea                 eax, [esp + 0x20]
            //   50                   | push                eax
            //   8915????????         |                     
            //   e8????????           |                     
            //   85c0                 | test                eax, eax

        $sequence_14 = { 47 84c0 75c8 6a0a }
            // n = 4, score = 100
            //   47                   | inc                 edi
            //   84c0                 | test                al, al
            //   75c8                 | jne                 0xffffffca
            //   6a0a                 | push                0xa

        $sequence_15 = { 89742414 7fdb eb0e 8b9c24640f0000 8bbc24680f0000 8b742420 }
            // n = 6, score = 100
            //   89742414             | mov                 dword ptr [esp + 0x14], esi
            //   7fdb                 | jg                  0xffffffdd
            //   eb0e                 | jmp                 0x10
            //   8b9c24640f0000       | mov                 ebx, dword ptr [esp + 0xf64]
            //   8bbc24680f0000       | mov                 edi, dword ptr [esp + 0xf68]
            //   8b742420             | mov                 esi, dword ptr [esp + 0x20]

    condition:
        7 of them and filesize < 598016
}