rule win_plaintee_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.plaintee"
        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 = { 50 ff15???????? 83f85a 721a 8a16 }
            // n = 5, score = 300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83f85a               | cmp                 eax, 0x5a
            //   721a                 | jb                  0x1c
            //   8a16                 | mov                 dl, byte ptr [esi]

        $sequence_1 = { 8a1c31 32da 881c31 41 3bc8 7cf3 }
            // n = 6, score = 300
            //   8a1c31               | mov                 bl, byte ptr [ecx + esi]
            //   32da                 | xor                 bl, dl
            //   881c31               | mov                 byte ptr [ecx + esi], bl
            //   41                   | inc                 ecx
            //   3bc8                 | cmp                 ecx, eax
            //   7cf3                 | jl                  0xfffffff5

        $sequence_2 = { 32da 881c31 41 3bc8 7cf3 }
            // n = 5, score = 300
            //   32da                 | xor                 bl, dl
            //   881c31               | mov                 byte ptr [ecx + esi], bl
            //   41                   | inc                 ecx
            //   3bc8                 | cmp                 ecx, eax
            //   7cf3                 | jl                  0xfffffff5

        $sequence_3 = { 8b400c 33c9 33d2 8b00 8a4803 8a5002 }
            // n = 6, score = 300
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   33c9                 | xor                 ecx, ecx
            //   33d2                 | xor                 edx, edx
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   8a4803               | mov                 cl, byte ptr [eax + 3]
            //   8a5002               | mov                 dl, byte ptr [eax + 2]

        $sequence_4 = { 754c 68ac010000 e8???????? 83c404 85c0 7412 }
            // n = 6, score = 300
            //   754c                 | jne                 0x4e
            //   68ac010000           | push                0x1ac
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   85c0                 | test                eax, eax
            //   7412                 | je                  0x14

        $sequence_5 = { 68???????? 52 ff15???????? 83c408 b9ff000000 33c0 }
            // n = 6, score = 300
            //   68????????           |                     
            //   52                   | push                edx
            //   ff15????????         |                     
            //   83c408               | add                 esp, 8
            //   b9ff000000           | mov                 ecx, 0xff
            //   33c0                 | xor                 eax, eax

        $sequence_6 = { 68???????? ff15???????? 8b400c 8b08 8b11 52 }
            // n = 6, score = 300
            //   68????????           |                     
            //   ff15????????         |                     
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   52                   | push                edx

        $sequence_7 = { 8b742410 f7f9 8b4c240c b801000000 80c20a }
            // n = 5, score = 300
            //   8b742410             | mov                 esi, dword ptr [esp + 0x10]
            //   f7f9                 | idiv                ecx
            //   8b4c240c             | mov                 ecx, dword ptr [esp + 0xc]
            //   b801000000           | mov                 eax, 1
            //   80c20a               | add                 dl, 0xa

        $sequence_8 = { 81ec90010000 8d442400 56 50 8bf1 6802020000 ff15???????? }
            // n = 7, score = 300
            //   81ec90010000         | sub                 esp, 0x190
            //   8d442400             | lea                 eax, [esp]
            //   56                   | push                esi
            //   50                   | push                eax
            //   8bf1                 | mov                 esi, ecx
            //   6802020000           | push                0x202
            //   ff15????????         |                     

        $sequence_9 = { 8be9 57 b916000000 33c0 }
            // n = 4, score = 300
            //   8be9                 | mov                 ebp, ecx
            //   57                   | push                edi
            //   b916000000           | mov                 ecx, 0x16
            //   33c0                 | xor                 eax, eax

    condition:
        7 of them and filesize < 73728
}