rule win_pay2key_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.pay2key"
        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 = { 8d4d88 e9???????? 8d4dd8 e9???????? 8d8d2cffffff e9???????? 8b4d80 }
            // n = 7, score = 200
            //   8d4d88               | lea                 ecx, [ebp - 0x78]
            //   e9????????           |                     
            //   8d4dd8               | lea                 ecx, [ebp - 0x28]
            //   e9????????           |                     
            //   8d8d2cffffff         | lea                 ecx, [ebp - 0xd4]
            //   e9????????           |                     
            //   8b4d80               | mov                 ecx, dword ptr [ebp - 0x80]

        $sequence_1 = { 7202 8b36 33c0 668906 8d771c 8b4614 83f808 }
            // n = 7, score = 200
            //   7202                 | jb                  4
            //   8b36                 | mov                 esi, dword ptr [esi]
            //   33c0                 | xor                 eax, eax
            //   668906               | mov                 word ptr [esi], ax
            //   8d771c               | lea                 esi, [edi + 0x1c]
            //   8b4614               | mov                 eax, dword ptr [esi + 0x14]
            //   83f808               | cmp                 eax, 8

        $sequence_2 = { 0f85e3feffff 8b559c 8bc3 2bc2 7553 8d45af c645afff }
            // n = 7, score = 200
            //   0f85e3feffff         | jne                 0xfffffee9
            //   8b559c               | mov                 edx, dword ptr [ebp - 0x64]
            //   8bc3                 | mov                 eax, ebx
            //   2bc2                 | sub                 eax, edx
            //   7553                 | jne                 0x55
            //   8d45af               | lea                 eax, [ebp - 0x51]
            //   c645afff             | mov                 byte ptr [ebp - 0x51], 0xff

        $sequence_3 = { ff15???????? 85c0 7507 8bcf e8???????? 8b4e1c e8???????? }
            // n = 7, score = 200
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7507                 | jne                 9
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     
            //   8b4e1c               | mov                 ecx, dword ptr [esi + 0x1c]
            //   e8????????           |                     

        $sequence_4 = { c745dc07000000 6aff 50 56 8d4dc8 c745d800000000 668945c8 }
            // n = 7, score = 200
            //   c745dc07000000       | mov                 dword ptr [ebp - 0x24], 7
            //   6aff                 | push                -1
            //   50                   | push                eax
            //   56                   | push                esi
            //   8d4dc8               | lea                 ecx, [ebp - 0x38]
            //   c745d800000000       | mov                 dword ptr [ebp - 0x28], 0
            //   668945c8             | mov                 word ptr [ebp - 0x38], ax

        $sequence_5 = { 8b7714 8b36 90 837f1400 7517 68d8020000 68???????? }
            // n = 7, score = 200
            //   8b7714               | mov                 esi, dword ptr [edi + 0x14]
            //   8b36                 | mov                 esi, dword ptr [esi]
            //   90                   | nop                 
            //   837f1400             | cmp                 dword ptr [edi + 0x14], 0
            //   7517                 | jne                 0x19
            //   68d8020000           | push                0x2d8
            //   68????????           |                     

        $sequence_6 = { c645fc01 c70300000000 c7430400000000 8b750c 8b4508 8975f0 8945ec }
            // n = 7, score = 200
            //   c645fc01             | mov                 byte ptr [ebp - 4], 1
            //   c70300000000         | mov                 dword ptr [ebx], 0
            //   c7430400000000       | mov                 dword ptr [ebx + 4], 0
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8975f0               | mov                 dword ptr [ebp - 0x10], esi
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax

        $sequence_7 = { 837f4400 0f86b5010000 83ec18 8d45a8 8bcc 50 e8???????? }
            // n = 7, score = 200
            //   837f4400             | cmp                 dword ptr [edi + 0x44], 0
            //   0f86b5010000         | jbe                 0x1bb
            //   83ec18               | sub                 esp, 0x18
            //   8d45a8               | lea                 eax, [ebp - 0x58]
            //   8bcc                 | mov                 ecx, esp
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_8 = { 8bbd24ffffff 8b952cffffff 299384000000 8b37 837e0800 7517 68d8020000 }
            // n = 7, score = 200
            //   8bbd24ffffff         | mov                 edi, dword ptr [ebp - 0xdc]
            //   8b952cffffff         | mov                 edx, dword ptr [ebp - 0xd4]
            //   299384000000         | sub                 dword ptr [ebx + 0x84], edx
            //   8b37                 | mov                 esi, dword ptr [edi]
            //   837e0800             | cmp                 dword ptr [esi + 8], 0
            //   7517                 | jne                 0x19
            //   68d8020000           | push                0x2d8

        $sequence_9 = { 8b4d14 5f 5e f30f7e00 660fd601 8b4008 894108 }
            // n = 7, score = 200
            //   8b4d14               | mov                 ecx, dword ptr [ebp + 0x14]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   f30f7e00             | movq                xmm0, qword ptr [eax]
            //   660fd601             | movq                qword ptr [ecx], xmm0
            //   8b4008               | mov                 eax, dword ptr [eax + 8]
            //   894108               | mov                 dword ptr [ecx + 8], eax

    condition:
        7 of them and filesize < 2113536
}