rule win_pay2key_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.pay2key."
        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.pay2key"
        malpedia_rule_date = "20221118"
        malpedia_hash = "e0702e2e6d1d00da65c8a29a4ebacd0a4c59e1af"
        malpedia_version = "20221125"
        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 = { c745fc06000000 8b750c 85f6 7421 83cfff 8bc7 f00fc14604 }
            // n = 7, score = 300
            //   c745fc06000000       | mov                 dword ptr [ebp - 4], 6
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   85f6                 | test                esi, esi
            //   7421                 | je                  0x23
            //   83cfff               | or                  edi, 0xffffffff
            //   8bc7                 | mov                 eax, edi
            //   f00fc14604           | lock xadd           dword ptr [esi + 4], eax

        $sequence_1 = { 8b7508 85f6 7433 33c0 c7461407000000 c7461000000000 8bce }
            // n = 7, score = 300
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   85f6                 | test                esi, esi
            //   7433                 | je                  0x35
            //   33c0                 | xor                 eax, eax
            //   c7461407000000       | mov                 dword ptr [esi + 0x14], 7
            //   c7461000000000       | mov                 dword ptr [esi + 0x10], 0
            //   8bce                 | mov                 ecx, esi

        $sequence_2 = { 8d4dd0 e9???????? 8d4dbc e9???????? 8b542408 8d420c 8b4ac4 }
            // n = 7, score = 300
            //   8d4dd0               | lea                 ecx, [ebp - 0x30]
            //   e9????????           |                     
            //   8d4dbc               | lea                 ecx, [ebp - 0x44]
            //   e9????????           |                     
            //   8b542408             | mov                 edx, dword ptr [esp + 8]
            //   8d420c               | lea                 eax, [edx + 0xc]
            //   8b4ac4               | mov                 ecx, dword ptr [edx - 0x3c]

        $sequence_3 = { b9???????? e8???????? 68???????? e8???????? 83c404 6a00 8d45e8 }
            // n = 7, score = 300
            //   b9????????           |                     
            //   e8????????           |                     
            //   68????????           |                     
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   6a00                 | push                0
            //   8d45e8               | lea                 eax, [ebp - 0x18]

        $sequence_4 = { c7470800000000 c7470c00000000 8b4710 894650 8bc6 8b4df4 64890d00000000 }
            // n = 7, score = 300
            //   c7470800000000       | mov                 dword ptr [edi + 8], 0
            //   c7470c00000000       | mov                 dword ptr [edi + 0xc], 0
            //   8b4710               | mov                 eax, dword ptr [edi + 0x10]
            //   894650               | mov                 dword ptr [esi + 0x50], eax
            //   8bc6                 | mov                 eax, esi
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   64890d00000000       | mov                 dword ptr fs:[0], ecx

        $sequence_5 = { 8bec 83ec08 56 8bf1 c745f800000000 8bca 8975fc }
            // n = 7, score = 300
            //   8bec                 | mov                 ebp, esp
            //   83ec08               | sub                 esp, 8
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0
            //   8bca                 | mov                 ecx, edx
            //   8975fc               | mov                 dword ptr [ebp - 4], esi

        $sequence_6 = { ff5008 c745fc01000000 8b1f 8b7708 83c604 837b0800 7517 }
            // n = 7, score = 300
            //   ff5008               | call                dword ptr [eax + 8]
            //   c745fc01000000       | mov                 dword ptr [ebp - 4], 1
            //   8b1f                 | mov                 ebx, dword ptr [edi]
            //   8b7708               | mov                 esi, dword ptr [edi + 8]
            //   83c604               | add                 esi, 4
            //   837b0800             | cmp                 dword ptr [ebx + 8], 0
            //   7517                 | jne                 0x19

        $sequence_7 = { c645fc09 8bcc ff7508 e8???????? 8bcf c645fc01 e8???????? }
            // n = 7, score = 300
            //   c645fc09             | mov                 byte ptr [ebp - 4], 9
            //   8bcc                 | mov                 ecx, esp
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   8bcf                 | mov                 ecx, edi
            //   c645fc01             | mov                 byte ptr [ebp - 4], 1
            //   e8????????           |                     

        $sequence_8 = { 6a23 68???????? 68???????? e8???????? 83c40c 6a04 56 }
            // n = 7, score = 300
            //   6a23                 | push                0x23
            //   68????????           |                     
            //   68????????           |                     
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6a04                 | push                4
            //   56                   | push                esi

        $sequence_9 = { f30f7e4020 83c028 660fd64120 83c128 50 e8???????? 8bce }
            // n = 7, score = 300
            //   f30f7e4020           | movq                xmm0, qword ptr [eax + 0x20]
            //   83c028               | add                 eax, 0x28
            //   660fd64120           | movq                qword ptr [ecx + 0x20], xmm0
            //   83c128               | add                 ecx, 0x28
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bce                 | mov                 ecx, esi

    condition:
        7 of them and filesize < 2252800
}