rule win_racket_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.racket."
        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.racket"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 8bc8 8945f0 2bce b8abaaaa2a 8975fc f7e9 d1fa }
            // n = 7, score = 100
            //   8bc8                 | mov                 ecx, eax
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   2bce                 | sub                 ecx, esi
            //   b8abaaaa2a           | mov                 eax, 0x2aaaaaab
            //   8975fc               | mov                 dword ptr [ebp - 4], esi
            //   f7e9                 | imul                ecx
            //   d1fa                 | sar                 edx, 1

        $sequence_1 = { eb05 1bc0 83c801 85c0 7517 8935???????? 5e }
            // n = 7, score = 100
            //   eb05                 | jmp                 7
            //   1bc0                 | sbb                 eax, eax
            //   83c801               | or                  eax, 1
            //   85c0                 | test                eax, eax
            //   7517                 | jne                 0x19
            //   8935????????         |                     
            //   5e                   | pop                 esi

        $sequence_2 = { 7404 6a79 eb02 6a78 ff35???????? }
            // n = 5, score = 100
            //   7404                 | je                  6
            //   6a79                 | push                0x79
            //   eb02                 | jmp                 4
            //   6a78                 | push                0x78
            //   ff35????????         |                     

        $sequence_3 = { 8b45a4 85c0 7508 85c9 0f848c010000 8b55d8 8b45d4 }
            // n = 7, score = 100
            //   8b45a4               | mov                 eax, dword ptr [ebp - 0x5c]
            //   85c0                 | test                eax, eax
            //   7508                 | jne                 0xa
            //   85c9                 | test                ecx, ecx
            //   0f848c010000         | je                  0x192
            //   8b55d8               | mov                 edx, dword ptr [ebp - 0x28]
            //   8b45d4               | mov                 eax, dword ptr [ebp - 0x2c]

        $sequence_4 = { 57 8b4308 83e811 8b8ebc000000 8bbec8000000 85c9 7411 }
            // n = 7, score = 100
            //   57                   | push                edi
            //   8b4308               | mov                 eax, dword ptr [ebx + 8]
            //   83e811               | sub                 eax, 0x11
            //   8b8ebc000000         | mov                 ecx, dword ptr [esi + 0xbc]
            //   8bbec8000000         | mov                 edi, dword ptr [esi + 0xc8]
            //   85c9                 | test                ecx, ecx
            //   7411                 | je                  0x13

        $sequence_5 = { 8d144501000000 0fafd0 8bde 8b4508 894dfc 8d344d01000000 0faff1 }
            // n = 7, score = 100
            //   8d144501000000       | lea                 edx, [eax*2 + 1]
            //   0fafd0               | imul                edx, eax
            //   8bde                 | mov                 ebx, esi
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   894dfc               | mov                 dword ptr [ebp - 4], ecx
            //   8d344d01000000       | lea                 esi, [ecx*2 + 1]
            //   0faff1               | imul                esi, ecx

        $sequence_6 = { 8d45f4 64a300000000 8b7d18 8b4508 8b551c 89852cffffff 8b3f }
            // n = 7, score = 100
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   8b7d18               | mov                 edi, dword ptr [ebp + 0x18]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b551c               | mov                 edx, dword ptr [ebp + 0x1c]
            //   89852cffffff         | mov                 dword ptr [ebp - 0xd4], eax
            //   8b3f                 | mov                 edi, dword ptr [edi]

        $sequence_7 = { f3a5 8b8224020000 8d8b24020000 8901 8d8228020000 894d08 83c104 }
            // n = 7, score = 100
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8b8224020000         | mov                 eax, dword ptr [edx + 0x224]
            //   8d8b24020000         | lea                 ecx, [ebx + 0x224]
            //   8901                 | mov                 dword ptr [ecx], eax
            //   8d8228020000         | lea                 eax, [edx + 0x228]
            //   894d08               | mov                 dword ptr [ebp + 8], ecx
            //   83c104               | add                 ecx, 4

        $sequence_8 = { 33c5 50 8d45f4 64a300000000 8bd9 8b5304 8b7d08 }
            // n = 7, score = 100
            //   33c5                 | xor                 eax, ebp
            //   50                   | push                eax
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   8bd9                 | mov                 ebx, ecx
            //   8b5304               | mov                 edx, dword ptr [ebx + 4]
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]

        $sequence_9 = { 8bd0 8b37 2bd6 8b4d0c 8945e0 b8ffa16f6b f7ea }
            // n = 7, score = 100
            //   8bd0                 | mov                 edx, eax
            //   8b37                 | mov                 esi, dword ptr [edi]
            //   2bd6                 | sub                 edx, esi
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   8945e0               | mov                 dword ptr [ebp - 0x20], eax
            //   b8ffa16f6b           | mov                 eax, 0x6b6fa1ff
            //   f7ea                 | imul                edx

    condition:
        7 of them and filesize < 985088
}