rule win_goldenspy_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.goldenspy"
        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 = { 0f84af010000 8d4598 8bcf 50 e8???????? 8ac8 8b4598 }
            // n = 7, score = 100
            //   0f84af010000         | je                  0x1b5
            //   8d4598               | lea                 eax, [ebp - 0x68]
            //   8bcf                 | mov                 ecx, edi
            //   50                   | push                eax
            //   e8????????           |                     
            //   8ac8                 | mov                 cl, al
            //   8b4598               | mov                 eax, dword ptr [ebp - 0x68]

        $sequence_1 = { 8d45f4 64a300000000 8965f0 8bda 8bf9 85ff 7457 }
            // n = 7, score = 100
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   8965f0               | mov                 dword ptr [ebp - 0x10], esp
            //   8bda                 | mov                 ebx, edx
            //   8bf9                 | mov                 edi, ecx
            //   85ff                 | test                edi, edi
            //   7457                 | je                  0x59

        $sequence_2 = { 83793800 0f45c2 50 e8???????? c745fc0a000000 e8???????? 84c0 }
            // n = 7, score = 100
            //   83793800             | cmp                 dword ptr [ecx + 0x38], 0
            //   0f45c2               | cmovne              eax, edx
            //   50                   | push                eax
            //   e8????????           |                     
            //   c745fc0a000000       | mov                 dword ptr [ebp - 4], 0xa
            //   e8????????           |                     
            //   84c0                 | test                al, al

        $sequence_3 = { 7405 8b7308 eb4d 8b03 80780d00 7428 }
            // n = 6, score = 100
            //   7405                 | je                  7
            //   8b7308               | mov                 esi, dword ptr [ebx + 8]
            //   eb4d                 | jmp                 0x4f
            //   8b03                 | mov                 eax, dword ptr [ebx]
            //   80780d00             | cmp                 byte ptr [eax + 0xd], 0
            //   7428                 | je                  0x2a

        $sequence_4 = { 837dbc10 8b0488 8b0cb0 8d45a8 0f4345a8 51 50 }
            // n = 7, score = 100
            //   837dbc10             | cmp                 dword ptr [ebp - 0x44], 0x10
            //   8b0488               | mov                 eax, dword ptr [eax + ecx*4]
            //   8b0cb0               | mov                 ecx, dword ptr [eax + esi*4]
            //   8d45a8               | lea                 eax, [ebp - 0x58]
            //   0f4345a8             | cmovae              eax, dword ptr [ebp - 0x58]
            //   51                   | push                ecx
            //   50                   | push                eax

        $sequence_5 = { 8965f0 83790400 7425 c745fc00000000 8b410c f7d0 3b4508 }
            // n = 7, score = 100
            //   8965f0               | mov                 dword ptr [ebp - 0x10], esp
            //   83790400             | cmp                 dword ptr [ecx + 4], 0
            //   7425                 | je                  0x27
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   8b410c               | mov                 eax, dword ptr [ecx + 0xc]
            //   f7d0                 | not                 eax
            //   3b4508               | cmp                 eax, dword ptr [ebp + 8]

        $sequence_6 = { e8???????? 8be5 5d c3 8bf3 8845ec ff75ec }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8bf3                 | mov                 esi, ebx
            //   8845ec               | mov                 byte ptr [ebp - 0x14], al
            //   ff75ec               | push                dword ptr [ebp - 0x14]

        $sequence_7 = { 8bd0 83c404 895514 85d2 0f8400010000 b9???????? c7451001000000 }
            // n = 7, score = 100
            //   8bd0                 | mov                 edx, eax
            //   83c404               | add                 esp, 4
            //   895514               | mov                 dword ptr [ebp + 0x14], edx
            //   85d2                 | test                edx, edx
            //   0f8400010000         | je                  0x106
            //   b9????????           |                     
            //   c7451001000000       | mov                 dword ptr [ebp + 0x10], 1

        $sequence_8 = { 68???????? 8bc1 50 e8???????? 51 8d4dc0 e8???????? }
            // n = 7, score = 100
            //   68????????           |                     
            //   8bc1                 | mov                 eax, ecx
            //   50                   | push                eax
            //   e8????????           |                     
            //   51                   | push                ecx
            //   8d4dc0               | lea                 ecx, [ebp - 0x40]
            //   e8????????           |                     

        $sequence_9 = { 8b7604 8d0437 2bf0 0375f4 56 50 }
            // n = 6, score = 100
            //   8b7604               | mov                 esi, dword ptr [esi + 4]
            //   8d0437               | lea                 eax, [edi + esi]
            //   2bf0                 | sub                 esi, eax
            //   0375f4               | add                 esi, dword ptr [ebp - 0xc]
            //   56                   | push                esi
            //   50                   | push                eax

    condition:
        7 of them and filesize < 1081344
}