rule win_goldenspy_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        version = "1"
        description = "Detects win.goldenspy."
        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.goldenspy"
        malpedia_rule_date = "20220805"
        malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
        malpedia_version = "20220808"
        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 = { c745d400000000 0f1100 660fd64010 c740140f000000 8901 }
            // n = 5, score = 100
            //   c745d400000000       | mov                 dword ptr [ebp - 0x2c], 0
            //   0f1100               | movups              xmmword ptr [eax], xmm0
            //   660fd64010           | movq                qword ptr [eax + 0x10], xmm0
            //   c740140f000000       | mov                 dword ptr [eax + 0x14], 0xf
            //   8901                 | mov                 dword ptr [ecx], eax

        $sequence_1 = { 8b04c584ef4500 5d c3 8bff 55 8bec 56 }
            // n = 7, score = 100
            //   8b04c584ef4500       | mov                 eax, dword ptr [eax*8 + 0x45ef84]
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8bff                 | mov                 edi, edi
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi

        $sequence_2 = { 8d8d40ffffff e8???????? 8bc6 8b4df4 64890d00000000 59 5f }
            // n = 7, score = 100
            //   8d8d40ffffff         | lea                 ecx, [ebp - 0xc0]
            //   e8????????           |                     
            //   8bc6                 | mov                 eax, esi
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   64890d00000000       | mov                 dword ptr fs:[0], ecx
            //   59                   | pop                 ecx
            //   5f                   | pop                 edi

        $sequence_3 = { 0f11850cffffff 0f1005???????? 0f11851cffffff f30f7e05???????? 660fd6852cffffff 8a02 42 }
            // n = 7, score = 100
            //   0f11850cffffff       | movups              xmmword ptr [ebp - 0xf4], xmm0
            //   0f1005????????       |                     
            //   0f11851cffffff       | movups              xmmword ptr [ebp - 0xe4], xmm0
            //   f30f7e05????????     |                     
            //   660fd6852cffffff     | movq                qword ptr [ebp - 0xd4], xmm0
            //   8a02                 | mov                 al, byte ptr [edx]
            //   42                   | inc                 edx

        $sequence_4 = { 81a548ffffff00feffff 89853cffffff c7854cffffff00000000 8d8d50ffffff c745fc01000000 e8???????? }
            // n = 6, score = 100
            //   81a548ffffff00feffff     | and    dword ptr [ebp - 0xb8], 0xfffffe00
            //   89853cffffff         | mov                 dword ptr [ebp - 0xc4], eax
            //   c7854cffffff00000000     | mov    dword ptr [ebp - 0xb4], 0
            //   8d8d50ffffff         | lea                 ecx, [ebp - 0xb0]
            //   c745fc01000000       | mov                 dword ptr [ebp - 4], 1
            //   e8????????           |                     

        $sequence_5 = { e8???????? 8d8de8feffff c645fc19 e8???????? 8b36 3bf7 0f8567fcffff }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d8de8feffff         | lea                 ecx, [ebp - 0x118]
            //   c645fc19             | mov                 byte ptr [ebp - 4], 0x19
            //   e8????????           |                     
            //   8b36                 | mov                 esi, dword ptr [esi]
            //   3bf7                 | cmp                 esi, edi
            //   0f8567fcffff         | jne                 0xfffffc6d

        $sequence_6 = { 52 51 e8???????? 83c408 33f6 8b55ec 83fa10 }
            // n = 7, score = 100
            //   52                   | push                edx
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   33f6                 | xor                 esi, esi
            //   8b55ec               | mov                 edx, dword ptr [ebp - 0x14]
            //   83fa10               | cmp                 edx, 0x10

        $sequence_7 = { c745d444e04600 e8???????? 8b55ec c7464400000000 c6464300 c6464800 83fa10 }
            // n = 7, score = 100
            //   c745d444e04600       | mov                 dword ptr [ebp - 0x2c], 0x46e044
            //   e8????????           |                     
            //   8b55ec               | mov                 edx, dword ptr [ebp - 0x14]
            //   c7464400000000       | mov                 dword ptr [esi + 0x44], 0
            //   c6464300             | mov                 byte ptr [esi + 0x43], 0
            //   c6464800             | mov                 byte ptr [esi + 0x48], 0
            //   83fa10               | cmp                 edx, 0x10

        $sequence_8 = { 8b09 51 52 50 51 8d8d70ffffff e8???????? }
            // n = 7, score = 100
            //   8b09                 | mov                 ecx, dword ptr [ecx]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   50                   | push                eax
            //   51                   | push                ecx
            //   8d8d70ffffff         | lea                 ecx, [ebp - 0x90]
            //   e8????????           |                     

        $sequence_9 = { 0f82d0000000 8b49fc 83c223 2bc1 83c0fc 83f81f 0f87e4000000 }
            // n = 7, score = 100
            //   0f82d0000000         | jb                  0xd6
            //   8b49fc               | mov                 ecx, dword ptr [ecx - 4]
            //   83c223               | add                 edx, 0x23
            //   2bc1                 | sub                 eax, ecx
            //   83c0fc               | add                 eax, -4
            //   83f81f               | cmp                 eax, 0x1f
            //   0f87e4000000         | ja                  0xea

    condition:
        7 of them and filesize < 1081344
}