rule win_socksbot_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.socksbot"
        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 = { 50 898de4fbffff 33c9 51 51 }
            // n = 5, score = 300
            //   50                   | push                eax
            //   898de4fbffff         | mov                 dword ptr [ebp - 0x41c], ecx
            //   33c9                 | xor                 ecx, ecx
            //   51                   | push                ecx
            //   51                   | push                ecx

        $sequence_1 = { 807b0101 0f85f6000000 33c0 89450c }
            // n = 4, score = 300
            //   807b0101             | cmp                 byte ptr [ebx + 1], 1
            //   0f85f6000000         | jne                 0xfc
            //   33c0                 | xor                 eax, eax
            //   89450c               | mov                 dword ptr [ebp + 0xc], eax

        $sequence_2 = { eb28 6a00 6800020000 8d85f4fcffff 50 53 ff15???????? }
            // n = 7, score = 300
            //   eb28                 | jmp                 0x2a
            //   6a00                 | push                0
            //   6800020000           | push                0x200
            //   8d85f4fcffff         | lea                 eax, [ebp - 0x30c]
            //   50                   | push                eax
            //   53                   | push                ebx
            //   ff15????????         |                     

        $sequence_3 = { 5d c3 ff750c 6a40 ff15???????? ff750c }
            // n = 6, score = 300
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   6a40                 | push                0x40
            //   ff15????????         |                     
            //   ff750c               | push                dword ptr [ebp + 0xc]

        $sequence_4 = { c6430104 8b7508 807b0100 7576 56 e8???????? }
            // n = 6, score = 300
            //   c6430104             | mov                 byte ptr [ebx + 1], 4
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   807b0100             | cmp                 byte ptr [ebx + 1], 0
            //   7576                 | jne                 0x78
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_5 = { 33c0 8d5801 895d08 eb07 57 ff15???????? 803d????????00 }
            // n = 7, score = 300
            //   33c0                 | xor                 eax, eax
            //   8d5801               | lea                 ebx, [eax + 1]
            //   895d08               | mov                 dword ptr [ebp + 8], ebx
            //   eb07                 | jmp                 9
            //   57                   | push                edi
            //   ff15????????         |                     
            //   803d????????00       |                     

        $sequence_6 = { 8d85e4fbffff 50 51 894de8 895dec e8???????? 8bf8 }
            // n = 7, score = 300
            //   8d85e4fbffff         | lea                 eax, [ebp - 0x41c]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   894de8               | mov                 dword ptr [ebp - 0x18], ecx
            //   895dec               | mov                 dword ptr [ebp - 0x14], ebx
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax

        $sequence_7 = { 8bc6 69c00c000100 33db 894c1008 6bc90c 43 }
            // n = 6, score = 300
            //   8bc6                 | mov                 eax, esi
            //   69c00c000100         | imul                eax, eax, 0x1000c
            //   33db                 | xor                 ebx, ebx
            //   894c1008             | mov                 dword ptr [eax + edx + 8], ecx
            //   6bc90c               | imul                ecx, ecx, 0xc
            //   43                   | inc                 ebx

        $sequence_8 = { ff7004 ff15???????? eb03 832700 }
            // n = 4, score = 300
            //   ff7004               | push                dword ptr [eax + 4]
            //   ff15????????         |                     
            //   eb03                 | jmp                 5
            //   832700               | and                 dword ptr [edi], 0

        $sequence_9 = { 85f6 7454 57 33c0 8d7df0 ab ab }
            // n = 7, score = 300
            //   85f6                 | test                esi, esi
            //   7454                 | je                  0x56
            //   57                   | push                edi
            //   33c0                 | xor                 eax, eax
            //   8d7df0               | lea                 edi, [ebp - 0x10]
            //   ab                   | stosd               dword ptr es:[edi], eax
            //   ab                   | stosd               dword ptr es:[edi], eax

    condition:
        7 of them and filesize < 73728
}