rule win_socksbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.socksbot."
        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.socksbot"
        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 = { 75e9 5f 5b 8bc2 5e }
            // n = 5, score = 300
            //   75e9                 | jne                 0xffffffeb
            //   5f                   | pop                 edi
            //   5b                   | pop                 ebx
            //   8bc2                 | mov                 eax, edx
            //   5e                   | pop                 esi

        $sequence_1 = { 56 6a50 ff7508 33f6 8975fc e8???????? 8bd8 }
            // n = 7, score = 300
            //   56                   | push                esi
            //   6a50                 | push                0x50
            //   ff7508               | push                dword ptr [ebp + 8]
            //   33f6                 | xor                 esi, esi
            //   8975fc               | mov                 dword ptr [ebp - 4], esi
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax

        $sequence_2 = { 8d85bcfeffff 50 ff15???????? 40 }
            // n = 4, score = 300
            //   8d85bcfeffff         | lea                 eax, [ebp - 0x144]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   40                   | inc                 eax

        $sequence_3 = { 89759c ff15???????? 85c0 7507 32c0 e9???????? }
            // n = 6, score = 300
            //   89759c               | mov                 dword ptr [ebp - 0x64], esi
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7507                 | jne                 9
            //   32c0                 | xor                 al, al
            //   e9????????           |                     

        $sequence_4 = { 8b35???????? 57 ffd6 6a00 ff75f8 8bf8 }
            // n = 6, score = 300
            //   8b35????????         |                     
            //   57                   | push                edi
            //   ffd6                 | call                esi
            //   6a00                 | push                0
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   8bf8                 | mov                 edi, eax

        $sequence_5 = { 59 59 85f6 7e1c 33c0 50 }
            // n = 6, score = 300
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   85f6                 | test                esi, esi
            //   7e1c                 | jle                 0x1e
            //   33c0                 | xor                 eax, eax
            //   50                   | push                eax

        $sequence_6 = { 85c0 7564 8b45fc 33f6 8b08 }
            // n = 5, score = 300
            //   85c0                 | test                eax, eax
            //   7564                 | jne                 0x66
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   33f6                 | xor                 esi, esi
            //   8b08                 | mov                 ecx, dword ptr [eax]

        $sequence_7 = { 7550 ff758c e8???????? 8bd8 59 85db 7441 }
            // n = 7, score = 300
            //   7550                 | jne                 0x52
            //   ff758c               | push                dword ptr [ebp - 0x74]
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   59                   | pop                 ecx
            //   85db                 | test                ebx, ebx
            //   7441                 | je                  0x43

        $sequence_8 = { 890d???????? a3???????? 5e c9 c3 55 }
            // n = 6, score = 300
            //   890d????????         |                     
            //   a3????????           |                     
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c3                   | ret                 
            //   55                   | push                ebp

        $sequence_9 = { e8???????? 83c40c c6443dd000 8b7df8 }
            // n = 4, score = 300
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   c6443dd000           | mov                 byte ptr [ebp + edi - 0x30], 0
            //   8b7df8               | mov                 edi, dword ptr [ebp - 8]

    condition:
        7 of them and filesize < 73728
}