rule win_snifula_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.snifula."
        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.snifula"
        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 = { 83c414 68???????? 56 68???????? 8bd8 8945fc e8???????? }
            // n = 7, score = 200
            //   83c414               | add                 esp, 0x14
            //   68????????           |                     
            //   56                   | push                esi
            //   68????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   e8????????           |                     

        $sequence_1 = { 8d4df4 51 8b4e04 03c8 51 e8???????? }
            // n = 6, score = 200
            //   8d4df4               | lea                 ecx, [ebp - 0xc]
            //   51                   | push                ecx
            //   8b4e04               | mov                 ecx, dword ptr [esi + 4]
            //   03c8                 | add                 ecx, eax
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_2 = { 53 eb46 8bc3 2b45fc 8945f4 40 50 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   eb46                 | jmp                 0x48
            //   8bc3                 | mov                 eax, ebx
            //   2b45fc               | sub                 eax, dword ptr [ebp - 4]
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   40                   | inc                 eax
            //   50                   | push                eax

        $sequence_3 = { ff75f8 ff75f4 68???????? 56 ff15???????? 83c414 68???????? }
            // n = 7, score = 200
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   68????????           |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   83c414               | add                 esp, 0x14
            //   68????????           |                     

        $sequence_4 = { 8b45f8 5f c9 c20400 56 }
            // n = 5, score = 200
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   5f                   | pop                 edi
            //   c9                   | leave               
            //   c20400               | ret                 4
            //   56                   | push                esi

        $sequence_5 = { 85c0 7405 397d08 7407 c7461403000000 f70600000040 7407 }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   7405                 | je                  7
            //   397d08               | cmp                 dword ptr [ebp + 8], edi
            //   7407                 | je                  9
            //   c7461403000000       | mov                 dword ptr [esi + 0x14], 3
            //   f70600000040         | test                dword ptr [esi], 0x40000000
            //   7407                 | je                  9

        $sequence_6 = { 8b0424 59 c20400 57 6a0c 6a40 33ff }
            // n = 7, score = 200
            //   8b0424               | mov                 eax, dword ptr [esp]
            //   59                   | pop                 ecx
            //   c20400               | ret                 4
            //   57                   | push                edi
            //   6a0c                 | push                0xc
            //   6a40                 | push                0x40
            //   33ff                 | xor                 edi, edi

        $sequence_7 = { bf???????? eb19 6a0d 5d 68???????? }
            // n = 5, score = 200
            //   bf????????           |                     
            //   eb19                 | jmp                 0x1b
            //   6a0d                 | push                0xd
            //   5d                   | pop                 ebp
            //   68????????           |                     

        $sequence_8 = { 6a00 ff35???????? ffd6 53 8bf0 }
            // n = 5, score = 200
            //   6a00                 | push                0
            //   ff35????????         |                     
            //   ffd6                 | call                esi
            //   53                   | push                ebx
            //   8bf0                 | mov                 esi, eax

        $sequence_9 = { 53 a3???????? ff15???????? a3???????? 3bc3 7505 6a02 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   a3????????           |                     
            //   ff15????????         |                     
            //   a3????????           |                     
            //   3bc3                 | cmp                 eax, ebx
            //   7505                 | jne                 7
            //   6a02                 | push                2

    condition:
        7 of them and filesize < 188416
}