rule win_anel_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-11-21"
        version = "1"
        description = "Detects win.anel."
        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.anel"
        malpedia_rule_date = "20221118"
        malpedia_hash = "e0702e2e6d1d00da65c8a29a4ebacd0a4c59e1af"
        malpedia_version = "20221125"
        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 = { 8d5dd4 c60000 e8???????? 6a01 8bf3 e8???????? }
            // n = 6, score = 200
            //   8d5dd4               | lea                 ebx, [ebp - 0x2c]
            //   c60000               | mov                 byte ptr [eax], 0
            //   e8????????           |                     
            //   6a01                 | push                1
            //   8bf3                 | mov                 esi, ebx
            //   e8????????           |                     

        $sequence_1 = { c645fc0e e8???????? 8bd8 8b4588 c645fc0f e8???????? 6a01 }
            // n = 7, score = 200
            //   c645fc0e             | mov                 byte ptr [ebp - 4], 0xe
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   8b4588               | mov                 eax, dword ptr [ebp - 0x78]
            //   c645fc0f             | mov                 byte ptr [ebp - 4], 0xf
            //   e8????????           |                     
            //   6a01                 | push                1

        $sequence_2 = { 8b87ac010000 837e1410 7204 8b0e eb02 }
            // n = 5, score = 200
            //   8b87ac010000         | mov                 eax, dword ptr [edi + 0x1ac]
            //   837e1410             | cmp                 dword ptr [esi + 0x14], 0x10
            //   7204                 | jb                  6
            //   8b0e                 | mov                 ecx, dword ptr [esi]
            //   eb02                 | jmp                 4

        $sequence_3 = { e8???????? 40 50 53 8d4598 50 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   40                   | inc                 eax
            //   50                   | push                eax
            //   53                   | push                ebx
            //   8d4598               | lea                 eax, [ebp - 0x68]
            //   50                   | push                eax

        $sequence_4 = { 6a00 8d8db8fbffff e8???????? 8365bc00 89853cfaffff c745c00f000000 }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   8d8db8fbffff         | lea                 ecx, [ebp - 0x448]
            //   e8????????           |                     
            //   8365bc00             | and                 dword ptr [ebp - 0x44], 0
            //   89853cfaffff         | mov                 dword ptr [ebp - 0x5c4], eax
            //   c745c00f000000       | mov                 dword ptr [ebp - 0x40], 0xf

        $sequence_5 = { 8db568ffffff e8???????? 6a01 8d7590 e8???????? 6a01 8d75ac }
            // n = 7, score = 200
            //   8db568ffffff         | lea                 esi, [ebp - 0x98]
            //   e8????????           |                     
            //   6a01                 | push                1
            //   8d7590               | lea                 esi, [ebp - 0x70]
            //   e8????????           |                     
            //   6a01                 | push                1
            //   8d75ac               | lea                 esi, [ebp - 0x54]

        $sequence_6 = { e8???????? 59 8d442430 8bcf e8???????? 89b424b0000000 8b442440 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   8d442430             | lea                 eax, [esp + 0x30]
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     
            //   89b424b0000000       | mov                 dword ptr [esp + 0xb0], esi
            //   8b442440             | mov                 eax, dword ptr [esp + 0x40]

        $sequence_7 = { 7303 8d4dd0 c604015c 40 3b45e0 72d8 }
            // n = 6, score = 200
            //   7303                 | jae                 5
            //   8d4dd0               | lea                 ecx, [ebp - 0x30]
            //   c604015c             | mov                 byte ptr [ecx + eax], 0x5c
            //   40                   | inc                 eax
            //   3b45e0               | cmp                 eax, dword ptr [ebp - 0x20]
            //   72d8                 | jb                  0xffffffda

        $sequence_8 = { 334dec d1e8 3345e8 684febd427 51 }
            // n = 5, score = 200
            //   334dec               | xor                 ecx, dword ptr [ebp - 0x14]
            //   d1e8                 | shr                 eax, 1
            //   3345e8               | xor                 eax, dword ptr [ebp - 0x18]
            //   684febd427           | push                0x27d4eb4f
            //   51                   | push                ecx

        $sequence_9 = { 8bc6 e8???????? 6a01 33ff 8d75d4 e8???????? }
            // n = 6, score = 200
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   6a01                 | push                1
            //   33ff                 | xor                 edi, edi
            //   8d75d4               | lea                 esi, [ebp - 0x2c]
            //   e8????????           |                     

    condition:
        7 of them and filesize < 376832
}