rule win_anel_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 53 8db55cffffff e8???????? 53 8d75b0 e8???????? 8d9d24feffff }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   8db55cffffff         | lea                 esi, [ebp - 0xa4]
            //   e8????????           |                     
            //   53                   | push                ebx
            //   8d75b0               | lea                 esi, [ebp - 0x50]
            //   e8????????           |                     
            //   8d9d24feffff         | lea                 ebx, [ebp - 0x1dc]

        $sequence_1 = { 8b4598 8b402c 7204 8b0e eb02 8bce 50 }
            // n = 7, score = 200
            //   8b4598               | mov                 eax, dword ptr [ebp - 0x68]
            //   8b402c               | mov                 eax, dword ptr [eax + 0x2c]
            //   7204                 | jb                  6
            //   8b0e                 | mov                 ecx, dword ptr [esi]
            //   eb02                 | jmp                 4
            //   8bce                 | mov                 ecx, esi
            //   50                   | push                eax

        $sequence_2 = { 8db544ffffff e8???????? 8d9d34ffffff e8???????? eb10 68???????? ffb530ffffff }
            // n = 7, score = 200
            //   8db544ffffff         | lea                 esi, [ebp - 0xbc]
            //   e8????????           |                     
            //   8d9d34ffffff         | lea                 ebx, [ebp - 0xcc]
            //   e8????????           |                     
            //   eb10                 | jmp                 0x12
            //   68????????           |                     
            //   ffb530ffffff         | push                dword ptr [ebp - 0xd0]

        $sequence_3 = { 55 8bec 51 51 8b0b 85c9 743e }
            // n = 7, score = 200
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   51                   | push                ecx
            //   51                   | push                ecx
            //   8b0b                 | mov                 ecx, dword ptr [ebx]
            //   85c9                 | test                ecx, ecx
            //   743e                 | je                  0x40

        $sequence_4 = { ffb540faffff 50 8d85b8fbffff 50 e8???????? 6a0f 59 }
            // n = 7, score = 200
            //   ffb540faffff         | push                dword ptr [ebp - 0x5c0]
            //   50                   | push                eax
            //   8d85b8fbffff         | lea                 eax, [ebp - 0x448]
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a0f                 | push                0xf
            //   59                   | pop                 ecx

        $sequence_5 = { a5 8b7df4 8d75c0 a5 a5 a5 a5 }
            // n = 7, score = 200
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   8b7df4               | mov                 edi, dword ptr [ebp - 0xc]
            //   8d75c0               | lea                 esi, [ebp - 0x40]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]
            //   a5                   | movsd               dword ptr es:[edi], dword ptr [esi]

        $sequence_6 = { c1fe04 81fefeffff0f 760a 68???????? e8???????? 8b4208 2bc1 }
            // n = 7, score = 200
            //   c1fe04               | sar                 esi, 4
            //   81fefeffff0f         | cmp                 esi, 0xffffffe
            //   760a                 | jbe                 0xc
            //   68????????           |                     
            //   e8????????           |                     
            //   8b4208               | mov                 eax, dword ptr [edx + 8]
            //   2bc1                 | sub                 eax, ecx

        $sequence_7 = { 898564feffff 899568feffff e8???????? 8d855cfeffff 8d5dd8 e8???????? 83858cfeffff1c }
            // n = 7, score = 200
            //   898564feffff         | mov                 dword ptr [ebp - 0x19c], eax
            //   899568feffff         | mov                 dword ptr [ebp - 0x198], edx
            //   e8????????           |                     
            //   8d855cfeffff         | lea                 eax, [ebp - 0x1a4]
            //   8d5dd8               | lea                 ebx, [ebp - 0x28]
            //   e8????????           |                     
            //   83858cfeffff1c       | add                 dword ptr [ebp - 0x174], 0x1c

        $sequence_8 = { 83781410 8b5010 7202 8b00 ff750c 8bc8 }
            // n = 6, score = 200
            //   83781410             | cmp                 dword ptr [eax + 0x14], 0x10
            //   8b5010               | mov                 edx, dword ptr [eax + 0x10]
            //   7202                 | jb                  4
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   8bc8                 | mov                 ecx, eax

        $sequence_9 = { 8bc8 e8???????? 6a01 33ff 8d7594 c645fc02 e8???????? }
            // n = 7, score = 200
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     
            //   6a01                 | push                1
            //   33ff                 | xor                 edi, edi
            //   8d7594               | lea                 esi, [ebp - 0x6c]
            //   c645fc02             | mov                 byte ptr [ebp - 4], 2
            //   e8????????           |                     

    condition:
        7 of them and filesize < 376832
}