rule win_sidewinder_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.sidewinder."
        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.sidewinder"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 6888000000 68???????? ffb520ffffff ffb51cffffff e8???????? 8985b4feffff eb07 }
            // n = 7, score = 200
            //   6888000000           | push                0x88
            //   68????????           |                     
            //   ffb520ffffff         | push                dword ptr [ebp - 0xe0]
            //   ffb51cffffff         | push                dword ptr [ebp - 0xe4]
            //   e8????????           |                     
            //   8985b4feffff         | mov                 dword ptr [ebp - 0x14c], eax
            //   eb07                 | jmp                 9

        $sequence_1 = { e8???????? 50 8d45e8 50 e8???????? 898558ffffff c745b004000280 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   50                   | push                eax
            //   8d45e8               | lea                 eax, [ebp - 0x18]
            //   50                   | push                eax
            //   e8????????           |                     
            //   898558ffffff         | mov                 dword ptr [ebp - 0xa8], eax
            //   c745b004000280       | mov                 dword ptr [ebp - 0x50], 0x80020004

        $sequence_2 = { 66f7d0 668945d4 8d4de8 e8???????? 0fbf45d4 85c0 742f }
            // n = 7, score = 200
            //   66f7d0               | not                 ax
            //   668945d4             | mov                 word ptr [ebp - 0x2c], ax
            //   8d4de8               | lea                 ecx, [ebp - 0x18]
            //   e8????????           |                     
            //   0fbf45d4             | movsx               eax, word ptr [ebp - 0x2c]
            //   85c0                 | test                eax, eax
            //   742f                 | je                  0x31

        $sequence_3 = { 837db400 7d1a 6a60 68???????? ff75cc ff75b4 e8???????? }
            // n = 7, score = 200
            //   837db400             | cmp                 dword ptr [ebp - 0x4c], 0
            //   7d1a                 | jge                 0x1c
            //   6a60                 | push                0x60
            //   68????????           |                     
            //   ff75cc               | push                dword ptr [ebp - 0x34]
            //   ff75b4               | push                dword ptr [ebp - 0x4c]
            //   e8????????           |                     

        $sequence_4 = { 7519 8d45e0 50 68???????? e8???????? 8d45e0 89852cfeffff }
            // n = 7, score = 200
            //   7519                 | jne                 0x1b
            //   8d45e0               | lea                 eax, [ebp - 0x20]
            //   50                   | push                eax
            //   68????????           |                     
            //   e8????????           |                     
            //   8d45e0               | lea                 eax, [ebp - 0x20]
            //   89852cfeffff         | mov                 dword ptr [ebp - 0x1d4], eax

        $sequence_5 = { ff5048 dbe2 898538ffffff 83bd38ffffff00 7d20 6a48 68???????? }
            // n = 7, score = 200
            //   ff5048               | call                dword ptr [eax + 0x48]
            //   dbe2                 | fnclex              
            //   898538ffffff         | mov                 dword ptr [ebp - 0xc8], eax
            //   83bd38ffffff00       | cmp                 dword ptr [ebp - 0xc8], 0
            //   7d20                 | jge                 0x22
            //   6a48                 | push                0x48
            //   68????????           |                     

        $sequence_6 = { e8???????? e8???????? 8d45e0 50 8d45e4 50 8d45e8 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   e8????????           |                     
            //   8d45e0               | lea                 eax, [ebp - 0x20]
            //   50                   | push                eax
            //   8d45e4               | lea                 eax, [ebp - 0x1c]
            //   50                   | push                eax
            //   8d45e8               | lea                 eax, [ebp - 0x18]

        $sequence_7 = { eb04 8365bc00 ff35???????? 6a01 e8???????? 8bc8 e8???????? }
            // n = 7, score = 200
            //   eb04                 | jmp                 6
            //   8365bc00             | and                 dword ptr [ebp - 0x44], 0
            //   ff35????????         |                     
            //   6a01                 | push                1
            //   e8????????           |                     
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     

        $sequence_8 = { 7519 8d45d8 50 68???????? e8???????? 8d45d8 898534ffffff }
            // n = 7, score = 200
            //   7519                 | jne                 0x1b
            //   8d45d8               | lea                 eax, [ebp - 0x28]
            //   50                   | push                eax
            //   68????????           |                     
            //   e8????????           |                     
            //   8d45d8               | lea                 eax, [ebp - 0x28]
            //   898534ffffff         | mov                 dword ptr [ebp - 0xcc], eax

        $sequence_9 = { 50 8d8560ffffff 50 8b45ec 8b00 ff75ec ff502c }
            // n = 7, score = 200
            //   50                   | push                eax
            //   8d8560ffffff         | lea                 eax, [ebp - 0xa0]
            //   50                   | push                eax
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   ff502c               | call                dword ptr [eax + 0x2c]

    condition:
        7 of them and filesize < 679936
}