rule win_sidewinder_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        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 = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { e8???????? 898510ffffff eb07 83a510ffffff00 8d4dc4 e8???????? e9???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   898510ffffff         | mov                 dword ptr [ebp - 0xf0], eax
            //   eb07                 | jmp                 9
            //   83a510ffffff00       | and                 dword ptr [ebp - 0xf0], 0
            //   8d4dc4               | lea                 ecx, dword ptr [ebp - 0x3c]
            //   e8????????           |                     
            //   e9????????           |                     

        $sequence_1 = { 51 51 68???????? 64a100000000 50 64892500000000 6a28 }
            // n = 7, score = 200
            //   51                   | push                ecx
            //   51                   | push                ecx
            //   68????????           |                     
            //   64a100000000         | mov                 eax, dword ptr fs:[0]
            //   50                   | push                eax
            //   64892500000000       | mov                 dword ptr fs:[0], esp
            //   6a28                 | push                0x28

        $sequence_2 = { 6a78 68???????? ff75e4 ff75d0 e8???????? 89852cffffff eb07 }
            // n = 7, score = 200
            //   6a78                 | push                0x78
            //   68????????           |                     
            //   ff75e4               | push                dword ptr [ebp - 0x1c]
            //   ff75d0               | push                dword ptr [ebp - 0x30]
            //   e8????????           |                     
            //   89852cffffff         | mov                 dword ptr [ebp - 0xd4], eax
            //   eb07                 | jmp                 9

        $sequence_3 = { 89458c eb04 83658c00 8d45d4 50 8b45e8 }
            // n = 6, score = 200
            //   89458c               | mov                 dword ptr [ebp - 0x74], eax
            //   eb04                 | jmp                 6
            //   83658c00             | and                 dword ptr [ebp - 0x74], 0
            //   8d45d4               | lea                 eax, dword ptr [ebp - 0x2c]
            //   50                   | push                eax
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]

        $sequence_4 = { 83a59cfdffff00 ff75d0 e8???????? 8bd0 8d4ddc e8???????? 8d4dd0 }
            // n = 7, score = 200
            //   83a59cfdffff00       | and                 dword ptr [ebp - 0x264], 0
            //   ff75d0               | push                dword ptr [ebp - 0x30]
            //   e8????????           |                     
            //   8bd0                 | mov                 edx, eax
            //   8d4ddc               | lea                 ecx, dword ptr [ebp - 0x24]
            //   e8????????           |                     
            //   8d4dd0               | lea                 ecx, dword ptr [ebp - 0x30]

        $sequence_5 = { 8bec 83ec14 68???????? 64a100000000 50 64892500000000 b8b8000000 }
            // n = 7, score = 200
            //   8bec                 | mov                 ebp, esp
            //   83ec14               | sub                 esp, 0x14
            //   68????????           |                     
            //   64a100000000         | mov                 eax, dword ptr fs:[0]
            //   50                   | push                eax
            //   64892500000000       | mov                 dword ptr fs:[0], esp
            //   b8b8000000           | mov                 eax, 0xb8

        $sequence_6 = { 7d23 6890000000 68???????? ffb550ffffff ffb54cffffff e8???????? 89859cfeffff }
            // n = 7, score = 200
            //   7d23                 | jge                 0x25
            //   6890000000           | push                0x90
            //   68????????           |                     
            //   ffb550ffffff         | push                dword ptr [ebp - 0xb0]
            //   ffb54cffffff         | push                dword ptr [ebp - 0xb4]
            //   e8????????           |                     
            //   89859cfeffff         | mov                 dword ptr [ebp - 0x164], eax

        $sequence_7 = { 8d45d8 50 8b45c4 8b00 ff75c4 ff5024 dbe2 }
            // n = 7, score = 200
            //   8d45d8               | lea                 eax, dword ptr [ebp - 0x28]
            //   50                   | push                eax
            //   8b45c4               | mov                 eax, dword ptr [ebp - 0x3c]
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   ff75c4               | push                dword ptr [ebp - 0x3c]
            //   ff5024               | call                dword ptr [eax + 0x24]
            //   dbe2                 | fnclex              

        $sequence_8 = { 8b4508 6683603400 8b4508 8b00 ff7508 ff5044 e9???????? }
            // n = 7, score = 200
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   6683603400           | and                 word ptr [eax + 0x34], 0
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff5044               | call                dword ptr [eax + 0x44]
            //   e9????????           |                     

        $sequence_9 = { eb07 83a560ffffff00 8d4dcc e8???????? 8d4dbc e8???????? e9???????? }
            // n = 7, score = 200
            //   eb07                 | jmp                 9
            //   83a560ffffff00       | and                 dword ptr [ebp - 0xa0], 0
            //   8d4dcc               | lea                 ecx, dword ptr [ebp - 0x34]
            //   e8????????           |                     
            //   8d4dbc               | lea                 ecx, dword ptr [ebp - 0x44]
            //   e8????????           |                     
            //   e9????????           |                     

    condition:
        7 of them and filesize < 679936
}