rule win_isspace_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.isspace"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 8bc6 46 83f805 7c09 }
            // n = 4, score = 200
            //   8bc6                 | mov                 eax, esi
            //   46                   | inc                 esi
            //   83f805               | cmp                 eax, 5
            //   7c09                 | jl                  0xb

        $sequence_1 = { e8???????? 85c0 7409 83f86f }
            // n = 4, score = 200
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7409                 | je                  0xb
            //   83f86f               | cmp                 eax, 0x6f

        $sequence_2 = { 6a00 6a23 eb04 6a00 }
            // n = 4, score = 200
            //   6a00                 | push                0
            //   6a23                 | push                0x23
            //   eb04                 | jmp                 6
            //   6a00                 | push                0

        $sequence_3 = { 64a100000000 50 83ec08 b898a30000 e8???????? a1???????? 3145f8 }
            // n = 7, score = 200
            //   64a100000000         | mov                 eax, dword ptr fs:[0]
            //   50                   | push                eax
            //   83ec08               | sub                 esp, 8
            //   b898a30000           | mov                 eax, 0xa398
            //   e8????????           |                     
            //   a1????????           |                     
            //   3145f8               | xor                 dword ptr [ebp - 8], eax

        $sequence_4 = { 8bec 6afe 68???????? 68???????? 64a100000000 50 81eca8000000 }
            // n = 7, score = 200
            //   8bec                 | mov                 ebp, esp
            //   6afe                 | push                -2
            //   68????????           |                     
            //   68????????           |                     
            //   64a100000000         | mov                 eax, dword ptr fs:[0]
            //   50                   | push                eax
            //   81eca8000000         | sub                 esp, 0xa8

        $sequence_5 = { 83f805 7410 6888130000 ff15???????? e9???????? }
            // n = 5, score = 200
            //   83f805               | cmp                 eax, 5
            //   7410                 | je                  0x12
            //   6888130000           | push                0x1388
            //   ff15????????         |                     
            //   e9????????           |                     

        $sequence_6 = { 85c0 7411 68???????? 50 ff15???????? a3???????? 6a00 }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   7411                 | je                  0x13
            //   68????????           |                     
            //   50                   | push                eax
            //   ff15????????         |                     
            //   a3????????           |                     
            //   6a00                 | push                0

        $sequence_7 = { 56 6800010000 8bf1 6a00 56 e8???????? 6800010000 }
            // n = 7, score = 200
            //   56                   | push                esi
            //   6800010000           | push                0x100
            //   8bf1                 | mov                 esi, ecx
            //   6a00                 | push                0
            //   56                   | push                esi
            //   e8????????           |                     
            //   6800010000           | push                0x100

    condition:
        7 of them and filesize < 434176
}