rule win_shapeshift_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.shapeshift"
        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 = { 884b02 0fbf05???????? 0fb680589a4100 884303 }
            // n = 4, score = 100
            //   884b02               | mov                 byte ptr [ebx + 2], cl
            //   0fbf05????????       |                     
            //   0fb680589a4100       | movzx               eax, byte ptr [eax + 0x419a58]
            //   884303               | mov                 byte ptr [ebx + 3], al

        $sequence_1 = { 8bd8 8985e0fdffff 8995f0fdffff e8???????? 0bc2 8bb5f0fdffff }
            // n = 6, score = 100
            //   8bd8                 | mov                 ebx, eax
            //   8985e0fdffff         | mov                 dword ptr [ebp - 0x220], eax
            //   8995f0fdffff         | mov                 dword ptr [ebp - 0x210], edx
            //   e8????????           |                     
            //   0bc2                 | or                  eax, edx
            //   8bb5f0fdffff         | mov                 esi, dword ptr [ebp - 0x210]

        $sequence_2 = { 7408 84820f9b4100 7528 d92d???????? 891424 c744240400000000 }
            // n = 6, score = 100
            //   7408                 | je                  0xa
            //   84820f9b4100         | test                byte ptr [edx + 0x419b0f], al
            //   7528                 | jne                 0x2a
            //   d92d????????         |                     
            //   891424               | mov                 dword ptr [esp], edx
            //   c744240400000000     | mov                 dword ptr [esp + 4], 0

        $sequence_3 = { 8955fc 894df8 e8???????? 6a0a }
            // n = 4, score = 100
            //   8955fc               | mov                 dword ptr [ebp - 4], edx
            //   894df8               | mov                 dword ptr [ebp - 8], ecx
            //   e8????????           |                     
            //   6a0a                 | push                0xa

        $sequence_4 = { 8d411a 50 e8???????? 8bf0 }
            // n = 4, score = 100
            //   8d411a               | lea                 eax, [ecx + 0x1a]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax

        $sequence_5 = { 0f84c6000000 8bd6 8bcb e8???????? 8b9dbcfdffff }
            // n = 5, score = 100
            //   0f84c6000000         | je                  0xcc
            //   8bd6                 | mov                 edx, esi
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   8b9dbcfdffff         | mov                 ebx, dword ptr [ebp - 0x244]

        $sequence_6 = { c3 56 ff15???????? 33c0 5f 5e 5b }
            // n = 7, score = 100
            //   c3                   | ret                 
            //   56                   | push                esi
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx

        $sequence_7 = { 8bf0 6a0c 7550 e8???????? 83c404 }
            // n = 5, score = 100
            //   8bf0                 | mov                 esi, eax
            //   6a0c                 | push                0xc
            //   7550                 | jne                 0x52
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

    condition:
        7 of them and filesize < 303104
}