rule win_tinymet_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.tinymet"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 8d45e8 50 e8???????? 83c410 b80033a084 385d10 be00022084 }
            // n = 7, score = 100
            //   8d45e8               | lea                 eax, [ebp - 0x18]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   b80033a084           | mov                 eax, 0x84a03300
            //   385d10               | cmp                 byte ptr [ebp + 0x10], bl
            //   be00022084           | mov                 esi, 0x84200200

        $sequence_1 = { 6a5c ff30 e8???????? 8bf0 59 59 85f6 }
            // n = 7, score = 100
            //   6a5c                 | push                0x5c
            //   ff30                 | push                dword ptr [eax]
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   85f6                 | test                esi, esi

        $sequence_2 = { b80033a084 385d10 be00022084 0f45f0 53 53 53 }
            // n = 7, score = 100
            //   b80033a084           | mov                 eax, 0x84a03300
            //   385d10               | cmp                 byte ptr [ebp + 0x10], bl
            //   be00022084           | mov                 esi, 0x84200200
            //   0f45f0               | cmovne              esi, eax
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   53                   | push                ebx

        $sequence_3 = { eb7d 53 8b1d???????? 6a04 68???????? 56 }
            // n = 6, score = 100
            //   eb7d                 | jmp                 0x7f
            //   53                   | push                ebx
            //   8b1d????????         |                     
            //   6a04                 | push                4
            //   68????????           |                     
            //   56                   | push                esi

        $sequence_4 = { 75e7 a1???????? 5f 5e }
            // n = 4, score = 100
            //   75e7                 | jne                 0xffffffe9
            //   a1????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_5 = { 57 8bf3 e8???????? 59 85c0 7412 }
            // n = 6, score = 100
            //   57                   | push                edi
            //   8bf3                 | mov                 esi, ebx
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   85c0                 | test                eax, eax
            //   7412                 | je                  0x14

        $sequence_6 = { 50 ff7508 68???????? e8???????? 83c40c 6aff }
            // n = 6, score = 100
            //   50                   | push                eax
            //   ff7508               | push                dword ptr [ebp + 8]
            //   68????????           |                     
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6aff                 | push                -1

        $sequence_7 = { 6a10 50 56 385d10 7448 ff15???????? }
            // n = 6, score = 100
            //   6a10                 | push                0x10
            //   50                   | push                eax
            //   56                   | push                esi
            //   385d10               | cmp                 byte ptr [ebp + 0x10], bl
            //   7448                 | je                  0x4a
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 57344
}