rule win_htran_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-05-30"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.htran"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        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 / approach 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 = { 8b942430510000 55 52 68???????? e8???????? }
            // n = 5, score = 200
            //   8b942430510000       | mov                 edx, dword ptr [esp + 0x5130]
            //   55                   | push                ebp
            //   52                   | push                edx
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_1 = { 8b4c2462 51 ff15???????? 25ffff0000 89442420 8b4c2414 }
            // n = 6, score = 200
            //   8b4c2462             | mov                 ecx, dword ptr [esp + 0x62]
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   25ffff0000           | and                 eax, 0xffff
            //   89442420             | mov                 dword ptr [esp + 0x20], eax
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]

        $sequence_2 = { 8b4604 83c604 85c0 75cc 85db 7456 }
            // n = 6, score = 200
            //   8b4604               | mov                 eax, dword ptr [esi + 4]
            //   83c604               | add                 esi, 4
            //   85c0                 | test                eax, eax
            //   75cc                 | jne                 0xffffffce
            //   85db                 | test                ebx, ebx
            //   7456                 | je                  0x58

        $sequence_3 = { 0f8e6cfeffff 8bcd 8db434eca20000 8bc1 }
            // n = 4, score = 200
            //   0f8e6cfeffff         | jle                 0xfffffe72
            //   8bcd                 | mov                 ecx, ebp
            //   8db434eca20000       | lea                 esi, [esp + esi + 0xa2ec]
            //   8bc1                 | mov                 eax, ecx

        $sequence_4 = { 50 55 e8???????? 83c40c eb0a 50 }
            // n = 6, score = 200
            //   50                   | push                eax
            //   55                   | push                ebp
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   eb0a                 | jmp                 0xc
            //   50                   | push                eax

        $sequence_5 = { 72f4 3bc2 7512 899c24f0010000 c78424e801000002000000 8d442458 8d8c24e4000000 }
            // n = 7, score = 200
            //   72f4                 | jb                  0xfffffff6
            //   3bc2                 | cmp                 eax, edx
            //   7512                 | jne                 0x14
            //   899c24f0010000       | mov                 dword ptr [esp + 0x1f0], ebx
            //   c78424e801000002000000     | mov    dword ptr [esp + 0x1e8], 2
            //   8d442458             | lea                 eax, [esp + 0x58]
            //   8d8c24e4000000       | lea                 ecx, [esp + 0xe4]

        $sequence_6 = { 68???????? e8???????? 83c404 8d442420 8d4c2418 895c2418 50 }
            // n = 7, score = 200
            //   68????????           |                     
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8d442420             | lea                 eax, [esp + 0x20]
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   895c2418             | mov                 dword ptr [esp + 0x18], ebx
            //   50                   | push                eax

        $sequence_7 = { 8d542438 51 52 50 68???????? 03f0 2be8 }
            // n = 7, score = 200
            //   8d542438             | lea                 edx, [esp + 0x38]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   50                   | push                eax
            //   68????????           |                     
            //   03f0                 | add                 esi, eax
            //   2be8                 | sub                 ebp, eax

        $sequence_8 = { e8???????? a1???????? 50 e8???????? 83c40c 68???????? e8???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   a1????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_9 = { e8???????? 8be8 8b4710 6a28 }
            // n = 4, score = 200
            //   e8????????           |                     
            //   8be8                 | mov                 ebp, eax
            //   8b4710               | mov                 eax, dword ptr [edi + 0x10]
            //   6a28                 | push                0x28

    condition:
        7 of them and filesize < 114688
}