rule win_hardrain_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.hardrain"
        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 = { 57 8bf9 85ed 897c2410 750a 5f 5e }
            // n = 7, score = 200
            //   57                   | push                edi
            //   8bf9                 | mov                 edi, ecx
            //   85ed                 | test                ebp, ebp
            //   897c2410             | mov                 dword ptr [esp + 0x10], edi
            //   750a                 | jne                 0xc
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_1 = { e8???????? 85c0 0f8498000000 55 8bce e8???????? }
            // n = 6, score = 200
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f8498000000         | je                  0x9e
            //   55                   | push                ebp
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     

        $sequence_2 = { 5e 81c418010000 c20400 83ec0c }
            // n = 4, score = 200
            //   5e                   | pop                 esi
            //   81c418010000         | add                 esp, 0x118
            //   c20400               | ret                 4
            //   83ec0c               | sub                 esp, 0xc

        $sequence_3 = { 40 668b00 50 ff15???????? 6689460c }
            // n = 5, score = 200
            //   40                   | inc                 eax
            //   668b00               | mov                 ax, word ptr [eax]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   6689460c             | mov                 word ptr [esi + 0xc], ax

        $sequence_4 = { 8bce e8???????? 85c0 0f84b0000000 55 8bce e8???????? }
            // n = 7, score = 200
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   0f84b0000000         | je                  0xb6
            //   55                   | push                ebp
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     

        $sequence_5 = { 85ff 897108 7e21 53 8bdf 8b790c }
            // n = 6, score = 200
            //   85ff                 | test                edi, edi
            //   897108               | mov                 dword ptr [ecx + 8], esi
            //   7e21                 | jle                 0x23
            //   53                   | push                ebx
            //   8bdf                 | mov                 ebx, edi
            //   8b790c               | mov                 edi, dword ptr [ecx + 0xc]

        $sequence_6 = { 89442418 894c2414 e8???????? 83c410 85c0 740a }
            // n = 6, score = 200
            //   89442418             | mov                 dword ptr [esp + 0x18], eax
            //   894c2414             | mov                 dword ptr [esp + 0x14], ecx
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   85c0                 | test                eax, eax
            //   740a                 | je                  0xc

        $sequence_7 = { 897104 5e 7428 8bc2 d1e8 33c2 c1e804 }
            // n = 7, score = 200
            //   897104               | mov                 dword ptr [ecx + 4], esi
            //   5e                   | pop                 esi
            //   7428                 | je                  0x2a
            //   8bc2                 | mov                 eax, edx
            //   d1e8                 | shr                 eax, 1
            //   33c2                 | xor                 eax, edx
            //   c1e804               | shr                 eax, 4

        $sequence_8 = { 894c242c e8???????? 83c414 85c0 740a b802000000 5e }
            // n = 7, score = 200
            //   894c242c             | mov                 dword ptr [esp + 0x2c], ecx
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   85c0                 | test                eax, eax
            //   740a                 | je                  0xc
            //   b802000000           | mov                 eax, 2
            //   5e                   | pop                 esi

        $sequence_9 = { 8b4c2404 68b4000000 6a01 680c010000 50 51 e8???????? }
            // n = 7, score = 200
            //   8b4c2404             | mov                 ecx, dword ptr [esp + 4]
            //   68b4000000           | push                0xb4
            //   6a01                 | push                1
            //   680c010000           | push                0x10c
            //   50                   | push                eax
            //   51                   | push                ecx
            //   e8????????           |                     

    condition:
        7 of them and filesize < 368640
}