rule win_rifdoor_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.rifdoor"
        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 = { 8d89244b4100 5a 668b31 41 }
            // n = 4, score = 200
            //   8d89244b4100         | lea                 ecx, [ecx + 0x414b24]
            //   5a                   | pop                 edx
            //   668b31               | mov                 si, word ptr [ecx]
            //   41                   | inc                 ecx

        $sequence_1 = { 75b4 8b37 8b4704 8b4f08 }
            // n = 4, score = 200
            //   75b4                 | jne                 0xffffffb6
            //   8b37                 | mov                 esi, dword ptr [edi]
            //   8b4704               | mov                 eax, dword ptr [edi + 4]
            //   8b4f08               | mov                 ecx, dword ptr [edi + 8]

        $sequence_2 = { bf???????? 833cf55440410001 751e 8d04f550404100 }
            // n = 4, score = 200
            //   bf????????           |                     
            //   833cf55440410001     | cmp                 dword ptr [esi*8 + 0x414054], 1
            //   751e                 | jne                 0x20
            //   8d04f550404100       | lea                 eax, [esi*8 + 0x414050]

        $sequence_3 = { b9???????? e8???????? 8b4c2414 8be8 }
            // n = 4, score = 200
            //   b9????????           |                     
            //   e8????????           |                     
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]
            //   8be8                 | mov                 ebp, eax

        $sequence_4 = { ffd7 53 8be8 ffd7 8b5c2410 }
            // n = 5, score = 200
            //   ffd7                 | call                edi
            //   53                   | push                ebx
            //   8be8                 | mov                 ebp, eax
            //   ffd7                 | call                edi
            //   8b5c2410             | mov                 ebx, dword ptr [esp + 0x10]

        $sequence_5 = { 881e 8ad8 32d9 22da 8ad0 }
            // n = 5, score = 200
            //   881e                 | mov                 byte ptr [esi], bl
            //   8ad8                 | mov                 bl, al
            //   32d9                 | xor                 bl, cl
            //   22da                 | and                 bl, dl
            //   8ad0                 | mov                 dl, al

        $sequence_6 = { 56 89742414 ff15???????? 33c0 a3???????? }
            // n = 5, score = 200
            //   56                   | push                esi
            //   89742414             | mov                 dword ptr [esp + 0x14], esi
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   a3????????           |                     

        $sequence_7 = { 8bf8 52 57 e8???????? 83c40c 57 ff15???????? }
            // n = 7, score = 200
            //   8bf8                 | mov                 edi, eax
            //   52                   | push                edx
            //   57                   | push                edi
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   57                   | push                edi
            //   ff15????????         |                     

        $sequence_8 = { 897c2474 897c2478 e8???????? 83c404 397c2474 7513 }
            // n = 6, score = 200
            //   897c2474             | mov                 dword ptr [esp + 0x74], edi
            //   897c2478             | mov                 dword ptr [esp + 0x78], edi
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   397c2474             | cmp                 dword ptr [esp + 0x74], edi
            //   7513                 | jne                 0x15

        $sequence_9 = { 8d442438 b932000000 33d2 50 }
            // n = 4, score = 200
            //   8d442438             | lea                 eax, [esp + 0x38]
            //   b932000000           | mov                 ecx, 0x32
            //   33d2                 | xor                 edx, edx
            //   50                   | push                eax

    condition:
        7 of them and filesize < 212992
}