rule win_rifdoor_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.rifdoor"
        malpedia_rule_date = "20200529"
        malpedia_hash = "92c362319514e5a6da26204961446caa3a8b32a8"
        malpedia_version = "20200529"
        malpedia_license = "CC BY-NC-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 = { 8d542404 52 894808 ff15???????? 6804010000 }
            // n = 5, score = 200
            //   8d542404             | lea                 edx, [esp + 4]
            //   52                   | push                edx
            //   894808               | mov                 dword ptr [eax + 8], ecx
            //   ff15????????         |                     
            //   6804010000           | push                0x104

        $sequence_1 = { 02c9 880c30 eb26 8bd1 }
            // n = 4, score = 200
            //   02c9                 | add                 cl, cl
            //   880c30               | mov                 byte ptr [eax + esi], cl
            //   eb26                 | jmp                 0x28
            //   8bd1                 | mov                 edx, ecx

        $sequence_2 = { 8b442414 50 57 e8???????? 83c40c }
            // n = 5, score = 200
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_3 = { a3???????? 391d???????? 745c 391d???????? 7454 }
            // n = 5, score = 200
            //   a3????????           |                     
            //   391d????????         |                     
            //   745c                 | je                  0x5e
            //   391d????????         |                     
            //   7454                 | je                  0x56

        $sequence_4 = { 8bf0 51 56 e8???????? 83c40c 56 ff15???????? }
            // n = 7, score = 200
            //   8bf0                 | mov                 esi, eax
            //   51                   | push                ecx
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   56                   | push                esi
            //   ff15????????         |                     

        $sequence_5 = { 55 8bf8 8b06 8b5050 53 56 ffd2 }
            // n = 7, score = 200
            //   55                   | push                ebp
            //   8bf8                 | mov                 edi, eax
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   8b5050               | mov                 edx, dword ptr [eax + 0x50]
            //   53                   | push                ebx
            //   56                   | push                esi
            //   ffd2                 | call                edx

        $sequence_6 = { 8b04bd605d4100 0500080000 3bf0 0f8397000000 f6460401 755c 837e0800 }
            // n = 7, score = 200
            //   8b04bd605d4100       | mov                 eax, dword ptr [edi*4 + 0x415d60]
            //   0500080000           | add                 eax, 0x800
            //   3bf0                 | cmp                 esi, eax
            //   0f8397000000         | jae                 0x9d
            //   f6460401             | test                byte ptr [esi + 4], 1
            //   755c                 | jne                 0x5e
            //   837e0800             | cmp                 dword ptr [esi + 8], 0

        $sequence_7 = { 32db 3bc1 7d0e 885c301c }
            // n = 4, score = 200
            //   32db                 | xor                 bl, bl
            //   3bc1                 | cmp                 eax, ecx
            //   7d0e                 | jge                 0x10
            //   885c301c             | mov                 byte ptr [eax + esi + 0x1c], bl

        $sequence_8 = { 897dfc 897dd8 83ff40 0f8d3c010000 8b34bd605d4100 85f6 0f84ba000000 }
            // n = 7, score = 200
            //   897dfc               | mov                 dword ptr [ebp - 4], edi
            //   897dd8               | mov                 dword ptr [ebp - 0x28], edi
            //   83ff40               | cmp                 edi, 0x40
            //   0f8d3c010000         | jge                 0x142
            //   8b34bd605d4100       | mov                 esi, dword ptr [edi*4 + 0x415d60]
            //   85f6                 | test                esi, esi
            //   0f84ba000000         | je                  0xc0

        $sequence_9 = { 8bff 56 57 33f6 bf???????? 833cf55440410001 751e }
            // n = 7, score = 200
            //   8bff                 | mov                 edi, edi
            //   56                   | push                esi
            //   57                   | push                edi
            //   33f6                 | xor                 esi, esi
            //   bf????????           |                     
            //   833cf55440410001     | cmp                 dword ptr [esi*8 + 0x414054], 1
            //   751e                 | jne                 0x20

    condition:
        7 of them and filesize < 212992
}