rule win_doorme_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.doorme."
        info = "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.doorme"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { 4d8d4020 498d48e8 0f1103 410f1048d8 0f114b10 4d8948d8 4883c320 }
            // n = 7, score = 100
            //   4d8d4020             | dec                 eax
            //   498d48e8             | mov                 eax, dword ptr [ebx + 8]
            //   0f1103               | cmp                 dword ptr [eax], 0
            //   410f1048d8           | jne                 0xb2d
            //   0f114b10             | dec                 eax
            //   4d8948d8             | lea                 edx, [0x1227c]
            //   4883c320             | inc                 esp

        $sequence_1 = { 4c8d4def 4533c0 488b4dc7 ff15???????? 85c0 0f849e000000 0f104517 }
            // n = 7, score = 100
            //   4c8d4def             | dec                 eax
            //   4533c0               | lea                 edx, [0x1bf02]
            //   488b4dc7             | dec                 eax
            //   ff15????????         |                     
            //   85c0                 | mov                 ecx, ebx
            //   0f849e000000         | dec                 eax
            //   0f104517             | lea                 edx, [0x1bf0e]

        $sequence_2 = { 66458927 488907 66443920 7417 4c8bc7 418d542416 488d0d6f3d0100 }
            // n = 7, score = 100
            //   66458927             | mov                 eax, dword ptr [ebp - 0x60]
            //   488907               | dec                 eax
            //   66443920             | arpl                word ptr [eax + 4], cx
            //   7417                 | dec                 esp
            //   4c8bc7               | lea                 esp, [0x33f5f]
            //   418d542416           | dec                 esp
            //   488d0d6f3d0100       | mov                 dword ptr [ebp + ecx - 0x60], esp

        $sequence_3 = { 488d1517500100 488bcb e8???????? 4c8bf0 4885c0 0f8437010000 }
            // n = 6, score = 100
            //   488d1517500100       | dec                 eax
            //   488bcb               | sub                 esp, 0x20
            //   e8????????           |                     
            //   4c8bf0               | xor                 ebx, ebx
            //   4885c0               | dec                 eax
            //   0f8437010000         | lea                 edx, [0x2cb2d]

        $sequence_4 = { e8???????? e9???????? 4883bdf802000010 480f4385e0020000 c60000 4889b510030000 488d8500030000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   e9????????           |                     
            //   4883bdf802000010     | jne                 0xc17
            //   480f4385e0020000     | dec                 eax
            //   c60000               | inc                 edi
            //   4889b510030000       | cmp                 byte ptr [edi], 0x20
            //   488d8500030000       | je                  0xb98

        $sequence_5 = { 488d15d9f10200 e8???????? 85c0 7421 ffc5 4883c614 3b2f }
            // n = 7, score = 100
            //   488d15d9f10200       | dec                 eax
            //   e8????????           |                     
            //   85c0                 | add                 esp, 0x20
            //   7421                 | dec                 eax
            //   ffc5                 | add                 esp, 0x20
            //   4883c614             | pop                 edi
            //   3b2f                 | ret                 

        $sequence_6 = { 4c398598000000 4c0f428598000000 488d9588000000 4883bda000000010 480f439588000000 488d4d68 }
            // n = 6, score = 100
            //   4c398598000000       | sub                 edi, ecx
            //   4c0f428598000000     | dec                 eax
            //   488d9588000000       | lea                 eax, [edi - 8]
            //   4883bda000000010     | dec                 eax
            //   480f439588000000     | cmp                 eax, 0x1f
            //   488d4d68             | ja                  0xf5d

        $sequence_7 = { 488d4c2450 e8???????? 488bd0 488d8de0020000 e8???????? 488d95c8000000 }
            // n = 6, score = 100
            //   488d4c2450           | lea                 eax, [0x33cb0]
            //   e8????????           |                     
            //   488bd0               | dec                 eax
            //   488d8de0020000       | mov                 dword ptr [ebp + ecx - 0x60], eax
            //   e8????????           |                     
            //   488d95c8000000       | dec                 eax

        $sequence_8 = { 33db 488d1585020300 4533c0 488d0c9b 488d0cca baa00f0000 e8???????? }
            // n = 7, score = 100
            //   33db                 | xor                 ecx, esp
            //   488d1585020300       | dec                 esp
            //   4533c0               | lea                 ebx, [esp + 0x6b0]
            //   488d0c9b             | mov                 byte ptr [edi], 0
            //   488d0cca             | dec                 eax
            //   baa00f0000           | mov                 ecx, dword ptr [esp + 0x68]
            //   e8????????           |                     

        $sequence_9 = { 49c7c0ffffffff 660f1f440000 49ffc0 42803c0200 75f6 488d4c2430 e8???????? }
            // n = 7, score = 100
            //   49c7c0ffffffff       | lea                 edx, [0x1868f]
            //   660f1f440000         | mov                 ecx, 3
            //   49ffc0               | dec                 esp
            //   42803c0200           | lea                 eax, [0x1caab]
            //   75f6                 | dec                 eax
            //   488d4c2430           | mov                 ebx, edx
            //   e8????????           |                     

    condition:
        7 of them and filesize < 580608
}