rule win_zardoor_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.zardoor."
        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.zardoor"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 740d c7442428f0040000 e9???????? 483bca 7418 c7442428f7040000 ba2f000000 }
            // n = 7, score = 100
            //   740d                 | mov                 eax, dword ptr [esi + 0xa8]
            //   c7442428f0040000     | movaps              xmm0, xmmword ptr [esp + 0x40]
            //   e9????????           |                     
            //   483bca               | movdqa              xmmword ptr [esp + 0x50], xmm0
            //   7418                 | inc                 ecx
            //   c7442428f7040000     | movups              xmmword ptr [ecx], xmm0
            //   ba2f000000           | dec                 eax

        $sequence_1 = { e8???????? 4881c490000000 5b c3 488d0533d2feff 4889442428 4c8d4c2440 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   4881c490000000       | xor                 edx, dword ptr [ebx + 0x1c]
            //   5b                   | inc                 ecx
            //   c3                   | sub                 esp, 1
            //   488d0533d2feff       | je                  0xb42
            //   4889442428           | dec                 esp
            //   4c8d4c2440           | lea                 ebp, [0xfff56b1e]

        $sequence_2 = { e8???????? 488be8 4885c0 750e c744242873020000 448d4810 eb76 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488be8               | sub                 esp, eax
            //   4885c0               | dec                 eax
            //   750e                 | xor                 eax, esp
            //   c744242873020000     | dec                 eax
            //   448d4810             | mov                 dword ptr [esp + 0x78], eax
            //   eb76                 | inc                 esp

        $sequence_3 = { 492bc6 4803c6 488d3d3821fdff 4803c8 4c8d354e120b00 41894f1c bb01000000 }
            // n = 7, score = 100
            //   492bc6               | dec                 esp
            //   4803c6               | lea                 ecx, [0xc0f4a]
            //   488d3d3821fdff       | lea                 ecx, [edx - 0x5f]
            //   4803c8               | inc                 esp
            //   4c8d354e120b00       | lea                 eax, [edx - 0x1f]
            //   41894f1c             | mov                 dword ptr [esp + 0x20], 0x146
            //   bb01000000           | dec                 esp

        $sequence_4 = { eb05 4d8b7c24f0 4c8bc5 488bd3 e8???????? 4c8b5c2430 488bc8 }
            // n = 7, score = 100
            //   eb05                 | inc                 esp
            //   4d8b7c24f0           | mov                 eax, ebx
            //   4c8bc5               | dec                 eax
            //   488bd3               | or                  ebx, 0xffffffff
            //   e8????????           |                     
            //   4c8b5c2430           | nop                 dword ptr [eax]
            //   488bc8               | dec                 eax

        $sequence_5 = { e8???????? 488bf8 4885c0 7511 c7442420f3000000 458d4607 e9???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488bf8               | arpl                ax, si
            //   4885c0               | dec                 ebp
            //   7511                 | mov                 edi, ecx
            //   c7442420f3000000     | inc                 esp
            //   458d4607             | mov                 ebp, edx
            //   e9????????           |                     

        $sequence_6 = { 4c8b16 41f7421000001000 0f8486000000 4183ff01 755f 33db 498bcc }
            // n = 7, score = 100
            //   4c8b16               | mov                 ecx, dword ptr [ebx + 0x118]
            //   41f7421000001000     | dec                 eax
            //   0f8486000000         | lea                 edx, [0x557cc]
            //   4183ff01             | dec                 eax
            //   755f                 | mov                 ecx, dword ptr [ebx + 0x210]
            //   33db                 | dec                 eax
            //   498bcc               | lea                 edx, [0x13f021]

        $sequence_7 = { f30f6f5c1de0 660f6fd1 660fefd3 660fdbd4 660f6fc2 660fefd3 f30f7f541de0 }
            // n = 7, score = 100
            //   f30f6f5c1de0         | jne                 0x535
            //   660f6fd1             | dec                 eax
            //   660fefd3             | lea                 ecx, [0xb860d]
            //   660fdbd4             | dec                 eax
            //   660f6fc2             | lea                 ecx, [0xb87b1]
            //   660fefd3             | mov                 eax, 1
            //   f30f7f541de0         | dec                 eax

        $sequence_8 = { e8???????? 482be0 458be0 4c8bfa 488bf9 4885d2 0f84f2010000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   482be0               | mov                 eax, ebx
            //   458be0               | jmp                 0x1e21
            //   4c8bfa               | mov                 ecx, 0xd
            //   488bf9               | dec                 eax
            //   4885d2               | mov                 dword ptr [esp + 0x30], edx
            //   0f84f2010000         | dec                 ebp

        $sequence_9 = { 81c1d6c162ca 44332424 4103cd 4103f8 c1cb02 448b44240c 03f9 }
            // n = 7, score = 100
            //   81c1d6c162ca         | xor                 eax, ebx
            //   44332424             | inc                 ecx
            //   4103cd               | xor                 esi, eax
            //   4103f8               | inc                 ecx
            //   c1cb02               | xor                 eax, eax
            //   448b44240c           | mov                 ebx, ebp
            //   03f9                 | inc                 esp

    condition:
        7 of them and filesize < 4376576
}