rule win_noxplayer_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.noxplayer."
        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.noxplayer"
        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 = { 4c891f 488b4318 48894718 488b4320 488b5c2430 48894720 488d0555400300 }
            // n = 7, score = 100
            //   4c891f               | mov                 eax, dword ptr [edi]
            //   488b4318             | cmp                 ecx, eax
            //   48894718             | cmovg               ecx, eax
            //   488b4320             | mov                 dword ptr [esp + 0x34], ecx
            //   488b5c2430           | mov                 byte ptr [esp + 0x31], 0
            //   48894720             | mov                 dword ptr [esp + 0x38], 0xffffffff
            //   488d0555400300       | imul                eax, ecx

        $sequence_1 = { e9???????? e9???????? 44896b24 8b06 438904ae 8b0f 3b0e }
            // n = 7, score = 100
            //   e9????????           |                     
            //   e9????????           |                     
            //   44896b24             | dec                 eax
            //   8b06                 | inc                 esi
            //   438904ae             | dec                 eax
            //   8b0f                 | mov                 edx, dword ptr [ecx]
            //   3b0e                 | mov                 dword ptr [edx + esi*4 - 4], eax

        $sequence_2 = { 33c9 ff15???????? 48894328 ff15???????? 894334 b902020000 488d942490000000 }
            // n = 7, score = 100
            //   33c9                 | add                 esp, 4
            //   ff15????????         |                     
            //   48894328             | test                eax, eax
            //   ff15????????         |                     
            //   894334               | jne                 0x1ca4
            //   b902020000           | cmp                 dword ptr [edi], eax
            //   488d942490000000     | jne                 0x1ca4

        $sequence_3 = { 888570030000 33d2 41b803010000 488d8d71030000 e8???????? 4863d3 }
            // n = 6, score = 100
            //   888570030000         | dec                 eax
            //   33d2                 | mov                 eax, dword ptr [esi + 0x10]
            //   41b803010000         | dec                 dword ptr [eax + 0x24]
            //   488d8d71030000       | dec                 eax
            //   e8????????           |                     
            //   4863d3               | mov                 eax, dword ptr [ecx + esi*8]

        $sequence_4 = { 742f 488bcf e8???????? 488bcf 488d353e5b0200 4863d8 48c1fb05 }
            // n = 7, score = 100
            //   742f                 | cmp                 edx, eax
            //   488bcf               | jne                 0x841
            //   e8????????           |                     
            //   488bcf               | dec                 eax
            //   488d353e5b0200       | inc                 ecx
            //   4863d8               | dec                 eax
            //   48c1fb05             | add                 eax, 4

        $sequence_5 = { 4889442470 488d442470 488b00 483b4510 750f 488d4c2428 e8???????? }
            // n = 7, score = 100
            //   4889442470           | jle                 0x1ac9
            //   488d442470           | mov                 dword ptr [esi + edi*4], ebp
            //   488b00               | jl                  0x1ad0
            //   483b4510             | inc                 ecx
            //   750f                 | mov                 edi, esp
            //   488d4c2428           | sub                 edi, ecx
            //   e8????????           |                     

        $sequence_6 = { 483bd9 0f84cb000000 4c89642438 4c896c2430 0f1f8000000000 488d5318 }
            // n = 6, score = 100
            //   483bd9               | test                eax, eax
            //   0f84cb000000         | jne                 0x1d13
            //   4c89642438           | mov                 esi, edi
            //   4c896c2430           | cmp                 dword ptr [esp + 0x30], eax
            //   0f1f8000000000       | jbe                 0x1d1a
            //   488d5318             | test                eax, eax

        $sequence_7 = { e8???????? 488bfb 4803ff 4c8d2d5d030200 49837cfd0000 7404 8bc6 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488bfb               | inc                 eax
            //   4803ff               | mov                 byte ptr [ebx + 0x60], bh
            //   4c8d2d5d030200       | inc                 eax
            //   49837cfd0000         | mov                 byte ptr [ebx + 0x61], bh
            //   7404                 | inc                 eax
            //   8bc6                 | mov                 byte ptr [ebx + 0x62], bh

        $sequence_8 = { 48f7d1 488d79ff 8d4801 ff15???????? b901000000 6689843d6d750000 ff15???????? }
            // n = 7, score = 100
            //   48f7d1               | lea                 ebx, [esp + 0x2130]
            //   488d79ff             | dec                 ecx
            //   8d4801               | mov                 ebx, dword ptr [ebx + 0x18]
            //   ff15????????         |                     
            //   b901000000           | dec                 eax
            //   6689843d6d750000     | mov                 ecx, dword ptr [esi + 0x98]
            //   ff15????????         |                     

        $sequence_9 = { 746d 4c8bc3 807b1d00 754e 488b4310 80781d00 7524 }
            // n = 7, score = 100
            //   746d                 | dec                 eax
            //   4c8bc3               | mov                 eax, dword ptr [ebx]
            //   807b1d00             | mov                 dword ptr [eax + esi*4], 0xffffffff
            //   754e                 | inc                 ecx
            //   488b4310             | mov                 ecx, ecx
            //   80781d00             | inc                 ecx
            //   7524                 | sub                 ecx, eax

    condition:
        7 of them and filesize < 742400
}