rule win_lightneuron_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.lightneuron"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 498bc7 0f1f4000 8b7808 488b10 498bcc 443bf7 7d27 }
            // n = 7, score = 100
            //   498bc7               | cmp                 eax, edx
            //   0f1f4000             | jl                  0x4bb
            //   8b7808               | inc                 esp
            //   488b10               | mov                 dword ptr [ebp], ebx
            //   498bcc               | mov                 eax, ebx
            //   443bf7               | jmp                 0x4d5
            //   7d27                 | dec                 eax

        $sequence_1 = { eb4b 488bcb e8???????? 83f801 753e 8b834c3f0000 4d8bc4 }
            // n = 7, score = 100
            //   eb4b                 | movzx               eax, al
            //   488bcb               | inc                 edx
            //   e8????????           |                     
            //   83f801               | movzx               eax, byte ptr [eax + 0x3a540]
            //   753e                 | shl                 ebx, 8
            //   8b834c3f0000         | movzx               ecx, al
            //   4d8bc4               | inc                 edx

        $sequence_2 = { 7509 4983e804 482bca 75f1 488d442460 833800 750a }
            // n = 7, score = 100
            //   7509                 | test                eax, eax
            //   4983e804             | jne                 0x1f0e
            //   482bca               | dec                 ebp
            //   75f1                 | mov                 edi, ecx
            //   488d442460           | or                  ebx, eax
            //   833800               | inc                 ecx
            //   750a                 | movzx               eax, byte ptr [eax]

        $sequence_3 = { 0f1f00 41833c9c00 7506 4883eb01 75f3 8b442460 488d5301 }
            // n = 7, score = 100
            //   0f1f00               | mov                 ebx, dword ptr [esi + edx*4 + 0x3f5c0]
            //   41833c9c00           | shr                 eax, 0x10
            //   7506                 | movzx               ecx, al
            //   4883eb01             | mov                 eax, edi
            //   75f3                 | inc                 ebp
            //   8b442460             | xor                 ebx, dword ptr [esi + ecx*4 + 0x3f9c0]
            //   488d5301             | inc                 ecx

        $sequence_4 = { 41884101 75d5 33c0 488b5c2430 488b6c2438 488b742440 488b7c2448 }
            // n = 7, score = 100
            //   41884101             | dec                 eax
            //   75d5                 | mov                 dword ptr [esp + 0x28], ebx
            //   33c0                 | mov                 dword ptr [esp + 0x20], eax
            //   488b5c2430           | inc                 ebp
            //   488b6c2438           | xor                 eax, eax
            //   488b742440           | mov                 edx, 0xba
            //   488b7c2448           | mov                 ecx, 0x100000

        $sequence_5 = { 4433a48580d90300 410fb6c3 4433a48580d50300 4533650c 83ff0c 0f8e06020000 }
            // n = 6, score = 100
            //   4433a48580d90300     | dec                 eax
            //   410fb6c3             | lea                 eax, [edx + ecx]
            //   4433a48580d50300     | dec                 ecx
            //   4533650c             | arpl                bp, cx
            //   83ff0c               | dec                 esp
            //   0f8e06020000         | add                 ebx, eax

        $sequence_6 = { c6402163 c6402273 c6402373 c6402474 c6402572 c6402600 c640d873 }
            // n = 7, score = 100
            //   c6402163             | mov                 eax, dword ptr [esp + 0x30]
            //   c6402273             | cmp                 dword ptr [esp], eax
            //   c6402373             | jae                 0x1223
            //   c6402474             | mov                 eax, dword ptr [esp]
            //   c6402572             | add                 eax, 1
            //   c6402600             | mov                 dword ptr [esp], eax
            //   c640d873             | mov                 eax, dword ptr [esp + 0x30]

        $sequence_7 = { 7416 488d0c2f e8???????? 4883c704 448bd8 4c895e10 }
            // n = 6, score = 100
            //   7416                 | dec                 eax
            //   488d0c2f             | mov                 ecx, esi
            //   e8????????           |                     
            //   4883c704             | mov                 byte ptr [esp + 0x198], 0
            //   448bd8               | dec                 eax
            //   4c895e10             | lea                 edx, [0x1c931]

        $sequence_8 = { 89442434 8b4218 89442438 488b4220 4889442440 e8???????? 4c8d442420 }
            // n = 7, score = 100
            //   89442434             | dec                 eax
            //   8b4218               | mov                 eax, dword ptr [ebx]
            //   89442438             | jne                 0x1446
            //   488b4220             | inc                 ebp
            //   4889442440           | xor                 ecx, ecx
            //   e8????????           |                     
            //   4c8d442420           | inc                 ecx

        $sequence_9 = { 4883c304 8be8 85c0 75c5 448b742428 85ff 440f44742420 }
            // n = 7, score = 100
            //   4883c304             | lea                 edx, [edi + ebp]
            //   8be8                 | dec                 eax
            //   85c0                 | mov                 ecx, eax
            //   75c5                 | dec                 eax
            //   448b742428           | mov                 dword ptr [ebx + 8], eax
            //   85ff                 | dec                 ecx
            //   440f44742420         | mov                 ecx, esp

    condition:
        7 of them and filesize < 573440
}