rule win_lightneuron_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.lightneuron"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 488bf7 492bd0 6690 0129 33c0 3929 0f92c0 }
            // n = 7, score = 100
            //   488bf7               | dec                 eax
            //   492bd0               | lea                 ecx, [esp + 0x30]
            //   6690                 | dec                 eax
            //   0129                 | lea                 ecx, [esp + 0x50]
            //   33c0                 | inc                 esp
            //   3929                 | mov                 ecx, ebx
            //   0f92c0               | dec                 eax

        $sequence_1 = { 03d0 69d2ff000000 2bca 4863c1 400fb6cd 440fb69c0400010000 4103c8 }
            // n = 7, score = 100
            //   03d0                 | lea                 edx, [0x3330c]
            //   69d2ff000000         | dec                 esp
            //   2bca                 | lea                 ecx, [0x332f6]
            //   4863c1               | inc                 ecx
            //   400fb6cd             | mov                 ecx, 1
            //   440fb69c0400010000     | dec    eax
            //   4103c8               | arpl                ax, cx

        $sequence_2 = { 85c0 7515 4c8d87e0000000 488bd6 488bcf e8???????? }
            // n = 6, score = 100
            //   85c0                 | xor                 eax, eax
            //   7515                 | cmp                 dword ptr [ecx], ebp
            //   4c8d87e0000000       | setb                al
            //   488bd6               | dec                 eax
            //   488bcf               | inc                 esi
            //   e8????????           |                     

        $sequence_3 = { 488bcb 480f45d0 e8???????? 488bcf e8???????? 418b8e28010000 }
            // n = 6, score = 100
            //   488bcb               | movsx               eax, al
            //   480f45d0             | movzx               eax, byte ptr [eax + ebp]
            //   e8????????           |                     
            //   488bcf               | ja                  0x1949
            //   e8????????           |                     
            //   418b8e28010000       | movzx               eax, al

        $sequence_4 = { 49ffc3 d3e8 4883eb01 41884101 75d5 33c0 488b5c2430 }
            // n = 7, score = 100
            //   49ffc3               | mov                 ebp, eax
            //   d3e8                 | dec                 eax
            //   4883eb01             | test                eax, eax
            //   41884101             | je                  0x76f
            //   75d5                 | dec                 eax
            //   33c0                 | lea                 edx, [0x23226]
            //   488b5c2430           | dec                 eax

        $sequence_5 = { e8???????? 488bcf e8???????? 418b8e28010000 4c8bf8 e8???????? 498d8e08010000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488bcf               | mov                 esi, dword ptr [esp + 0x58]
            //   e8????????           |                     
            //   418b8e28010000       | dec                 eax
            //   4c8bf8               | add                 esp, 0x40
            //   e8????????           |                     
            //   498d8e08010000       | pop                 edi

        $sequence_6 = { 488d4c2430 e8???????? 85c0 7814 488d4c2430 e8???????? b880bfffff }
            // n = 7, score = 100
            //   488d4c2430           | lea                 eax, [esp + 0x190]
            //   e8????????           |                     
            //   85c0                 | dec                 eax
            //   7814                 | lea                 edx, [0x16304]
            //   488d4c2430           | dec                 eax
            //   e8????????           |                     
            //   b880bfffff           | lea                 ecx, [esp + 0x98]

        $sequence_7 = { 488d4e01 c6441c2000 e8???????? 488d4c2420 8bd8 e8???????? 85db }
            // n = 7, score = 100
            //   488d4e01             | dec                 eax
            //   c6441c2000           | lea                 edx, [esp + 0xc0]
            //   e8????????           |                     
            //   488d4c2420           | dec                 eax
            //   8bd8                 | lea                 ecx, [esp + 0xc0]
            //   e8????????           |                     
            //   85db                 | mov                 ebx, eax

        $sequence_8 = { 4533c0 b900001000 48896c2428 89442420 e8???????? 488bce ff15???????? }
            // n = 7, score = 100
            //   4533c0               | cmovne              edx, eax
            //   b900001000           | dec                 eax
            //   48896c2428           | mov                 ecx, ebx
            //   89442420             | dec                 eax
            //   e8????????           |                     
            //   488bce               | test                eax, eax
            //   ff15????????         |                     

        $sequence_9 = { 45894304 448b4b08 4183d200 450fb7c1 41c1e910 418bd1 418bc8 }
            // n = 7, score = 100
            //   45894304             | dec                 eax
            //   448b4b08             | test                ecx, ecx
            //   4183d200             | je                  0x69e
            //   450fb7c1             | dec                 eax
            //   41c1e910             | mov                 eax, dword ptr [edx + 0x10]
            //   418bd1               | dec                 eax
            //   418bc8               | lea                 edx, [eax + ecx*4 - 4]

    condition:
        7 of them and filesize < 573440
}