rule win_lightneuron_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        version = "1"
        description = "Detects win.lightneuron."
        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.lightneuron"
        malpedia_rule_date = "20220805"
        malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
        malpedia_version = "20220808"
        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 = { 4d8bec 6666666666660f1f840000000000 33d2 488d4c2420 448d4210 e8???????? 4585f6 }
            // n = 7, score = 100
            //   4d8bec               | mov                 ebx, edx
            //   6666666666660f1f840000000000     | push    ebp
            //   33d2                 | push                esi
            //   488d4c2420           | push                edi
            //   448d4210             | inc                 ecx
            //   e8????????           |                     
            //   4585f6               | push                esi

        $sequence_1 = { 4133b48480d50300 418bc0 41337510 c1e808 0fb6d0 418bc3 418b9c9480d90300 }
            // n = 7, score = 100
            //   4133b48480d50300     | dec                 eax
            //   418bc0               | lea                 edx, [esp + 0xa0]
            //   41337510             | dec                 eax
            //   c1e808               | lea                 ecx, [edi + 4]
            //   0fb6d0               | inc                 ebp
            //   418bc3               | lea                 eax, [ecx + 0x1f]
            //   418b9c9480d90300     | dec                 eax

        $sequence_2 = { ba74270000 e8???????? eb35 498b5c2440 488bcb ff15???????? 4533c9 }
            // n = 7, score = 100
            //   ba74270000           | mov                 ecx, 0x100000
            //   e8????????           |                     
            //   eb35                 | dec                 esp
            //   498b5c2440           | mov                 dword ptr [esp + 0x28], esi
            //   488bcb               | inc                 esp
            //   ff15????????         |                     
            //   4533c9               | mov                 dword ptr [esp + 0x20], esi

        $sequence_3 = { 83c001 890424 8b442430 390424 731b 448b0424 }
            // n = 6, score = 100
            //   83c001               | inc                 ebp
            //   890424               | xor                 eax, eax
            //   8b442430             | dec                 eax
            //   390424               | mov                 dword ptr [esp + 0x28], ebx
            //   731b                 | inc                 ebp
            //   448b0424             | xor                 ecx, ecx

        $sequence_4 = { 415d 415c 5f 5d 5b c3 488b05???????? }
            // n = 7, score = 100
            //   415d                 | je                  0x1d0e
            //   415c                 | dec                 eax
            //   5f                   | mov                 ecx, dword ptr [eax + 8]
            //   5d                   | dec                 eax
            //   5b                   | cmovne              edx, eax
            //   c3                   | dec                 eax
            //   488b05????????       |                     

        $sequence_5 = { 488bc3 488b9c24e8020000 49034238 49894238 488bc7 49034240 49894240 }
            // n = 7, score = 100
            //   488bc3               | mov                 esi, eax
            //   488b9c24e8020000     | dec                 esp
            //   49034238             | mov                 esp, esi
            //   49894238             | dec                 eax
            //   488bc7               | mov                 ebx, ecx
            //   49034240             | xor                 edi, edi
            //   49894240             | dec                 eax

        $sequence_6 = { 483bf1 72ac 49ffc4 4983c610 4c3b6328 0f823bffffff 448bb42494000000 }
            // n = 7, score = 100
            //   483bf1               | dec                 eax
            //   72ac                 | mov                 dword ptr [esp + 0x30], ebp
            //   49ffc4               | dec                 eax
            //   4983c610             | mov                 dword ptr [esp + 0x38], esi
            //   4c3b6328             | dec                 eax
            //   0f823bffffff         | mov                 esi, eax
            //   448bb42494000000     | dec                 eax

        $sequence_7 = { ff15???????? 488bf8 4885c0 0f8487000000 488d542468 488bc8 48895c2450 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   488bf8               | mov                 ebx, eax
            //   4885c0               | mov                 eax, dword ptr [esp + 0x40]
            //   0f8487000000         | test                ebx, ebx
            //   488d542468           | cmove               eax, edi
            //   488bc8               | mov                 dword ptr [esp + 0x1d8], eax
            //   48895c2450           | mov                 ebx, eax

        $sequence_8 = { 418b9486d0f70200 410fb6c0 418b8c86d0f70200 c1ca08 410fb6c1 c1c110 33d1 }
            // n = 7, score = 100
            //   418b9486d0f70200     | mov                 dword ptr [esp + 0x48], esi
            //   410fb6c0             | dec                 eax
            //   418b8c86d0f70200     | mov                 ecx, dword ptr [edi + 0x428]
            //   c1ca08               | xor                 esi, esi
            //   410fb6c1             | dec                 eax
            //   c1c110               | cmp                 ecx, eax
            //   33d1                 | jl                  0x1cca

        $sequence_9 = { 448be0 85c0 0f85f1000000 488b7c2430 488d5c2420 483bf5 7416 }
            // n = 7, score = 100
            //   448be0               | dec                 eax
            //   85c0                 | mov                 esi, dword ptr [esp + 0x138]
            //   0f85f1000000         | dec                 eax
            //   488b7c2430           | lea                 eax, [esi + eax*4 - 4]
            //   488d5c2420           | nop                 
            //   483bf5               | cmp                 dword ptr [eax], 0
            //   7416                 | dec                 eax

    condition:
        7 of them and filesize < 573440
}