rule win_funny_dream_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.funny_dream"
        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 = { 64a300000000 8bf1 89b574fbffff 8b7d08 8d85dcfdffff }
            // n = 5, score = 200
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   8bf1                 | mov                 esi, ecx
            //   89b574fbffff         | mov                 dword ptr [ebp - 0x48c], esi
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]
            //   8d85dcfdffff         | lea                 eax, [ebp - 0x224]

        $sequence_1 = { 0f85ed000000 47 6a3b 57 e8???????? }
            // n = 5, score = 200
            //   0f85ed000000         | jne                 0xf3
            //   47                   | inc                 edi
            //   6a3b                 | push                0x3b
            //   57                   | push                edi
            //   e8????????           |                     

        $sequence_2 = { 894628 8a4610 8885e9feffff 8d85e8feffff 50 e8???????? 6a00 }
            // n = 7, score = 200
            //   894628               | mov                 dword ptr [esi + 0x28], eax
            //   8a4610               | mov                 al, byte ptr [esi + 0x10]
            //   8885e9feffff         | mov                 byte ptr [ebp - 0x117], al
            //   8d85e8feffff         | lea                 eax, [ebp - 0x118]
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a00                 | push                0

        $sequence_3 = { 3b5f14 7423 660f1f840000000000 8b33 }
            // n = 4, score = 200
            //   3b5f14               | cmp                 ebx, dword ptr [edi + 0x14]
            //   7423                 | je                  0x25
            //   660f1f840000000000     | nop    word ptr [eax + eax]
            //   8b33                 | mov                 esi, dword ptr [ebx]

        $sequence_4 = { 8d45f4 50 8d856cfeffff 50 e8???????? 83c408 85c0 }
            // n = 7, score = 200
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   8d856cfeffff         | lea                 eax, [ebp - 0x194]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax

        $sequence_5 = { ffd6 8d4710 50 ff15???????? 8b4f04 }
            // n = 5, score = 200
            //   ffd6                 | call                esi
            //   8d4710               | lea                 eax, [edi + 0x10]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8b4f04               | mov                 ecx, dword ptr [edi + 4]

        $sequence_6 = { 84e4 0f85a6000000 85f6 0f849e000000 8bde 8d4b01 }
            // n = 6, score = 200
            //   84e4                 | test                ah, ah
            //   0f85a6000000         | jne                 0xac
            //   85f6                 | test                esi, esi
            //   0f849e000000         | je                  0xa4
            //   8bde                 | mov                 ebx, esi
            //   8d4b01               | lea                 ecx, [ebx + 1]

        $sequence_7 = { ffd0 8bf0 83feff 0f84c4000000 8d45f8 50 56 }
            // n = 7, score = 200
            //   ffd0                 | call                eax
            //   8bf0                 | mov                 esi, eax
            //   83feff               | cmp                 esi, -1
            //   0f84c4000000         | je                  0xca
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   56                   | push                esi

        $sequence_8 = { 8db5d0fdffff 2410 8d4e01 88041f 47 6690 8a06 }
            // n = 7, score = 200
            //   8db5d0fdffff         | lea                 esi, [ebp - 0x230]
            //   2410                 | and                 al, 0x10
            //   8d4e01               | lea                 ecx, [esi + 1]
            //   88041f               | mov                 byte ptr [edi + ebx], al
            //   47                   | inc                 edi
            //   6690                 | nop                 
            //   8a06                 | mov                 al, byte ptr [esi]

        $sequence_9 = { e8???????? 57 e8???????? 83c404 8bfe 3b7314 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   57                   | push                edi
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8bfe                 | mov                 edi, esi
            //   3b7314               | cmp                 esi, dword ptr [ebx + 0x14]

    condition:
        7 of them and filesize < 393216
}