rule win_dizzyvoid_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.dizzyvoid."
        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.dizzyvoid"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 41b8bc469d7d 488b15???????? e8???????? 48898388000000 }
            // n = 4, score = 400
            //   41b8bc469d7d         | dec                 ecx
            //   488b15????????       |                     
            //   e8????????           |                     
            //   48898388000000       | sub                 ecx, ecx

        $sequence_1 = { 492bc9 48b865210b59c84216b2 48f7e9 4803d1 48c1fa07 }
            // n = 5, score = 400
            //   492bc9               | dec                 ecx
            //   48b865210b59c84216b2     | sub    ecx, ecx
            //   48f7e9               | dec                 eax
            //   4803d1               | mov                 eax, 0x590b2165
            //   48c1fa07             | enter               0x1642, -0x4e

        $sequence_2 = { 488bd9 33d2 488b89d8000000 ff9390000000 }
            // n = 4, score = 400
            //   488bd9               | inc                 ecx
            //   33d2                 | mov                 eax, 0xbffc38cc
            //   488b89d8000000       | dec                 eax
            //   ff9390000000         | mov                 dword ptr [ebx + 0x60], eax

        $sequence_3 = { 48896c2420 448bce 4d8bc6 33d2 }
            // n = 4, score = 400
            //   48896c2420           | dec                 eax
            //   448bce               | mov                 ecx, dword ptr [esi]
            //   4d8bc6               | inc                 ecx
            //   33d2                 | mov                 eax, 0x7d9d46bc

        $sequence_4 = { 488b03 488d0c07 48894b10 4c8bc0 488b5608 488b0e e8???????? }
            // n = 7, score = 400
            //   488b03               | dec                 eax
            //   488d0c07             | add                 edx, ecx
            //   48894b10             | dec                 eax
            //   4c8bc0               | sar                 edx, 7
            //   488b5608             | dec                 eax
            //   488b0e               | mov                 eax, edx
            //   e8????????           |                     

        $sequence_5 = { 41b8cc38fcbf 488b15???????? e8???????? 48894360 }
            // n = 4, score = 400
            //   41b8cc38fcbf         | mov                 dword ptr [ebx + 0x10], ecx
            //   488b15????????       |                     
            //   e8????????           |                     
            //   48894360             | dec                 esp

        $sequence_6 = { 33d2 33c9 ff15???????? 4c63f8 498bcf e8???????? }
            // n = 6, score = 400
            //   33d2                 | xor                 ecx, ecx
            //   33c9                 | dec                 eax
            //   ff15????????         |                     
            //   4c63f8               | mov                 dword ptr [esp + 0x20], ebp
            //   498bcf               | inc                 esp
            //   e8????????           |                     

        $sequence_7 = { 4885c9 7403 ff5350 488b8bc8000000 }
            // n = 4, score = 400
            //   4885c9               | dec                 eax
            //   7403                 | mov                 eax, edx
            //   ff5350               | dec                 eax
            //   488b8bc8000000       | shr                 eax, 0x3f

        $sequence_8 = { 8b8d90fcffff 51 e8???????? 83c40c 8bf4 }
            // n = 5, score = 200
            //   8b8d90fcffff         | call                dword ptr [ebx + 0x50]
            //   51                   | dec                 eax
            //   e8????????           |                     
            //   83c40c               | mov                 ecx, dword ptr [ebx + 0xd0]
            //   8bf4                 | dec                 eax

        $sequence_9 = { c705????????2a134100 8935???????? a3???????? ff15???????? a3???????? 83f8ff 0f84c1000000 }
            // n = 7, score = 200
            //   c705????????2a134100     |     
            //   8935????????         |                     
            //   a3????????           |                     
            //   ff15????????         |                     
            //   a3????????           |                     
            //   83f8ff               | call                dword ptr [ebx + 0x90]
            //   0f84c1000000         | nop                 

        $sequence_10 = { a1???????? a3???????? a1???????? c705????????2a134100 8935???????? a3???????? }
            // n = 6, score = 200
            //   a1????????           |                     
            //   a3????????           |                     
            //   a1????????           |                     
            //   c705????????2a134100     |     
            //   8935????????         |                     
            //   a3????????           |                     

        $sequence_11 = { 83c40c 8bf4 ff9590fcffff 3bf4 e8???????? 33c0 52 }
            // n = 7, score = 200
            //   83c40c               | call                dword ptr [ebx + 0x50]
            //   8bf4                 | dec                 eax
            //   ff9590fcffff         | mov                 ecx, dword ptr [ebx + 0xd0]
            //   3bf4                 | dec                 eax
            //   e8????????           |                     
            //   33c0                 | test                ecx, ecx
            //   52                   | je                  0x14

        $sequence_12 = { 8bec 81ec34040000 53 56 57 8dbdccfbffff }
            // n = 6, score = 200
            //   8bec                 | test                ecx, ecx
            //   81ec34040000         | je                  0x14
            //   53                   | call                dword ptr [ebx + 0x50]
            //   56                   | dec                 eax
            //   57                   | mov                 ebx, ecx
            //   8dbdccfbffff         | xor                 edx, edx

        $sequence_13 = { ebc5 8bf4 6a40 6800300000 }
            // n = 4, score = 200
            //   ebc5                 | test                ecx, ecx
            //   8bf4                 | dec                 eax
            //   6a40                 | test                ecx, ecx
            //   6800300000           | je                  5

        $sequence_14 = { b90d010000 b8cccccccc f3ab a1???????? 33c5 }
            // n = 5, score = 200
            //   b90d010000           | dec                 eax
            //   b8cccccccc           | test                ecx, ecx
            //   f3ab                 | je                  5
            //   a1????????           |                     
            //   33c5                 | call                dword ptr [ebx + 0x50]

        $sequence_15 = { 33cd e8???????? 81c434040000 3bec e8???????? 8be5 }
            // n = 6, score = 200
            //   33cd                 | xor                 edx, edx
            //   e8????????           |                     
            //   81c434040000         | dec                 eax
            //   3bec                 | mov                 ecx, dword ptr [ebx + 0xe0]
            //   e8????????           |                     
            //   8be5                 | inc                 ecx

        $sequence_16 = { 83e71f c1e706 8b049d601c4100 0fbe443804 83e001 }
            // n = 5, score = 100
            //   83e71f               | inc                 ecx
            //   c1e706               | mov                 eax, 0x7d9d46bc
            //   8b049d601c4100       | dec                 eax
            //   0fbe443804           | mov                 dword ptr [ebx + 0x88], eax
            //   83e001               | inc                 ecx

        $sequence_17 = { 8d4df0 c745fc???????? e8???????? 68???????? 8d45f0 50 c745f084af4000 }
            // n = 7, score = 100
            //   8d4df0               | mov                 eax, 0xb8a86f3a
            //   c745fc????????       |                     
            //   e8????????           |                     
            //   68????????           |                     
            //   8d45f0               | inc                 ecx
            //   50                   | mov                 eax, 0x7d9d46bc
            //   c745f084af4000       | dec                 eax

        $sequence_18 = { f3a5 8d8dc4fcffff 51 6a00 }
            // n = 4, score = 100
            //   f3a5                 | inc                 ecx
            //   8d8dc4fcffff         | mov                 eax, 0xb8a86f3a
            //   51                   | dec                 eax
            //   6a00                 | test                ecx, ecx

        $sequence_19 = { f0300e 40 3d31030000 72eb 6a40 6800100000 6800040000 }
            // n = 7, score = 100
            //   f0300e               | mov                 dword ptr [ebx + 0x88], eax
            //   40                   | inc                 ecx
            //   3d31030000           | mov                 eax, 0xb8a86f3a
            //   72eb                 | inc                 ecx
            //   6a40                 | mov                 eax, 0x7d9d46bc
            //   6800100000           | dec                 eax
            //   6800040000           | mov                 dword ptr [ebx + 0x88], eax

        $sequence_20 = { c1e706 8b0485601c4100 83c00c 03c7 50 }
            // n = 5, score = 100
            //   c1e706               | mov                 eax, eax
            //   8b0485601c4100       | dec                 eax
            //   83c00c               | mov                 edx, dword ptr [esi + 8]
            //   03c7                 | dec                 eax
            //   50                   | mov                 ecx, dword ptr [esi]

        $sequence_21 = { 8b04c5d4f04000 5d c3 ff15???????? 33c9 }
            // n = 5, score = 100
            //   8b04c5d4f04000       | inc                 ecx
            //   5d                   | mov                 eax, 0x7d9d46bc
            //   c3                   | dec                 eax
            //   ff15????????         |                     
            //   33c9                 | mov                 dword ptr [ebx + 0x88], eax

        $sequence_22 = { 51 6af6 ff15???????? 8b04bd601c4100 830c06ff 33c0 }
            // n = 6, score = 100
            //   51                   | dec                 eax
            //   6af6                 | lea                 ecx, [edi + eax]
            //   ff15????????         |                     
            //   8b04bd601c4100       | dec                 eax
            //   830c06ff             | mov                 dword ptr [ebx + 0x10], ecx
            //   33c0                 | dec                 esp

        $sequence_23 = { 59 83f83c 7635 68???????? e8???????? 8d0c458c024100 }
            // n = 6, score = 100
            //   59                   | dec                 eax
            //   83f83c               | shr                 eax, 0x3f
            //   7635                 | dec                 eax
            //   68????????           |                     
            //   e8????????           |                     
            //   8d0c458c024100       | mov                 eax, dword ptr [ebx]

    condition:
        7 of them and filesize < 479232
}