rule win_dizzyvoid_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        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 = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 48890b 48894b08 488b03 488d0c07 48894b10 }
            // n = 5, score = 400
            //   48890b               | mov                 dword ptr [ecx + 8], eax
            //   48894b08             | dec                 eax
            //   488b03               | mov                 dword ptr [ecx + 0x10], eax
            //   488d0c07             | dec                 eax
            //   48894b10             | test                edi, edi

        $sequence_1 = { 48891d???????? 66891d???????? 48c705????????0f000000 48891d???????? }
            // n = 4, score = 400
            //   48891d????????       |                     
            //   66891d????????       |                     
            //   48c705????????0f000000     |     
            //   48891d????????       |                     

        $sequence_2 = { 33d2 8d4a02 ff9738010000 488bf0 }
            // n = 4, score = 400
            //   33d2                 | sar                 edi, 5
            //   8d4a02               | dec                 eax
            //   ff9738010000         | mov                 dword ptr [ecx], eax
            //   488bf0               | dec                 eax

        $sequence_3 = { 0f118980000000 48898190000000 488d0557e5ffff 498b0b 4889442450 }
            // n = 5, score = 400
            //   0f118980000000       | movups              xmmword ptr [ecx + 0x80], xmm1
            //   48898190000000       | dec                 eax
            //   488d0557e5ffff       | mov                 dword ptr [ecx + 0x90], eax
            //   498b0b               | dec                 eax
            //   4889442450           | lea                 eax, [0xffffe557]

        $sequence_4 = { 33c0 33c9 0fa2 33c9 }
            // n = 4, score = 400
            //   33c0                 | xor                 eax, eax
            //   33c9                 | xor                 ecx, ecx
            //   0fa2                 | cpuid               
            //   33c9                 | xor                 ecx, ecx

        $sequence_5 = { 41b8de16ddbc 488b15???????? e8???????? 48894318 }
            // n = 4, score = 400
            //   41b8de16ddbc         | dec                 eax
            //   488b15????????       |                     
            //   e8????????           |                     
            //   48894318             | mov                 dword ptr [ebx + 8], ecx

        $sequence_6 = { 4433c8 03c0 4433d0 418bc1 c1e81d 468d1cc8 }
            // n = 6, score = 400
            //   4433c8               | mov                 dword ptr [ebx], ecx
            //   03c0                 | dec                 eax
            //   4433d0               | mov                 dword ptr [ebx + 8], ecx
            //   418bc1               | dec                 eax
            //   c1e81d               | mov                 eax, dword ptr [ebx]
            //   468d1cc8             | dec                 eax

        $sequence_7 = { 482b3a 48c1ff05 488901 48894108 48894110 4885ff 747b }
            // n = 7, score = 400
            //   482b3a               | dec                 ecx
            //   48c1ff05             | mov                 ecx, dword ptr [ebx]
            //   488901               | dec                 eax
            //   48894108             | mov                 dword ptr [esp + 0x50], eax
            //   48894110             | dec                 eax
            //   4885ff               | sub                 edi, dword ptr [edx]
            //   747b                 | dec                 eax

        $sequence_8 = { 5b 8b4dfc 33cd e8???????? 81c434040000 }
            // n = 5, score = 200
            //   5b                   | lea                 eax, [ebx + 1]
            //   8b4dfc               | dec                 eax
            //   33cd                 | imul                ecx, eax, 0xb8
            //   e8????????           |                     
            //   81c434040000         | inc                 ecx

        $sequence_9 = { 57 8dbdccfbffff b90d010000 b8cccccccc f3ab a1???????? }
            // n = 6, score = 200
            //   57                   | inc                 ecx
            //   8dbdccfbffff         | mov                 eax, 0xbcdd16de
            //   b90d010000           | dec                 eax
            //   b8cccccccc           | mov                 dword ptr [ebx + 0x18], eax
            //   f3ab                 | inc                 ecx
            //   a1????????           |                     

        $sequence_10 = { 7320 8b859cfcffff 0fb68c05a8fcffff 83f104 8b959cfcffff 888c15a8fcffff }
            // n = 6, score = 200
            //   7320                 | inc                 ecx
            //   8b859cfcffff         | mov                 eax, 0xd5b6c63f
            //   0fb68c05a8fcffff     | inc                 esp
            //   83f104               | xor                 ecx, eax
            //   8b959cfcffff         | add                 eax, eax
            //   888c15a8fcffff       | inc                 esp

        $sequence_11 = { f3ab a1???????? 33c5 8945fc b9d3000000 }
            // n = 5, score = 200
            //   f3ab                 | xor                 edx, eax
            //   a1????????           |                     
            //   33c5                 | inc                 ecx
            //   8945fc               | mov                 eax, ecx
            //   b9d3000000           | shr                 eax, 0x1d

        $sequence_12 = { 50 8b8d90fcffff 51 e8???????? 83c40c 8bf4 ff9590fcffff }
            // n = 7, score = 200
            //   50                   | mov                 eax, 0xbcdd16de
            //   8b8d90fcffff         | dec                 eax
            //   51                   | mov                 dword ptr [ebx + 0x18], eax
            //   e8????????           |                     
            //   83c40c               | inc                 ecx
            //   8bf4                 | mov                 eax, 0xd5b6c63f
            //   ff9590fcffff         | inc                 ecx

        $sequence_13 = { 83c40c 8bf4 ff9590fcffff 3bf4 e8???????? 33c0 }
            // n = 6, score = 200
            //   83c40c               | inc                 esi
            //   8bf4                 | lea                 ebx, [eax + ecx*8]
            //   ff9590fcffff         | inc                 ecx
            //   3bf4                 | mov                 eax, edx
            //   e8????????           |                     
            //   33c0                 | dec                 eax

        $sequence_14 = { e8???????? 81c434040000 3bec e8???????? 8be5 }
            // n = 5, score = 200
            //   e8????????           |                     
            //   81c434040000         | mov                 eax, 0xbcdd16de
            //   3bec                 | dec                 eax
            //   e8????????           |                     
            //   8be5                 | mov                 dword ptr [ebx + 0x18], eax

        $sequence_15 = { 81ec34040000 53 56 57 8dbdccfbffff b90d010000 }
            // n = 6, score = 200
            //   81ec34040000         | xor                 edx, eax
            //   53                   | inc                 ecx
            //   56                   | mov                 eax, ecx
            //   57                   | shr                 eax, 0x1d
            //   8dbdccfbffff         | inc                 esi
            //   b90d010000           | lea                 ebx, [eax + ecx*8]

        $sequence_16 = { c745f4b8af4000 e8???????? cc 3b0d???????? }
            // n = 4, score = 100
            //   c745f4b8af4000       | dec                 eax
            //   e8????????           |                     
            //   cc                   | mov                 dword ptr [ecx], eax
            //   3b0d????????         |                     

        $sequence_17 = { 5d c3 8b04c53cb04000 5d }
            // n = 4, score = 100
            //   5d                   | dec                 eax
            //   c3                   | lea                 ecx, [edi + eax]
            //   8b04c53cb04000       | dec                 eax
            //   5d                   | mov                 dword ptr [ebx + 0x10], ecx

        $sequence_18 = { 1f 40 005c1f40 0023 d18a0688078a }
            // n = 5, score = 100
            //   1f                   | dec                 eax
            //   40                   | mov                 dword ptr [ebx], ecx
            //   005c1f40             | dec                 eax
            //   0023                 | mov                 dword ptr [ebx + 8], ecx
            //   d18a0688078a         | dec                 eax

        $sequence_19 = { 83e61f c1e606 033485601c4100 8975dc 8b02 8906 8b45d8 }
            // n = 7, score = 100
            //   83e61f               | dec                 eax
            //   c1e606               | mov                 dword ptr [ecx + 8], eax
            //   033485601c4100       | dec                 eax
            //   8975dc               | mov                 dword ptr [ecx + 0x10], eax
            //   8b02                 | dec                 eax
            //   8906                 | test                edi, edi
            //   8b45d8               | je                  0x8b

        $sequence_20 = { 5d c3 8b04c5d4f04000 5d c3 ff15???????? 33c9 }
            // n = 7, score = 100
            //   5d                   | dec                 eax
            //   c3                   | mov                 dword ptr [ebx], ecx
            //   8b04c5d4f04000       | dec                 eax
            //   5d                   | mov                 dword ptr [ebx + 8], ecx
            //   c3                   | dec                 eax
            //   ff15????????         |                     
            //   33c9                 | mov                 eax, dword ptr [ebx]

        $sequence_21 = { 8b04bd601c4100 830c06ff 33c0 eb16 e8???????? }
            // n = 5, score = 100
            //   8b04bd601c4100       | mov                 eax, dword ptr [ebx]
            //   830c06ff             | dec                 eax
            //   33c0                 | lea                 ecx, [edi + eax]
            //   eb16                 | dec                 eax
            //   e8????????           |                     

        $sequence_22 = { c1e706 8b049d601c4100 0fbe443804 83e001 }
            // n = 4, score = 100
            //   c1e706               | dec                 eax
            //   8b049d601c4100       | sub                 edi, dword ptr [edx]
            //   0fbe443804           | dec                 eax
            //   83e001               | sar                 edi, 5

        $sequence_23 = { 59 8b7d08 833cfd40f2400000 755b 6a18 }
            // n = 5, score = 100
            //   59                   | xor                 edx, edx
            //   8b7d08               | lea                 ecx, [edx + 2]
            //   833cfd40f2400000     | call                dword ptr [edi + 0x138]
            //   755b                 | dec                 eax
            //   6a18                 | mov                 esi, eax

    condition:
        7 of them and filesize < 479232
}