rule win_maui_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.maui."
        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.maui"
        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 = { 68???????? f7de 1bf6 6a13 6a06 f7de e8???????? }
            // n = 7, score = 100
            //   68????????           |                     
            //   f7de                 | neg                 esi
            //   1bf6                 | sbb                 esi, esi
            //   6a13                 | push                0x13
            //   6a06                 | push                6
            //   f7de                 | neg                 esi
            //   e8????????           |                     

        $sequence_1 = { e8???????? c787f8000000b01a4200 83c40c 33c9 83fe02 0f95c1 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   c787f8000000b01a4200     | mov    dword ptr [edi + 0xf8], 0x421ab0
            //   83c40c               | add                 esp, 0xc
            //   33c9                 | xor                 ecx, ecx
            //   83fe02               | cmp                 esi, 2
            //   0f95c1               | setne               cl

        $sequence_2 = { a1???????? 33c4 890424 8b442408 85c0 7421 85c9 }
            // n = 7, score = 100
            //   a1????????           |                     
            //   33c4                 | xor                 eax, esp
            //   890424               | mov                 dword ptr [esp], eax
            //   8b442408             | mov                 eax, dword ptr [esp + 8]
            //   85c0                 | test                eax, eax
            //   7421                 | je                  0x23
            //   85c9                 | test                ecx, ecx

        $sequence_3 = { 68???????? 6889000000 e9???????? 83c002 807c241300 89442414 0f8561010000 }
            // n = 7, score = 100
            //   68????????           |                     
            //   6889000000           | push                0x89
            //   e9????????           |                     
            //   83c002               | add                 eax, 2
            //   807c241300           | cmp                 byte ptr [esp + 0x13], 0
            //   89442414             | mov                 dword ptr [esp + 0x14], eax
            //   0f8561010000         | jne                 0x167

        $sequence_4 = { 8b15???????? 894808 668b0d???????? 89500c 8b15???????? 6aff 52 }
            // n = 7, score = 100
            //   8b15????????         |                     
            //   894808               | mov                 dword ptr [eax + 8], ecx
            //   668b0d????????       |                     
            //   89500c               | mov                 dword ptr [eax + 0xc], edx
            //   8b15????????         |                     
            //   6aff                 | push                -1
            //   52                   | push                edx

        $sequence_5 = { 8b542410 55 56 57 50 8d4c2410 }
            // n = 6, score = 100
            //   8b542410             | mov                 edx, dword ptr [esp + 0x10]
            //   55                   | push                ebp
            //   56                   | push                esi
            //   57                   | push                edi
            //   50                   | push                eax
            //   8d4c2410             | lea                 ecx, [esp + 0x10]

        $sequence_6 = { eb09 0fb6c0 8a8040db4a00 46 0fb6c0 84c9 7850 }
            // n = 7, score = 100
            //   eb09                 | jmp                 0xb
            //   0fb6c0               | movzx               eax, al
            //   8a8040db4a00         | mov                 al, byte ptr [eax + 0x4adb40]
            //   46                   | inc                 esi
            //   0fb6c0               | movzx               eax, al
            //   84c9                 | test                cl, cl
            //   7850                 | js                  0x52

        $sequence_7 = { 8b06 8b4868 85c9 751c 6844040000 68???????? 6a42 }
            // n = 7, score = 100
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   8b4868               | mov                 ecx, dword ptr [eax + 0x68]
            //   85c9                 | test                ecx, ecx
            //   751c                 | jne                 0x1e
            //   6844040000           | push                0x444
            //   68????????           |                     
            //   6a42                 | push                0x42

        $sequence_8 = { 8b30 8b7b14 8b7614 33f7 23f1 33fe 897b14 }
            // n = 7, score = 100
            //   8b30                 | mov                 esi, dword ptr [eax]
            //   8b7b14               | mov                 edi, dword ptr [ebx + 0x14]
            //   8b7614               | mov                 esi, dword ptr [esi + 0x14]
            //   33f7                 | xor                 esi, edi
            //   23f1                 | and                 esi, ecx
            //   33fe                 | xor                 edi, esi
            //   897b14               | mov                 dword ptr [ebx + 0x14], edi

        $sequence_9 = { 8bf0 85f6 7520 68fe000000 68???????? 6a41 68a5000000 }
            // n = 7, score = 100
            //   8bf0                 | mov                 esi, eax
            //   85f6                 | test                esi, esi
            //   7520                 | jne                 0x22
            //   68fe000000           | push                0xfe
            //   68????????           |                     
            //   6a41                 | push                0x41
            //   68a5000000           | push                0xa5

    condition:
        7 of them and filesize < 1616896
}