rule win_aperetif_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.aperetif."
        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.aperetif"
        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 = { eb14 2bf2 d1fe ebbd 2bf2 d1fe ebe7 }
            // n = 7, score = 100
            //   eb14                 | jmp                 0x16
            //   2bf2                 | sub                 esi, edx
            //   d1fe                 | sar                 esi, 1
            //   ebbd                 | jmp                 0xffffffbf
            //   2bf2                 | sub                 esi, edx
            //   d1fe                 | sar                 esi, 1
            //   ebe7                 | jmp                 0xffffffe9

        $sequence_1 = { eb08 8b5c243c 8b6c2410 8b442414 8b742420 40 89442414 }
            // n = 7, score = 100
            //   eb08                 | jmp                 0xa
            //   8b5c243c             | mov                 ebx, dword ptr [esp + 0x3c]
            //   8b6c2410             | mov                 ebp, dword ptr [esp + 0x10]
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   8b742420             | mov                 esi, dword ptr [esp + 0x20]
            //   40                   | inc                 eax
            //   89442414             | mov                 dword ptr [esp + 0x14], eax

        $sequence_2 = { 8b742474 8d0468 03c3 3bde 89442460 0f42f3 8b9c2484000000 }
            // n = 7, score = 100
            //   8b742474             | mov                 esi, dword ptr [esp + 0x74]
            //   8d0468               | lea                 eax, [eax + ebp*2]
            //   03c3                 | add                 eax, ebx
            //   3bde                 | cmp                 ebx, esi
            //   89442460             | mov                 dword ptr [esp + 0x60], eax
            //   0f42f3               | cmovb               esi, ebx
            //   8b9c2484000000       | mov                 ebx, dword ptr [esp + 0x84]

        $sequence_3 = { 8b4da4 8d04be 8b75b4 83c40c 894104 8b8d70ffffff 83ec0c }
            // n = 7, score = 100
            //   8b4da4               | mov                 ecx, dword ptr [ebp - 0x5c]
            //   8d04be               | lea                 eax, [esi + edi*4]
            //   8b75b4               | mov                 esi, dword ptr [ebp - 0x4c]
            //   83c40c               | add                 esp, 0xc
            //   894104               | mov                 dword ptr [ecx + 4], eax
            //   8b8d70ffffff         | mov                 ecx, dword ptr [ebp - 0x90]
            //   83ec0c               | sub                 esp, 0xc

        $sequence_4 = { e8???????? 8d5f50 8d7328 56 e8???????? 83c408 85c0 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d5f50               | lea                 ebx, [edi + 0x50]
            //   8d7328               | lea                 esi, [ebx + 0x28]
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax

        $sequence_5 = { f0ff4108 8b0e 894de8 33c9 33ff 894d08 894dd4 }
            // n = 7, score = 100
            //   f0ff4108             | lock inc            dword ptr [ecx + 8]
            //   8b0e                 | mov                 ecx, dword ptr [esi]
            //   894de8               | mov                 dword ptr [ebp - 0x18], ecx
            //   33c9                 | xor                 ecx, ecx
            //   33ff                 | xor                 edi, edi
            //   894d08               | mov                 dword ptr [ebp + 8], ecx
            //   894dd4               | mov                 dword ptr [ebp - 0x2c], ecx

        $sequence_6 = { e8???????? 8d4dd0 e8???????? 8d4d08 e8???????? 8d4d64 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d4dd0               | lea                 ecx, [ebp - 0x30]
            //   e8????????           |                     
            //   8d4d08               | lea                 ecx, [ebp + 8]
            //   e8????????           |                     
            //   8d4d64               | lea                 ecx, [ebp + 0x64]
            //   e8????????           |                     

        $sequence_7 = { eb02 33f6 8b442438 895c2414 895c2418 8b400c 85c0 }
            // n = 7, score = 100
            //   eb02                 | jmp                 4
            //   33f6                 | xor                 esi, esi
            //   8b442438             | mov                 eax, dword ptr [esp + 0x38]
            //   895c2414             | mov                 dword ptr [esp + 0x14], ebx
            //   895c2418             | mov                 dword ptr [esp + 0x18], ebx
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   85c0                 | test                eax, eax

        $sequence_8 = { 8d4a01 894808 b920000000 2bcf 89700c 3bcb 72d2 }
            // n = 7, score = 100
            //   8d4a01               | lea                 ecx, [edx + 1]
            //   894808               | mov                 dword ptr [eax + 8], ecx
            //   b920000000           | mov                 ecx, 0x20
            //   2bcf                 | sub                 ecx, edi
            //   89700c               | mov                 dword ptr [eax + 0xc], esi
            //   3bcb                 | cmp                 ecx, ebx
            //   72d2                 | jb                  0xffffffd4

        $sequence_9 = { f20f114c2440 8b4e04 8bc1 c1e81f 83c608 03f9 660f6ec1 }
            // n = 7, score = 100
            //   f20f114c2440         | movsd               qword ptr [esp + 0x40], xmm1
            //   8b4e04               | mov                 ecx, dword ptr [esi + 4]
            //   8bc1                 | mov                 eax, ecx
            //   c1e81f               | shr                 eax, 0x1f
            //   83c608               | add                 esi, 8
            //   03f9                 | add                 edi, ecx
            //   660f6ec1             | movd                xmm0, ecx

    condition:
        7 of them and filesize < 10500096
}