rule win_aperetif_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        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 = "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 = { ffb424a80c0000 53 e8???????? 55 53 e8???????? ff742460 }
            // n = 7, score = 100
            //   ffb424a80c0000       | push                dword ptr [esp + 0xca8]
            //   53                   | push                ebx
            //   e8????????           |                     
            //   55                   | push                ebp
            //   53                   | push                ebx
            //   e8????????           |                     
            //   ff742460             | push                dword ptr [esp + 0x60]

        $sequence_1 = { 895dc8 c745fc01000000 c745d000000000 c745d400000000 85db 740a f0ff4308 }
            // n = 7, score = 100
            //   895dc8               | mov                 dword ptr [ebp - 0x38], ebx
            //   c745fc01000000       | mov                 dword ptr [ebp - 4], 1
            //   c745d000000000       | mov                 dword ptr [ebp - 0x30], 0
            //   c745d400000000       | mov                 dword ptr [ebp - 0x2c], 0
            //   85db                 | test                ebx, ebx
            //   740a                 | je                  0xc
            //   f0ff4308             | lock inc            dword ptr [ebx + 8]

        $sequence_2 = { b999030000 51 68???????? 50 6891000000 6a10 e8???????? }
            // n = 7, score = 100
            //   b999030000           | mov                 ecx, 0x399
            //   51                   | push                ecx
            //   68????????           |                     
            //   50                   | push                eax
            //   6891000000           | push                0x91
            //   6a10                 | push                0x10
            //   e8????????           |                     

        $sequence_3 = { 8d8424dc170000 50 56 ff742428 8d842448040000 688c000000 50 }
            // n = 7, score = 100
            //   8d8424dc170000       | lea                 eax, [esp + 0x17dc]
            //   50                   | push                eax
            //   56                   | push                esi
            //   ff742428             | push                dword ptr [esp + 0x28]
            //   8d842448040000       | lea                 eax, [esp + 0x448]
            //   688c000000           | push                0x8c
            //   50                   | push                eax

        $sequence_4 = { c745fc00000000 85c9 7409 8d450c 50 e8???????? 8b4e0c }
            // n = 7, score = 100
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   85c9                 | test                ecx, ecx
            //   7409                 | je                  0xb
            //   8d450c               | lea                 eax, [ebp + 0xc]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b4e0c               | mov                 ecx, dword ptr [esi + 0xc]

        $sequence_5 = { eb06 c70600000000 c6460401 0fb74e06 8d45b8 663908 740a }
            // n = 7, score = 100
            //   eb06                 | jmp                 8
            //   c70600000000         | mov                 dword ptr [esi], 0
            //   c6460401             | mov                 byte ptr [esi + 4], 1
            //   0fb74e06             | movzx               ecx, word ptr [esi + 6]
            //   8d45b8               | lea                 eax, [ebp - 0x48]
            //   663908               | cmp                 word ptr [eax], cx
            //   740a                 | je                  0xc

        $sequence_6 = { f00fc14104 7515 8b01 ff10 8b4dc4 8bc6 f00fc14108 }
            // n = 7, score = 100
            //   f00fc14104           | lock xadd           dword ptr [ecx + 4], eax
            //   7515                 | jne                 0x17
            //   8b01                 | mov                 eax, dword ptr [ecx]
            //   ff10                 | call                dword ptr [eax]
            //   8b4dc4               | mov                 ecx, dword ptr [ebp - 0x3c]
            //   8bc6                 | mov                 eax, esi
            //   f00fc14108           | lock xadd           dword ptr [ecx + 8], eax

        $sequence_7 = { e9???????? 8d4d58 e9???????? 8d4d2c e9???????? 8b542408 8d420c }
            // n = 7, score = 100
            //   e9????????           |                     
            //   8d4d58               | lea                 ecx, [ebp + 0x58]
            //   e9????????           |                     
            //   8d4d2c               | lea                 ecx, [ebp + 0x2c]
            //   e9????????           |                     
            //   8b542408             | mov                 edx, dword ptr [esp + 8]
            //   8d420c               | lea                 eax, [edx + 0xc]

        $sequence_8 = { eb0d 0fb74706 c70700000000 0fb7c0 c6470401 0fb7c8 663b4d48 }
            // n = 7, score = 100
            //   eb0d                 | jmp                 0xf
            //   0fb74706             | movzx               eax, word ptr [edi + 6]
            //   c70700000000         | mov                 dword ptr [edi], 0
            //   0fb7c0               | movzx               eax, ax
            //   c6470401             | mov                 byte ptr [edi + 4], 1
            //   0fb7c8               | movzx               ecx, ax
            //   663b4d48             | cmp                 cx, word ptr [ebp + 0x48]

        $sequence_9 = { e8???????? b8cc000000 c645fc06 66a3???????? b9???????? 6a0a 33c0 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   b8cc000000           | mov                 eax, 0xcc
            //   c645fc06             | mov                 byte ptr [ebp - 4], 6
            //   66a3????????         |                     
            //   b9????????           |                     
            //   6a0a                 | push                0xa
            //   33c0                 | xor                 eax, eax

    condition:
        7 of them and filesize < 10500096
}