rule win_sneepy_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.sneepy."
        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.sneepy"
        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 = { ffd3 6804010000 8d85f0fcffff 6a00 50 }
            // n = 5, score = 100
            //   ffd3                 | call                ebx
            //   6804010000           | push                0x104
            //   8d85f0fcffff         | lea                 eax, [ebp - 0x310]
            //   6a00                 | push                0
            //   50                   | push                eax

        $sequence_1 = { 8b85a8fbffff 52 50 e8???????? 8d85a4fbffff 83c40c 8bc8 }
            // n = 7, score = 100
            //   8b85a8fbffff         | mov                 eax, dword ptr [ebp - 0x458]
            //   52                   | push                edx
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d85a4fbffff         | lea                 eax, [ebp - 0x45c]
            //   83c40c               | add                 esp, 0xc
            //   8bc8                 | mov                 ecx, eax

        $sequence_2 = { 762a 56 e8???????? 8d044594244100 8bc8 2bce }
            // n = 6, score = 100
            //   762a                 | jbe                 0x2c
            //   56                   | push                esi
            //   e8????????           |                     
            //   8d044594244100       | lea                 eax, [eax*2 + 0x412494]
            //   8bc8                 | mov                 ecx, eax
            //   2bce                 | sub                 ecx, esi

        $sequence_3 = { ebf6 6a00 ff15???????? c3 ff15???????? c20400 8bff }
            // n = 7, score = 100
            //   ebf6                 | jmp                 0xfffffff8
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   c3                   | ret                 
            //   ff15????????         |                     
            //   c20400               | ret                 4
            //   8bff                 | mov                 edi, edi

        $sequence_4 = { 8dbdacfeffff 2bc1 8bf1 4f 8a4f01 47 }
            // n = 6, score = 100
            //   8dbdacfeffff         | lea                 edi, [ebp - 0x154]
            //   2bc1                 | sub                 eax, ecx
            //   8bf1                 | mov                 esi, ecx
            //   4f                   | dec                 edi
            //   8a4f01               | mov                 cl, byte ptr [edi + 1]
            //   47                   | inc                 edi

        $sequence_5 = { 47 897e14 897e70 c686c800000043 c6864b01000043 c74668c0164100 6a0d }
            // n = 7, score = 100
            //   47                   | inc                 edi
            //   897e14               | mov                 dword ptr [esi + 0x14], edi
            //   897e70               | mov                 dword ptr [esi + 0x70], edi
            //   c686c800000043       | mov                 byte ptr [esi + 0xc8], 0x43
            //   c6864b01000043       | mov                 byte ptr [esi + 0x14b], 0x43
            //   c74668c0164100       | mov                 dword ptr [esi + 0x68], 0x4116c0
            //   6a0d                 | push                0xd

        $sequence_6 = { 50 53 e8???????? eb24 50 53 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   53                   | push                ebx
            //   e8????????           |                     
            //   eb24                 | jmp                 0x26
            //   50                   | push                eax
            //   53                   | push                ebx

        $sequence_7 = { 8d55ec 83c404 2bd0 8d642400 8a08 }
            // n = 5, score = 100
            //   8d55ec               | lea                 edx, [ebp - 0x14]
            //   83c404               | add                 esp, 4
            //   2bd0                 | sub                 edx, eax
            //   8d642400             | lea                 esp, [esp]
            //   8a08                 | mov                 cl, byte ptr [eax]

        $sequence_8 = { 8d55cc 8d45ec 6a00 898da8feffff }
            // n = 4, score = 100
            //   8d55cc               | lea                 edx, [ebp - 0x34]
            //   8d45ec               | lea                 eax, [ebp - 0x14]
            //   6a00                 | push                0
            //   898da8feffff         | mov                 dword ptr [ebp - 0x158], ecx

        $sequence_9 = { 51 e8???????? 83c404 8bd0 8a08 40 }
            // n = 6, score = 100
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8bd0                 | mov                 edx, eax
            //   8a08                 | mov                 cl, byte ptr [eax]
            //   40                   | inc                 eax

    condition:
        7 of them and filesize < 188416
}