rule win_alreay_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.alreay."
        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.alreay"
        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 = { 895f2c 8b8608870000 8bd5 3bd0 7528 8b960c870000 8bc3 }
            // n = 7, score = 200
            //   895f2c               | mov                 dword ptr [edi + 0x2c], ebx
            //   8b8608870000         | mov                 eax, dword ptr [esi + 0x8708]
            //   8bd5                 | mov                 edx, ebp
            //   3bd0                 | cmp                 edx, eax
            //   7528                 | jne                 0x2a
            //   8b960c870000         | mov                 edx, dword ptr [esi + 0x870c]
            //   8bc3                 | mov                 eax, ebx

        $sequence_1 = { 8b442404 8b88e4010000 85c9 746c 8b4c2408 85c9 7564 }
            // n = 7, score = 200
            //   8b442404             | mov                 eax, dword ptr [esp + 4]
            //   8b88e4010000         | mov                 ecx, dword ptr [eax + 0x1e4]
            //   85c9                 | test                ecx, ecx
            //   746c                 | je                  0x6e
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]
            //   85c9                 | test                ecx, ecx
            //   7564                 | jne                 0x66

        $sequence_2 = { 51 52 e8???????? 8bf0 83c40c 85f6 755a }
            // n = 7, score = 200
            //   51                   | push                ecx
            //   52                   | push                edx
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   83c40c               | add                 esp, 0xc
            //   85f6                 | test                esi, esi
            //   755a                 | jne                 0x5c

        $sequence_3 = { 8d842430010000 51 8b4c242c 23f0 56 51 ff15???????? }
            // n = 7, score = 200
            //   8d842430010000       | lea                 eax, [esp + 0x130]
            //   51                   | push                ecx
            //   8b4c242c             | mov                 ecx, dword ptr [esp + 0x2c]
            //   23f0                 | and                 esi, eax
            //   56                   | push                esi
            //   51                   | push                ecx
            //   ff15????????         |                     

        $sequence_4 = { eb38 b90b000000 bf???????? 8bf3 33c0 66f3a7 750a }
            // n = 7, score = 200
            //   eb38                 | jmp                 0x3a
            //   b90b000000           | mov                 ecx, 0xb
            //   bf????????           |                     
            //   8bf3                 | mov                 esi, ebx
            //   33c0                 | xor                 eax, eax
            //   66f3a7               | repe cmpsd          dword ptr [esi], dword ptr es:[edi]
            //   750a                 | jne                 0xc

        $sequence_5 = { 8bdd c1eb16 c1e50a 0bdd 8b6c2428 895c241c 8bd8 }
            // n = 7, score = 200
            //   8bdd                 | mov                 ebx, ebp
            //   c1eb16               | shr                 ebx, 0x16
            //   c1e50a               | shl                 ebp, 0xa
            //   0bdd                 | or                  ebx, ebp
            //   8b6c2428             | mov                 ebp, dword ptr [esp + 0x28]
            //   895c241c             | mov                 dword ptr [esp + 0x1c], ebx
            //   8bd8                 | mov                 ebx, eax

        $sequence_6 = { ff15???????? 83c404 b800edffff 5f 5e 5d 5b }
            // n = 7, score = 200
            //   ff15????????         |                     
            //   83c404               | add                 esp, 4
            //   b800edffff           | mov                 eax, 0xffffed00
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp
            //   5b                   | pop                 ebx

        $sequence_7 = { c3 8b742418 56 e8???????? 8b4d4c 83c404 8901 }
            // n = 7, score = 200
            //   c3                   | ret                 
            //   8b742418             | mov                 esi, dword ptr [esp + 0x18]
            //   56                   | push                esi
            //   e8????????           |                     
            //   8b4d4c               | mov                 ecx, dword ptr [ebp + 0x4c]
            //   83c404               | add                 esp, 4
            //   8901                 | mov                 dword ptr [ecx], eax

        $sequence_8 = { 8b4c2460 89442404 89442408 8b442464 50 8d542408 51 }
            // n = 7, score = 200
            //   8b4c2460             | mov                 ecx, dword ptr [esp + 0x60]
            //   89442404             | mov                 dword ptr [esp + 4], eax
            //   89442408             | mov                 dword ptr [esp + 8], eax
            //   8b442464             | mov                 eax, dword ptr [esp + 0x64]
            //   50                   | push                eax
            //   8d542408             | lea                 edx, [esp + 8]
            //   51                   | push                ecx

        $sequence_9 = { 8b4804 51 50 e8???????? 83c40c 85c0 7508 }
            // n = 7, score = 200
            //   8b4804               | mov                 ecx, dword ptr [eax + 4]
            //   51                   | push                ecx
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   85c0                 | test                eax, eax
            //   7508                 | jne                 0xa

    condition:
        7 of them and filesize < 1867776
}