rule win_giftedcrook_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.giftedcrook."
        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.giftedcrook"
        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 = { 4c8d0daa510400 498bca 90 83e13f 498bc2 48c1f806 488d14c9 }
            // n = 7, score = 100
            //   4c8d0daa510400       | dec                 eax
            //   498bca               | mov                 edx, ebp
            //   90                   | dec                 ecx
            //   83e13f               | mov                 ecx, esi
            //   498bc2               | jne                 0xd8a
            //   48c1f806             | mov                 edx, 0x3b
            //   488d14c9             | dec                 eax

        $sequence_1 = { 4183ffff 7569 4883ff03 7609 488d1da9260600 eb09 7552 }
            // n = 7, score = 100
            //   4183ffff             | test                eax, eax
            //   7569                 | jne                 0x400
            //   4883ff03             | inc                 ecx
            //   7609                 | mov                 eax, 0xa
            //   488d1da9260600       | dec                 eax
            //   eb09                 | lea                 edx, [0x4a674]
            //   7552                 | dec                 eax

        $sequence_2 = { 4c8d058c9d0700 e8???????? e9???????? 448bce 4c8d05589d0700 }
            // n = 5, score = 100
            //   4c8d058c9d0700       | mov                 ecx, edi
            //   e8????????           |                     
            //   e9????????           |                     
            //   448bce               | dec                 eax
            //   4c8d05589d0700       | lea                 edx, [0x50176]

        $sequence_3 = { 8bd9 488364244800 4c8d442448 488d15d9ab0200 33c9 ff15???????? 488b4c2448 }
            // n = 7, score = 100
            //   8bd9                 | dec                 eax
            //   488364244800         | mov                 ecx, dword ptr [ecx + 0xe8]
            //   4c8d442448           | cmp                 dword ptr [ecx + 8], 0
            //   488d15d9ab0200       | jne                 0xa9
            //   33c9                 | dec                 eax
            //   ff15????????         |                     
            //   488b4c2448           | lea                 edx, [0x879b0]

        $sequence_4 = { 488d0d341f0400 4c8be8 e8???????? eb5b 410fb64001 49ffc0 3c20 }
            // n = 7, score = 100
            //   488d0d341f0400       | mov                 eax, esi
            //   4c8be8               | dec                 eax
            //   e8????????           |                     
            //   eb5b                 | lea                 edx, [0x3fe1d]
            //   410fb64001           | dec                 eax
            //   49ffc0               | mov                 ecx, ebp
            //   3c20                 | test                eax, eax

        $sequence_5 = { 0f8507020000 488b5710 4c8d8424e0000000 b917000000 ff15???????? 488b17 488d1d9ceb0600 }
            // n = 7, score = 100
            //   0f8507020000         | mov                 eax, esi
            //   488b5710             | dec                 eax
            //   4c8d8424e0000000     | test                ecx, ecx
            //   b917000000           | dec                 eax
            //   ff15????????         |                     
            //   488b17               | mov                 dword ptr [esp + 0x90], eax
            //   488d1d9ceb0600       | mov                 eax, dword ptr [edx]

        $sequence_6 = { 488b4c2450 488d15bcbd0500 41b803000000 e8???????? 85c0 0f85a2010000 488b4c2450 }
            // n = 7, score = 100
            //   488b4c2450           | dec                 eax
            //   488d15bcbd0500       | lea                 ecx, [ebp + 0xa00]
            //   41b803000000         | dec                 esp
            //   e8????????           |                     
            //   85c0                 | lea                 ecx, [0xac176]
            //   0f85a2010000         | inc                 esp
            //   488b4c2450           | mov                 dword ptr [esp + 0x20], esp

        $sequence_7 = { e8???????? 488bd8 4885c0 751e 488d0d6d1f0800 e8???????? 488bd8 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488bd8               | jbe                 0x415
            //   4885c0               | dec                 eax
            //   751e                 | lea                 edx, [0x666d4]
            //   488d0d6d1f0800       | dec                 eax
            //   e8????????           |                     
            //   488bd8               | mov                 ecx, edi

        $sequence_8 = { e8???????? 41b80c000000 488d15c6ea0400 488bcb 488bf8 e8???????? }
            // n = 6, score = 100
            //   e8????????           |                     
            //   41b80c000000         | mov                 edi, ecx
            //   488d15c6ea0400       | dec                 eax
            //   488bcb               | lea                 esi, [0xfffb8520]
            //   488bf8               | inc                 ebp
            //   e8????????           |                     

        $sequence_9 = { 4c8d0568280700 498bd5 488bcf e8???????? 488b75e7 488b1e 4885db }
            // n = 7, score = 100
            //   4c8d0568280700       | dec                 eax
            //   498bd5               | mov                 dword ptr [esi], eax
            //   488bcf               | jne                 0x13b4
            //   e8????????           |                     
            //   488b75e7             | dec                 esp
            //   488b1e               | mov                 eax, esi
            //   4885db               | dec                 eax

    condition:
        7 of them and filesize < 1605632
}