rule win_dustpan_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.dustpan."
        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.dustpan"
        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 = { 488bd9 7614 488b4308 488d0d5d800100 fe0c01 803c0100 }
            // n = 6, score = 100
            //   488bd9               | dec                 eax
            //   7614                 | imul                esi, esi, 0x58
            //   488b4308             | mov                 al, byte ptr [ecx + esi + 8]
            //   488d0d5d800100       | dec                 ecx
            //   fe0c01               | inc                 eax
            //   803c0100             | test                al, al

        $sequence_1 = { 4c8d05d2ae0000 498bd6 488bcd e8???????? 85c0 751d }
            // n = 6, score = 100
            //   4c8d05d2ae0000       | lea                 edx, [0x7d4f]
            //   498bd6               | dec                 eax
            //   488bcd               | lea                 ecx, [0x7d30]
            //   e8????????           |                     
            //   85c0                 | dec                 eax
            //   751d                 | lea                 edx, [0x7d4c]

        $sequence_2 = { 4488443009 4584ed 7462 4b8b84f9e0d00100 8a4c3039 }
            // n = 5, score = 100
            //   4488443009           | dec                 eax
            //   4584ed               | add                 esp, 0x20
            //   7462                 | dec                 esp
            //   4b8b84f9e0d00100     | lea                 ebx, [0x1026d]
            //   8a4c3039             | dec                 eax

        $sequence_3 = { 57 4883ec20 488d05b7f30000 8bda 488bf9 488901 }
            // n = 6, score = 100
            //   57                   | mov                 esp, dword ptr [esp + 0x50]
            //   4883ec20             | je                  0x3d3
            //   488d05b7f30000       | dec                 eax
            //   8bda                 | and                 dword ptr [esp + 0x20], 0
            //   488bf9               | dec                 eax
            //   488901               | lea                 eax, [0x10271]

        $sequence_4 = { 488d0563010100 4a8b0ce0 41f6440f0880 0f84fe020000 33db 4d8be5 }
            // n = 6, score = 100
            //   488d0563010100       | dec                 esp
            //   4a8b0ce0             | mov                 edx, ecx
            //   41f6440f0880         | dec                 ebp
            //   0f84fe020000         | test                ecx, ecx
            //   33db                 | dec                 esp
            //   4d8be5               | mov                 esp, dword ptr [esp + 0x50]

        $sequence_5 = { 488b442450 488d0df9ff0000 488b0cc1 44897c2444 4c8b7c2460 }
            // n = 5, score = 100
            //   488b442450           | test                eax, eax
            //   488d0df9ff0000       | jne                 0x19cc
            //   488b0cc1             | dec                 eax
            //   44897c2444           | lea                 eax, [0x67e5]
            //   4c8b7c2460           | cmp                 si, word ptr [eax]

        $sequence_6 = { 4883c014 8918 e8???????? 4c8d15e30a0100 4885c0 7404 }
            // n = 6, score = 100
            //   4883c014             | mov                 eax, ebp
            //   8918                 | xor                 edx, edx
            //   e8????????           |                     
            //   4c8d15e30a0100       | dec                 eax
            //   4885c0               | lea                 ecx, [0x7cf0]
            //   7404                 | dec                 eax

        $sequence_7 = { 0f859a000000 3915???????? 0f858e000000 b904010000 c705????????01000000 e8???????? }
            // n = 6, score = 100
            //   0f859a000000         | dec                 eax
            //   3915????????         |                     
            //   0f858e000000         | lea                 eax, [0x101b2]
            //   b904010000           | dec                 eax
            //   c705????????01000000     |     
            //   e8????????           |                     

        $sequence_8 = { 0fb603 4238bc0080b90100 74e4 0fb60b 420fbe840180b90100 85c0 }
            // n = 6, score = 100
            //   0fb603               | dec                 eax
            //   4238bc0080b90100     | mov                 eax, dword ptr [ebx + 8]
            //   74e4                 | dec                 eax
            //   0fb60b               | lea                 ecx, [0x1805d]
            //   420fbe840180b90100     | dec    byte ptr [ecx + eax]
            //   85c0                 | dec                 eax

        $sequence_9 = { f0ff09 7517 488d0553050100 488b4c2430 483bc8 }
            // n = 5, score = 100
            //   f0ff09               | mov                 eax, edi
            //   7517                 | dec                 eax
            //   488d0553050100       | add                 esp, 0x20
            //   488b4c2430           | pop                 edi
            //   483bc8               | ret                 

    condition:
        7 of them and filesize < 282624
}