rule win_dustpan_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "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 = { 4c8d055debfeff 4403e2 4b8b84f8e0d00100 f644300880 0f8435040000 }
            // n = 5, score = 100
            //   4c8d055debfeff       | inc                 esp
            //   4403e2               | sub                 eax, eax
            //   4b8b84f8e0d00100     | dec                 eax
            //   f644300880           | mov                 eax, dword ptr [esp + 0x50]
            //   0f8435040000         | dec                 eax

        $sequence_1 = { 488bd1 4c8d050e760100 f642387f 7525 83f8ff 741a 83f8fe }
            // n = 7, score = 100
            //   488bd1               | dec                 eax
            //   4c8d050e760100       | lea                 edx, [esp + 0x5c]
            //   f642387f             | dec                 eax
            //   7525                 | mov                 ecx, dword ptr [eax + 0xc0]
            //   83f8ff               | dec                 eax
            //   741a                 | lea                 eax, [0x10403]
            //   83f8fe               | cmp                 dword ptr [ecx + 0x14], ebx

        $sequence_2 = { 488b0d???????? 488d15057f0100 488904ca 4883c428 c3 4053 }
            // n = 6, score = 100
            //   488b0d????????       |                     
            //   488d15057f0100       | dec                 eax
            //   488904ca             | lea                 edi, [ebx + 0x58]
            //   4883c428             | mov                 esi, 6
            //   c3                   | dec                 eax
            //   4053                 | lea                 eax, [0x10dfd]

        $sequence_3 = { 488d0c80 488d058d840100 488d0cc8 e8???????? }
            // n = 4, score = 100
            //   488d0c80             | lea                 ecx, [0x1a819]
            //   488d058d840100       | dec                 eax
            //   488d0cc8             | mov                 dword ptr [esp + 0x48], ecx
            //   e8????????           |                     

        $sequence_4 = { 7871 3b0d???????? 7369 4863d9 488d2debb30000 }
            // n = 5, score = 100
            //   7871                 | dec                 eax
            //   3b0d????????         |                     
            //   7369                 | sub                 esp, 0x20
            //   4863d9               | dec                 eax
            //   488d2debb30000       | mov                 ebx, ecx

        $sequence_5 = { 42888401a0ac0100 ffc7 ebde 488b05???????? }
            // n = 4, score = 100
            //   42888401a0ac0100     | dec                 eax
            //   ffc7                 | sub                 esp, 0x20
            //   ebde                 | dec                 eax
            //   488b05????????       |                     

        $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 = { 4883caff e8???????? 807d580a 4c8d052feafeff 740f }
            // n = 5, score = 100
            //   4883caff             | jb                  0x114
            //   e8????????           |                     
            //   807d580a             | dec                 eax
            //   4c8d052feafeff       | lea                 eax, [0x14a69]
            //   740f                 | dec                 eax

        $sequence_8 = { 488b5c2438 4883c420 5f c3 4c8b0d???????? 4c8d0512860100 }
            // n = 6, score = 100
            //   488b5c2438           | and                 edx, 0x1f
            //   4883c420             | dec                 eax
            //   5f                   | imul                edx, edx, 0x58
            //   c3                   | dec                 ecx
            //   4c8b0d????????       |                     
            //   4c8d0512860100       | add                 edx, dword ptr [eax + ecx*8]

        $sequence_9 = { 4883ec20 488d05571e0100 8bda 488bf9 488901 e8???????? f6c301 }
            // n = 7, score = 100
            //   4883ec20             | lea                 ecx, [0x7d30]
            //   488d05571e0100       | dec                 eax
            //   8bda                 | lea                 edx, [0x7d4c]
            //   488bf9               | dec                 eax
            //   488901               | lea                 ecx, [0x7d3d]
            //   e8????????           |                     
            //   f6c301               | nop                 

    condition:
        7 of them and filesize < 282624
}