rule win_pipemon_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.pipemon."
        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.pipemon"
        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 = { 48ffc1 4983e801 75ee 4983c128 }
            // n = 4, score = 100
            //   48ffc1               | mov                 ecx, edi
            //   4983e801             | dec                 eax
            //   75ee                 | mov                 eax, dword ptr [edx + 8]
            //   4983c128             | dec                 eax

        $sequence_1 = { 4889442420 4183c9ff 4c8d8560040000 33d2 33c9 ff15???????? }
            // n = 6, score = 100
            //   4889442420           | dec                 eax
            //   4183c9ff             | sub                 esp, 0x20
            //   4c8d8560040000       | inc                 esp
            //   33d2                 | mov                 esi, ecx
            //   33c9                 | dec                 esp
            //   ff15????????         |                     

        $sequence_2 = { 4c89642430 895c2428 4889442420 4183c9ff 4c8d8560040000 33d2 33c9 }
            // n = 7, score = 100
            //   4c89642430           | dec                 eax
            //   895c2428             | xor                 eax, esp
            //   4889442420           | dec                 eax
            //   4183c9ff             | mov                 dword ptr [ebp + 0x47], eax
            //   4c8d8560040000       | dec                 eax
            //   33d2                 | mov                 edi, ecx
            //   33c9                 | dec                 eax

        $sequence_3 = { 8bc8 4903cc ff542428 8b7510 4c8bf8 448b7500 4903f4 }
            // n = 7, score = 100
            //   8bc8                 | je                  0x393
            //   4903cc               | nop                 dword ptr [eax]
            //   ff542428             | cmp                 dword ptr [ebp - 0x48], edi
            //   8b7510               | je                  0x372
            //   4c8bf8               | dec                 eax
            //   448b7500             | lea                 edx, [ebp - 0x50]
            //   4903f4               | dec                 eax

        $sequence_4 = { 488bc2 488d0d713a0100 48890b 488d5308 33c9 }
            // n = 5, score = 100
            //   488bc2               | inc                 esp
            //   488d0d713a0100       | mov                 eax, dword ptr [ebx + 0x20]
            //   48890b               | dec                 eax
            //   488d5308             | lea                 edx, [0x1f8ec]
            //   33c9                 | dec                 eax

        $sequence_5 = { 41b880000000 488d8d60020000 e8???????? 488d542450 488d8d60020000 ff15???????? }
            // n = 6, score = 100
            //   41b880000000         | mov                 eax, dword ptr [eax + 0x90]
            //   488d8d60020000       | movups              xmmword ptr [ecx + 0x70], xmm0
            //   e8????????           |                     
            //   488d542450           | movups              xmmword ptr [ecx + 0x80], xmm1
            //   488d8d60020000       | dec                 eax
            //   ff15????????         |                     

        $sequence_6 = { 488d153ac30000 b918000000 4c8d0526c30000 e8???????? 488bf8 4885c0 7412 }
            // n = 7, score = 100
            //   488d153ac30000       | mov                 dword ptr [ebp + 0x78], edx
            //   b918000000           | dec                 eax
            //   4c8d0526c30000       | inc                 edx
            //   e8????????           |                     
            //   488bf8               | dec                 eax
            //   4885c0               | mov                 dword ptr [ebp + 0x88], eax
            //   7412                 | dec                 eax

        $sequence_7 = { 74ed 488bd8 483b5c2440 e9???????? 0f1005???????? 0f1185d0010000 }
            // n = 6, score = 100
            //   74ed                 | cmp                 ecx, ebx
            //   488bd8               | je                  0xc7
            //   483b5c2440           | dec                 eax
            //   e9????????           |                     
            //   0f1005????????       |                     
            //   0f1185d0010000       | lea                 ebx, [0x1c9c6]

        $sequence_8 = { 488bc1 48c1f806 4c8d0550400100 83e23f 48c1e206 498b04c0 f644103801 }
            // n = 7, score = 100
            //   488bc1               | dec                 eax
            //   48c1f806             | lea                 ecx, [0x136ed]
            //   4c8d0550400100       | dec                 eax
            //   83e23f               | mov                 dword ptr [ebx], ecx
            //   48c1e206             | dec                 eax
            //   498b04c0             | lea                 edx, [ebx + 8]
            //   f644103801           | xor                 ecx, ecx

        $sequence_9 = { 750c 4d8b36 4d85f6 0f8518feffff 488b6c2420 4c636d3c 33c9 }
            // n = 7, score = 100
            //   750c                 | cmp                 eax, ecx
            //   4d8b36               | jb                  0x8fc
            //   4d85f6               | inc                 dx
            //   0f8518feffff         | inc                 cx
            //   488b6c2420           | cmp                 edx, ebx
            //   4c636d3c             | jb                  0x7fa
            //   33c9                 | mov                 ecx, dword ptr [ebx + ecx*8 + 0x28]

    condition:
        7 of them and filesize < 389120
}