rule win_pinchduke_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.pinchduke."
        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.pinchduke"
        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 = { 6801000080 ff15???????? 85c0 7575 53 56 57 }
            // n = 7, score = 100
            //   6801000080           | push                0x80000001
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7575                 | jne                 0x77
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi

        $sequence_1 = { 50 c685c8f8ffff00 e8???????? ff750c ff7508 e8???????? 83c444 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   c685c8f8ffff00       | mov                 byte ptr [ebp - 0x738], 0
            //   e8????????           |                     
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   83c444               | add                 esp, 0x44

        $sequence_2 = { 803800 8bc8 7416 41 803900 75fa eb0a }
            // n = 7, score = 100
            //   803800               | cmp                 byte ptr [eax], 0
            //   8bc8                 | mov                 ecx, eax
            //   7416                 | je                  0x18
            //   41                   | inc                 ecx
            //   803900               | cmp                 byte ptr [ecx], 0
            //   75fa                 | jne                 0xfffffffc
            //   eb0a                 | jmp                 0xc

        $sequence_3 = { 8b4530 0faf4534 c1e80a 0faf452c c1e80a 50 }
            // n = 6, score = 100
            //   8b4530               | mov                 eax, dword ptr [ebp + 0x30]
            //   0faf4534             | imul                eax, dword ptr [ebp + 0x34]
            //   c1e80a               | shr                 eax, 0xa
            //   0faf452c             | imul                eax, dword ptr [ebp + 0x2c]
            //   c1e80a               | shr                 eax, 0xa
            //   50                   | push                eax

        $sequence_4 = { 50 c6400561 e8???????? 59 6a32 ffd6 6a32 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   c6400561             | mov                 byte ptr [eax + 5], 0x61
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   6a32                 | push                0x32
            //   ffd6                 | call                esi
            //   6a32                 | push                0x32

        $sequence_5 = { 50 7513 e8???????? 8b4d0c 8d45eb 50 e8???????? }
            // n = 7, score = 100
            //   50                   | push                eax
            //   7513                 | jne                 0x15
            //   e8????????           |                     
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   8d45eb               | lea                 eax, [ebp - 0x15]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_6 = { 85db 7e07 0fbe4c0201 eb03 33c9 41 8b75f8 }
            // n = 7, score = 100
            //   85db                 | test                ebx, ebx
            //   7e07                 | jle                 9
            //   0fbe4c0201           | movsx               ecx, byte ptr [edx + eax + 1]
            //   eb03                 | jmp                 5
            //   33c9                 | xor                 ecx, ecx
            //   41                   | inc                 ecx
            //   8b75f8               | mov                 esi, dword ptr [ebp - 8]

        $sequence_7 = { 8d450c 53 50 e8???????? 83c40c ff7510 ff7514 }
            // n = 7, score = 100
            //   8d450c               | lea                 eax, [ebp + 0xc]
            //   53                   | push                ebx
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   ff7514               | push                dword ptr [ebp + 0x14]

        $sequence_8 = { 334824 c1c605 334838 c1ca02 d1c1 8db437d6c162ca 8b7df8 }
            // n = 7, score = 100
            //   334824               | xor                 ecx, dword ptr [eax + 0x24]
            //   c1c605               | rol                 esi, 5
            //   334838               | xor                 ecx, dword ptr [eax + 0x38]
            //   c1ca02               | ror                 edx, 2
            //   d1c1                 | rol                 ecx, 1
            //   8db437d6c162ca       | lea                 esi, [edi + esi - 0x359d3e2a]
            //   8b7df8               | mov                 edi, dword ptr [ebp - 8]

        $sequence_9 = { 8d450c 83ec10 8bcc 50 e8???????? 8d45e3 }
            // n = 6, score = 100
            //   8d450c               | lea                 eax, [ebp + 0xc]
            //   83ec10               | sub                 esp, 0x10
            //   8bcc                 | mov                 ecx, esp
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d45e3               | lea                 eax, [ebp - 0x1d]

    condition:
        7 of them and filesize < 223680
}