rule win_makadocs_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.makadocs."
        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.makadocs"
        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 = { 8d5c2410 c644243018 e8???????? c644243001 }
            // n = 4, score = 100
            //   8d5c2410             | lea                 ebx, [esp + 0x10]
            //   c644243018           | mov                 byte ptr [esp + 0x30], 0x18
            //   e8????????           |                     
            //   c644243001           | mov                 byte ptr [esp + 0x30], 1

        $sequence_1 = { 3be8 7ccb 33db 83ff03 0f8d8d000000 b803000000 }
            // n = 6, score = 100
            //   3be8                 | cmp                 ebp, eax
            //   7ccb                 | jl                  0xffffffcd
            //   33db                 | xor                 ebx, ebx
            //   83ff03               | cmp                 edi, 3
            //   0f8d8d000000         | jge                 0x93
            //   b803000000           | mov                 eax, 3

        $sequence_2 = { c644242c07 8b442434 51 83c0f0 89642420 8bf4 e8???????? }
            // n = 7, score = 100
            //   c644242c07           | mov                 byte ptr [esp + 0x2c], 7
            //   8b442434             | mov                 eax, dword ptr [esp + 0x34]
            //   51                   | push                ecx
            //   83c0f0               | add                 eax, -0x10
            //   89642420             | mov                 dword ptr [esp + 0x20], esp
            //   8bf4                 | mov                 esi, esp
            //   e8????????           |                     

        $sequence_3 = { 8bc6 e8???????? 833e00 7543 }
            // n = 4, score = 100
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   833e00               | cmp                 dword ptr [esi], 0
            //   7543                 | jne                 0x45

        $sequence_4 = { 8b11 50 8b4204 ffd0 c644246800 8b442420 eb33 }
            // n = 7, score = 100
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   50                   | push                eax
            //   8b4204               | mov                 eax, dword ptr [edx + 4]
            //   ffd0                 | call                eax
            //   c644246800           | mov                 byte ptr [esp + 0x68], 0
            //   8b442420             | mov                 eax, dword ptr [esp + 0x20]
            //   eb33                 | jmp                 0x35

        $sequence_5 = { c1e108 0bca c1e108 8bd1 c1ea1a 0fb692a0114200 8816 }
            // n = 7, score = 100
            //   c1e108               | shl                 ecx, 8
            //   0bca                 | or                  ecx, edx
            //   c1e108               | shl                 ecx, 8
            //   8bd1                 | mov                 edx, ecx
            //   c1ea1a               | shr                 edx, 0x1a
            //   0fb692a0114200       | movzx               edx, byte ptr [edx + 0x4211a0]
            //   8816                 | mov                 byte ptr [esi], dl

        $sequence_6 = { 6805400080 e8???????? 8b4b0c 50 51 }
            // n = 5, score = 100
            //   6805400080           | push                0x80004005
            //   e8????????           |                     
            //   8b4b0c               | mov                 ecx, dword ptr [ebx + 0xc]
            //   50                   | push                eax
            //   51                   | push                ecx

        $sequence_7 = { 8bc5 e8???????? c64424682a 8b08 8b41f4 51 8d4c242c }
            // n = 7, score = 100
            //   8bc5                 | mov                 eax, ebp
            //   e8????????           |                     
            //   c64424682a           | mov                 byte ptr [esp + 0x68], 0x2a
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b41f4               | mov                 eax, dword ptr [ecx - 0xc]
            //   51                   | push                ecx
            //   8d4c242c             | lea                 ecx, [esp + 0x2c]

        $sequence_8 = { 8b73fc 83ed04 83eb04 8d41f0 83ee10 3bc6 7444 }
            // n = 7, score = 100
            //   8b73fc               | mov                 esi, dword ptr [ebx - 4]
            //   83ed04               | sub                 ebp, 4
            //   83eb04               | sub                 ebx, 4
            //   8d41f0               | lea                 eax, [ecx - 0x10]
            //   83ee10               | sub                 esi, 0x10
            //   3bc6                 | cmp                 eax, esi
            //   7444                 | je                  0x46

        $sequence_9 = { 8d4804 52 51 e8???????? c745fcffffffff 8b450c 83c0f0 }
            // n = 7, score = 100
            //   8d4804               | lea                 ecx, [eax + 4]
            //   52                   | push                edx
            //   51                   | push                ecx
            //   e8????????           |                     
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   83c0f0               | add                 eax, -0x10

    condition:
        7 of them and filesize < 344064
}