rule win_makloader_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.makloader."
        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.makloader"
        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 = { 83c201 899538fdffff 83bd38fdffff08 7d2a 8b8538fdffff 8b8d38fdffff 8b952cfdffff }
            // n = 7, score = 200
            //   83c201               | add                 edx, 1
            //   899538fdffff         | mov                 dword ptr [ebp - 0x2c8], edx
            //   83bd38fdffff08       | cmp                 dword ptr [ebp - 0x2c8], 8
            //   7d2a                 | jge                 0x2c
            //   8b8538fdffff         | mov                 eax, dword ptr [ebp - 0x2c8]
            //   8b8d38fdffff         | mov                 ecx, dword ptr [ebp - 0x2c8]
            //   8b952cfdffff         | mov                 edx, dword ptr [ebp - 0x2d4]

        $sequence_1 = { 33d2 899514e5ffff 899518e5ffff 89951ce5ffff 899520e5ffff 6a44 6a00 }
            // n = 7, score = 200
            //   33d2                 | xor                 edx, edx
            //   899514e5ffff         | mov                 dword ptr [ebp - 0x1aec], edx
            //   899518e5ffff         | mov                 dword ptr [ebp - 0x1ae8], edx
            //   89951ce5ffff         | mov                 dword ptr [ebp - 0x1ae4], edx
            //   899520e5ffff         | mov                 dword ptr [ebp - 0x1ae0], edx
            //   6a44                 | push                0x44
            //   6a00                 | push                0

        $sequence_2 = { e8???????? 83c410 89859cfcffff c785a0fcffff00000000 8d85a0fcffff 50 6a00 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   89859cfcffff         | mov                 dword ptr [ebp - 0x364], eax
            //   c785a0fcffff00000000     | mov    dword ptr [ebp - 0x360], 0
            //   8d85a0fcffff         | lea                 eax, [ebp - 0x360]
            //   50                   | push                eax
            //   6a00                 | push                0

        $sequence_3 = { e8???????? 8b55fc 884201 b801000000 c1e000 8b4d08 0fb61401 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   884201               | mov                 byte ptr [edx + 1], al
            //   b801000000           | mov                 eax, 1
            //   c1e000               | shl                 eax, 0
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   0fb61401             | movzx               edx, byte ptr [ecx + eax]

        $sequence_4 = { 8b4d08 8988dc574200 68???????? e8???????? c9 c3 55 }
            // n = 7, score = 200
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8988dc574200         | mov                 dword ptr [eax + 0x4257dc], ecx
            //   68????????           |                     
            //   e8????????           |                     
            //   c9                   | leave               
            //   c3                   | ret                 
            //   55                   | push                ebp

        $sequence_5 = { c1e202 894415bc 894c15c0 b808000000 }
            // n = 4, score = 200
            //   c1e202               | shl                 edx, 2
            //   894415bc             | mov                 dword ptr [ebp + edx - 0x44], eax
            //   894c15c0             | mov                 dword ptr [ebp + edx - 0x40], ecx
            //   b808000000           | mov                 eax, 8

        $sequence_6 = { 8b4510 817848c0514200 7409 ff7048 e8???????? 59 c70701000000 }
            // n = 7, score = 200
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   817848c0514200       | cmp                 dword ptr [eax + 0x48], 0x4251c0
            //   7409                 | je                  0xb
            //   ff7048               | push                dword ptr [eax + 0x48]
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   c70701000000         | mov                 dword ptr [edi], 1

        $sequence_7 = { 8b4dfc e8???????? 8b4dfc 884132 ba01000000 6bc232 8b4d08 }
            // n = 7, score = 200
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   e8????????           |                     
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   884132               | mov                 byte ptr [ecx + 0x32], al
            //   ba01000000           | mov                 edx, 1
            //   6bc232               | imul                eax, edx, 0x32
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]

        $sequence_8 = { 8d85f8feffff 50 e8???????? 83c40c c785bcfdffff00000000 c785c0fdffff07000000 }
            // n = 6, score = 200
            //   8d85f8feffff         | lea                 eax, [ebp - 0x108]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   c785bcfdffff00000000     | mov    dword ptr [ebp - 0x244], 0
            //   c785c0fdffff07000000     | mov    dword ptr [ebp - 0x240], 7

        $sequence_9 = { 68???????? 8d8d24e5ffff e8???????? 8bc8 e8???????? }
            // n = 5, score = 200
            //   68????????           |                     
            //   8d8d24e5ffff         | lea                 ecx, [ebp - 0x1adc]
            //   e8????????           |                     
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     

    condition:
        7 of them and filesize < 335872
}