rule win_lodeinfo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.lodeinfo."
        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.lodeinfo"
        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 = { 74d8 ebd2 6a0c 68???????? e8???????? 33ff 8b7508 }
            // n = 7, score = 200
            //   74d8                 | je                  0xffffffda
            //   ebd2                 | jmp                 0xffffffd4
            //   6a0c                 | push                0xc
            //   68????????           |                     
            //   e8????????           |                     
            //   33ff                 | xor                 edi, edi
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]

        $sequence_1 = { 8b4708 8975f8 8d048504000000 50 e8???????? 8b17 83c40c }
            // n = 7, score = 200
            //   8b4708               | mov                 eax, dword ptr [edi + 8]
            //   8975f8               | mov                 dword ptr [ebp - 8], esi
            //   8d048504000000       | lea                 eax, [eax*4 + 4]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b17                 | mov                 edx, dword ptr [edi]
            //   83c40c               | add                 esp, 0xc

        $sequence_2 = { 8d048504000000 50 e8???????? 8bf0 8b4708 }
            // n = 5, score = 200
            //   8d048504000000       | lea                 eax, [eax*4 + 4]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   8b4708               | mov                 eax, dword ptr [edi + 8]

        $sequence_3 = { 50 e8???????? 8b5c2418 83c404 ba???????? }
            // n = 5, score = 200
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b5c2418             | mov                 ebx, dword ptr [esp + 0x18]
            //   83c404               | add                 esp, 4
            //   ba????????           |                     

        $sequence_4 = { 8b4f0c 83e107 0fb67203 0fb64202 c1e608 0bf0 }
            // n = 6, score = 200
            //   8b4f0c               | mov                 ecx, dword ptr [edi + 0xc]
            //   83e107               | and                 ecx, 7
            //   0fb67203             | movzx               esi, byte ptr [edx + 3]
            //   0fb64202             | movzx               eax, byte ptr [edx + 2]
            //   c1e608               | shl                 esi, 8
            //   0bf0                 | or                  esi, eax

        $sequence_5 = { 03c7 8945e0 8d4302 03c7 8945dc 8bc1 2bc6 }
            // n = 7, score = 200
            //   03c7                 | add                 eax, edi
            //   8945e0               | mov                 dword ptr [ebp - 0x20], eax
            //   8d4302               | lea                 eax, [ebx + 2]
            //   03c7                 | add                 eax, edi
            //   8945dc               | mov                 dword ptr [ebp - 0x24], eax
            //   8bc1                 | mov                 eax, ecx
            //   2bc6                 | sub                 eax, esi

        $sequence_6 = { 7416 5f c7867001000039000000 b839000000 5e 5b 8be5 }
            // n = 7, score = 200
            //   7416                 | je                  0x18
            //   5f                   | pop                 edi
            //   c7867001000039000000     | mov    dword ptr [esi + 0x170], 0x39
            //   b839000000           | mov                 eax, 0x39
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8be5                 | mov                 esp, ebp

        $sequence_7 = { c7410c06000000 c7411008000000 c7411400000000 c7411800000000 c7410800000000 }
            // n = 5, score = 200
            //   c7410c06000000       | mov                 dword ptr [ecx + 0xc], 6
            //   c7411008000000       | mov                 dword ptr [ecx + 0x10], 8
            //   c7411400000000       | mov                 dword ptr [ecx + 0x14], 0
            //   c7411800000000       | mov                 dword ptr [ecx + 0x18], 0
            //   c7410800000000       | mov                 dword ptr [ecx + 8], 0

        $sequence_8 = { 3bcf 0f84440a0000 2bd8 8d3401 2bd0 }
            // n = 5, score = 200
            //   3bcf                 | cmp                 ecx, edi
            //   0f84440a0000         | je                  0xa4a
            //   2bd8                 | sub                 ebx, eax
            //   8d3401               | lea                 esi, [ecx + eax]
            //   2bd0                 | sub                 edx, eax

        $sequence_9 = { 8d1490 8bcf e8???????? 8b4df4 83c703 8b450c 83c404 }
            // n = 7, score = 200
            //   8d1490               | lea                 edx, [eax + edx*4]
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   83c703               | add                 edi, 3
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]
            //   83c404               | add                 esp, 4

    condition:
        7 of them and filesize < 712704
}