rule win_lodeinfo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        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 = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { 8d7210 83e0c0 8bd3 8b5de4 8945dc 8b4508 2bd8 }
            // n = 7, score = 200
            //   8d7210               | lea                 esi, [edx + 0x10]
            //   83e0c0               | and                 eax, 0xffffffc0
            //   8bd3                 | mov                 edx, ebx
            //   8b5de4               | mov                 ebx, dword ptr [ebp - 0x1c]
            //   8945dc               | mov                 dword ptr [ebp - 0x24], eax
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   2bd8                 | sub                 ebx, eax

        $sequence_1 = { e8???????? 50 e8???????? 83c404 ba???????? ff7664 51 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   ba????????           |                     
            //   ff7664               | push                dword ptr [esi + 0x64]
            //   51                   | push                ecx

        $sequence_2 = { ff75bc e8???????? ff75c0 e8???????? ff75cc e8???????? }
            // n = 6, score = 200
            //   ff75bc               | push                dword ptr [ebp - 0x44]
            //   e8????????           |                     
            //   ff75c0               | push                dword ptr [ebp - 0x40]
            //   e8????????           |                     
            //   ff75cc               | push                dword ptr [ebp - 0x34]
            //   e8????????           |                     

        $sequence_3 = { 8b4e50 8b5648 894491fc 8b4d0c e8???????? 8b4e54 8b5648 }
            // n = 7, score = 200
            //   8b4e50               | mov                 ecx, dword ptr [esi + 0x50]
            //   8b5648               | mov                 edx, dword ptr [esi + 0x48]
            //   894491fc             | mov                 dword ptr [ecx + edx*4 - 4], eax
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   e8????????           |                     
            //   8b4e54               | mov                 ecx, dword ptr [esi + 0x54]
            //   8b5648               | mov                 edx, dword ptr [esi + 0x48]

        $sequence_4 = { ba01000000 d3e2 89559c 8b55b4 894da8 85d2 7554 }
            // n = 7, score = 200
            //   ba01000000           | mov                 edx, 1
            //   d3e2                 | shl                 edx, cl
            //   89559c               | mov                 dword ptr [ebp - 0x64], edx
            //   8b55b4               | mov                 edx, dword ptr [ebp - 0x4c]
            //   894da8               | mov                 dword ptr [ebp - 0x58], ecx
            //   85d2                 | test                edx, edx
            //   7554                 | jne                 0x56

        $sequence_5 = { 8b06 0fb67c0801 c1e708 0b7de4 897e10 8d4102 3bc2 }
            // n = 7, score = 200
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   0fb67c0801           | movzx               edi, byte ptr [eax + ecx + 1]
            //   c1e708               | shl                 edi, 8
            //   0b7de4               | or                  edi, dword ptr [ebp - 0x1c]
            //   897e10               | mov                 dword ptr [esi + 0x10], edi
            //   8d4102               | lea                 eax, [ecx + 2]
            //   3bc2                 | cmp                 eax, edx

        $sequence_6 = { 7528 0fb64d0f 0fb642ff c1e108 03c8 3b4b18 7516 }
            // n = 7, score = 200
            //   7528                 | jne                 0x2a
            //   0fb64d0f             | movzx               ecx, byte ptr [ebp + 0xf]
            //   0fb642ff             | movzx               eax, byte ptr [edx - 1]
            //   c1e108               | shl                 ecx, 8
            //   03c8                 | add                 ecx, eax
            //   3b4b18               | cmp                 ecx, dword ptr [ebx + 0x18]
            //   7516                 | jne                 0x18

        $sequence_7 = { 8806 33c0 5e 5b 8be5 5d }
            // n = 6, score = 200
            //   8806                 | mov                 byte ptr [esi], al
            //   33c0                 | xor                 eax, eax
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp

        $sequence_8 = { 5f 5e 5b 894491fc 33c0 8be5 5d }
            // n = 7, score = 200
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   894491fc             | mov                 dword ptr [ecx + edx*4 - 4], eax
            //   33c0                 | xor                 eax, eax
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp

        $sequence_9 = { 85c0 0f85ea000000 8b5604 83fa08 7527 837e1000 }
            // n = 6, score = 200
            //   85c0                 | test                eax, eax
            //   0f85ea000000         | jne                 0xf0
            //   8b5604               | mov                 edx, dword ptr [esi + 4]
            //   83fa08               | cmp                 edx, 8
            //   7527                 | jne                 0x29
            //   837e1000             | cmp                 dword ptr [esi + 0x10], 0

    condition:
        7 of them and filesize < 712704
}