rule win_ralord_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.ralord."
        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.ralord"
        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 = { 488d45d8 488908 488d0d12bc0100 48894808 488d4dff 48894810 4c8d45f0 }
            // n = 7, score = 100
            //   488d45d8             | mov                 dword ptr [ebp - 0x30], 0
            //   488908               | dec                 eax
            //   488d0d12bc0100       | mov                 dword ptr [ebp - 0x28], 0x12
            //   48894808             | dec                 eax
            //   488d4dff             | mov                 dword ptr [ebp - 0x10], 2
            //   48894810             | dec                 eax
            //   4c8d45f0             | mov                 dword ptr [ebp], 1

        $sequence_1 = { 4883ec38 488daa80000000 80bd6f02000000 7419 41b801000000 488b8d58020000 488b9550020000 }
            // n = 7, score = 100
            //   4883ec38             | lea                 ecx, [ebp - 0x58]
            //   488daa80000000       | dec                 eax
            //   80bd6f02000000       | mov                 dword ptr [ebp - 0x30], ecx
            //   7419                 | dec                 eax
            //   41b801000000         | lea                 ecx, [0x19a8]
            //   488b8d58020000       | dec                 eax
            //   488b9550020000       | and                 eax, 0x78

        $sequence_2 = { 84c0 0f845bfeffff 4c896de8 8b45fc 8845f0 488d05085c0000 4889442420 }
            // n = 7, score = 100
            //   84c0                 | dec                 ebp
            //   0f845bfeffff         | mov                 eax, ebp
            //   4c896de8             | cmp                 eax, -1
            //   8b45fc               | je                  0x124
            //   8845f0               | inc                 eax
            //   488d05085c0000       | jmp                 0x96
            //   4889442420           | nop                 word ptr cs:[eax + eax]

        $sequence_3 = { 488901 4889c8 e9???????? 4c8d0534e30300 ba00001000 4c89f1 e8???????? }
            // n = 7, score = 100
            //   488901               | dec                 eax
            //   4889c8               | mov                 ecx, dword ptr [ebp - 0x30]
            //   e9????????           |                     
            //   4c8d0534e30300       | dec                 eax
            //   ba00001000           | test                edx, edx
            //   4c89f1               | je                  0x1e5
            //   e8????????           |                     

        $sequence_4 = { 4a8d1438 4983f80f 7733 4d39fc 0f840d010000 31c9 0f1f840000000000 }
            // n = 7, score = 100
            //   4a8d1438             | dec                 esp
            //   4983f80f             | mov                 eax, edi
            //   7733                 | jne                 0x7a6
            //   4d39fc               | dec                 ecx
            //   0f840d010000         | sub                 edi, eax
            //   31c9                 | dec                 ecx
            //   0f1f840000000000     | add                 esi, eax

        $sequence_5 = { 488b8538010000 4885c0 7412 f048ff08 750c 488d8d38010000 e8???????? }
            // n = 7, score = 100
            //   488b8538010000       | dec                 eax
            //   4885c0               | mov                 eax, dword ptr [ebp + 0xa28]
            //   7412                 | dec                 esp
            //   f048ff08             | mov                 eax, dword ptr [eax + 0x10]
            //   750c                 | dec                 eax
            //   488d8d38010000       | mov                 eax, dword ptr [ebp + 0xa28]
            //   e8????????           |                     

        $sequence_6 = { e9???????? 4983f904 0f83c4000000 31d2 4531d2 e9???????? 31c0 }
            // n = 7, score = 100
            //   e9????????           |                     
            //   4983f904             | dec                 ebp
            //   0f83c4000000         | test                esi, esi
            //   31d2                 | je                  0x91c
            //   4531d2               | dec                 eax
            //   e9????????           |                     
            //   31c0                 | mov                 ecx, dword ptr [ebp + 0x28]

        $sequence_7 = { 48894dc0 48c744242006000000 4c8d0d33610100 488d4dd8 e8???????? f645d801 7457 }
            // n = 7, score = 100
            //   48894dc0             | mov                 dword ptr [ebp - 0x10], eax
            //   48c744242006000000     | dec    eax
            //   4c8d0d33610100       | mov                 eax, dword ptr [eax]
            //   488d4dd8             | dec                 eax
            //   e8????????           |                     
            //   f645d801             | test                eax, eax
            //   7457                 | je                  0x32a

        $sequence_8 = { 48c7454801000000 488d7d10 488d5530 4889f9 e8???????? 488b55e0 }
            // n = 6, score = 100
            //   48c7454801000000     | or                  eax, 4
            //   488d7d10             | mov                 dword ptr [esi + 0x34], eax
            //   488d5530             | xor                 eax, eax
            //   4889f9               | dec                 eax
            //   e8????????           |                     
            //   488b55e0             | mov                 edx, ecx

        $sequence_9 = { eb0b 488b4578 488985e8000000 4c8d057ce20300 4c89f9 488b95e8000000 e8???????? }
            // n = 7, score = 100
            //   eb0b                 | jmp                 0xffffffa9
            //   488b4578             | mov                 ecx, 8
            //   488985e8000000       | mov                 edx, 0x818
            //   4c8d057ce20300       | ud2                 
            //   4c89f9               | movdqu              xmm7, xmmword ptr [ebp + 0xf8]
            //   488b95e8000000       | dec                 eax
            //   e8????????           |                     

    condition:
        7 of them and filesize < 798720
}