rule win_loki_mythic_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.loki_mythic."
        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.loki_mythic"
        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 = { 4829f0 8d4801 4889c3 488b05???????? 4885c0 7432 }
            // n = 6, score = 100
            //   4829f0               | dec                 ecx
            //   8d4801               | mov                 ecx, dword ptr [esp + 0x300]
            //   4889c3               | dec                 eax
            //   488b05????????       |                     
            //   4885c0               | test                eax, eax
            //   7432                 | je                  0x9c2

        $sequence_1 = { 44880c08 4883c101 4939c8 75ee 488b03 448b4308 4ac7040000000000 }
            // n = 7, score = 100
            //   44880c08             | nop                 
            //   4883c101             | mov                 edx, ebx
            //   4939c8               | dec                 eax
            //   75ee                 | mov                 ecx, edi
            //   488b03               | add                 ebx, 1
            //   448b4308             | dec                 eax
            //   4ac7040000000000     | test                esi, esi

        $sequence_2 = { 56 53 4883ec78 c744246400000000 c744246000000000 c744245c00000000 }
            // n = 6, score = 100
            //   56                   | dec                 eax
            //   53                   | mov                 ecx, esi
            //   4883ec78             | dec                 eax
            //   c744246400000000     | add                 esi, 0x10
            //   c744246000000000     | dec                 eax
            //   c744245c00000000     | mov                 ecx, ebx

        $sequence_3 = { 448b4c2448 4c8b442440 4889ca 0f1f840000000000 4883c201 803a00 75f7 }
            // n = 7, score = 100
            //   448b4c2448           | dec                 eax
            //   4c8b442440           | mov                 ecx, edi
            //   4889ca               | dec                 ecx
            //   0f1f840000000000     | mov                 dword ptr [ebp + 0x28], eax
            //   4883c201             | dec                 eax
            //   803a00               | mov                 dword ptr [esp + 0x30], eax
            //   75f7                 | dec                 eax

        $sequence_4 = { 4939c0 75ee e9???????? 4c89b42480000000 41be01000000 e9???????? }
            // n = 6, score = 100
            //   4939c0               | jne                 0x3ad
            //   75ee                 | dec                 ebp
            //   e9????????           |                     
            //   4c89b42480000000     | test                eax, eax
            //   41be01000000         | mov                 byte ptr [edx - 1], cl
            //   e9????????           |                     

        $sequence_5 = { 4889f8 0f1f8000000000 4883c001 803800 75f7 29f8 894630 }
            // n = 7, score = 100
            //   4889f8               | dec                 eax
            //   0f1f8000000000       | mov                 eax, dword ptr [ebx + 0x358]
            //   4883c001             | mov                 dword ptr [esp + 0x38], ecx
            //   803800               | dec                 eax
            //   75f7                 | test                eax, eax
            //   29f8                 | je                  0xca2
            //   894630               | call                eax

        $sequence_6 = { 4889442470 e8???????? 4c89f2 4889d9 4c8d742440 e8???????? 488b4c2428 }
            // n = 7, score = 100
            //   4889442470           | dec                 eax
            //   e8????????           |                     
            //   4c89f2               | lea                 edx, [ebp + 4]
            //   4889d9               | dec                 ecx
            //   4c8d742440           | mov                 esi, ebp
            //   e8????????           |                     
            //   488b4c2428           | dec                 eax

        $sequence_7 = { 4d89e8 4889f2 4889f9 e8???????? 488b0b 4889fa e8???????? }
            // n = 7, score = 100
            //   4d89e8               | dec                 eax
            //   4889f2               | mov                 ecx, esi
            //   4889f9               | dec                 ebp
            //   e8????????           |                     
            //   488b0b               | mov                 ecx, edi
            //   4889fa               | test                eax, eax
            //   e8????????           |                     

        $sequence_8 = { 83c102 4885c0 0f8468020000 ffd0 4889442470 4885c0 0f8461020000 }
            // n = 7, score = 100
            //   83c102               | mov                 edx, edi
            //   4885c0               | dec                 eax
            //   0f8468020000         | mov                 ecx, esi
            //   ffd0                 | test                eax, eax
            //   4889442470           | je                  0x651
            //   4885c0               | je                  0x662
            //   0f8461020000         | call                eax

        $sequence_9 = { 660fefc0 0f1103 0f114310 488d65d8 5b 5e 5f }
            // n = 7, score = 100
            //   660fefc0             | dec                 eax
            //   0f1103               | mov                 esi, edx
            //   0f114310             | push                ebx
            //   488d65d8             | dec                 eax
            //   5b                   | mov                 ebx, ecx
            //   5e                   | dec                 eax
            //   5f                   | sub                 esp, 0x88

    condition:
        7 of them and filesize < 263168
}