rule win_horus_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.horus."
        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.horus"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 48894c2448 8b85a8040000 3d2a750000 0f8435010000 3d36c20100 743c 3dcbf80100 }
            // n = 7, score = 100
            //   48894c2448           | inc                 ecx
            //   8b85a8040000         | mov                 ebx, 0x97b8
            //   3d2a750000           | inc                 cx
            //   0f8435010000         | cmp                 ebp, dword ptr [eax + 0x58]
            //   3d36c20100           | mov                 eax, dword ptr [esp + 0x30]
            //   743c                 | cmp                 eax, eax
            //   3dcbf80100           | jne                 0x18b

        $sequence_1 = { 8000d9 48ffc8 48ffc9 75f5 4883659f00 488d45f7 48894597 }
            // n = 7, score = 100
            //   8000d9               | mov                 ebx, edx
            //   48ffc8               | dec                 eax
            //   48ffc9               | cmovns              ebx, dword ptr [ebp]
            //   75f5                 | dec                 eax
            //   4883659f00           | test                ebx, ebx
            //   488d45f7             | xor                 ecx, ecx
            //   48894597             | inc                 ecx

        $sequence_2 = { 3bc0 0f854a010000 4533c9 c7442430d05b0000 8b442430 3dd05b0000 0f84c8000000 }
            // n = 7, score = 100
            //   3bc0                 | xor                 edx, edx
            //   0f854a010000         | dec                 eax
            //   4533c9               | mov                 ecx, eax
            //   c7442430d05b0000     | inc                 ebp
            //   8b442430             | xor                 eax, eax
            //   3dd05b0000           | dec                 eax
            //   0f84c8000000         | mov                 edi, esi

        $sequence_3 = { ff15???????? 488bd8 4885c0 7453 c785100100000d800300 8b8510010000 3d124e0000 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   488bd8               | lea                 eax, [ebp - 0x78]
            //   4885c0               | dec                 eax
            //   7453                 | lea                 edx, [0xffffdea4]
            //   c785100100000d800300     | xor    ecx, ecx
            //   8b8510010000         | call                ebx
            //   3d124e0000           | test                eax, eax

        $sequence_4 = { 740b e8???????? 4533c0 488bd8 89b530030000 eb86 4439458c }
            // n = 7, score = 100
            //   740b                 | cmp                 edi, edx
            //   e8????????           |                     
            //   4533c0               | je                  0x20f
            //   488bd8               | dec                 esp
            //   89b530030000         | lea                 eax, [ebp + 0x320]
            //   eb86                 | dec                 eax
            //   4439458c             | lea                 edx, [0xffff67b1]

        $sequence_5 = { 744d 4c8d4538 488d15718dffff 33c9 ffd0 488bcb 85c0 }
            // n = 7, score = 100
            //   744d                 | cmp                 ecx, 0x1ccd7
            //   4c8d4538             | je                  0x2c2
            //   488d15718dffff       | je                  0x366
            //   33c9                 | mov                 dword ptr [ebp + 0x50], 0x1f83a
            //   ffd0                 | jmp                 0x250
            //   488bcb               | dec                 esp
            //   85c0                 | lea                 eax, [ebp - 0x38]

        $sequence_6 = { 4c8d4520 488d1509a7ffff 33c9 ffd0 498bcf 85c0 480f494d28 }
            // n = 7, score = 100
            //   4c8d4520             | dec                 ecx
            //   488d1509a7ffff       | lea                 ecx, [ebp + 4]
            //   33c9                 | dec                 eax
            //   ffd0                 | lea                 edx, [esp + 0x78]
            //   498bcf               | cmp                 dword ptr [esp + 0x7c], ebx
            //   85c0                 | je                  0x102
            //   480f494d28           | call                dword ptr [eax + 0x58]

        $sequence_7 = { 4c89b508020000 44896c2420 8b442420 413bc5 7429 3d49bc0100 7441 }
            // n = 7, score = 100
            //   4c89b508020000       | dec                 esp
            //   44896c2420           | mov                 dword ptr [ebp + 0x38], edi
            //   8b442420             | dec                 esp
            //   413bc5               | mov                 edi, dword ptr [ebp + 0x848]
            //   7429                 | jmp                 0xba
            //   3d49bc0100           | dec                 esp
            //   7441                 | mov                 edi, dword ptr [0x60]

        $sequence_8 = { 742d 4c8d45f0 488d1580bbfdff 33c9 ffd0 488bd7 85c0 }
            // n = 7, score = 100
            //   742d                 | cmp                 eax, 0x193fd
            //   4c8d45f0             | je                  0x439
            //   488d1580bbfdff       | cmp                 eax, 0x1e0cd
            //   33c9                 | je                  0x3f6
            //   ffd0                 | cmp                 eax, 0x1f61e
            //   488bd7               | jne                 0x47f
            //   85c0                 | je                  0x485

        $sequence_9 = { 48894c2478 3d4b0e0000 74e1 eb05 488b4c2478 3d4d050200 750f }
            // n = 7, score = 100
            //   48894c2478           | cmp                 eax, 0x1d7ef
            //   3d4b0e0000           | mov                 eax, dword ptr [esp + 0x30]
            //   74e1                 | cmp                 eax, 0x3f07
            //   eb05                 | je                  0x281
            //   488b4c2478           | cmp                 eax, 0x1d1e4
            //   3d4d050200           | je                  0x298
            //   750f                 | cmp                 eax, 0x1d7ef

    condition:
        7 of them and filesize < 887808
}