rule win_broler_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.broler."
        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.broler"
        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 = { 33db e8???????? 8d8d78dffcff e8???????? 83c41c c645fc02 83bd8cdffcff10 }
            // n = 7, score = 100
            //   33db                 | xor                 ebx, ebx
            //   e8????????           |                     
            //   8d8d78dffcff         | lea                 ecx, [ebp - 0x32088]
            //   e8????????           |                     
            //   83c41c               | add                 esp, 0x1c
            //   c645fc02             | mov                 byte ptr [ebp - 4], 2
            //   83bd8cdffcff10       | cmp                 dword ptr [ebp - 0x32074], 0x10

        $sequence_1 = { 40 3acb 75f1 6a11 8d4dc8 51 }
            // n = 6, score = 100
            //   40                   | inc                 eax
            //   3acb                 | cmp                 cl, bl
            //   75f1                 | jne                 0xfffffff3
            //   6a11                 | push                0x11
            //   8d4dc8               | lea                 ecx, [ebp - 0x38]
            //   51                   | push                ecx

        $sequence_2 = { 68???????? 8d4df0 51 c745f05c324100 e8???????? 8be5 }
            // n = 6, score = 100
            //   68????????           |                     
            //   8d4df0               | lea                 ecx, [ebp - 0x10]
            //   51                   | push                ecx
            //   c745f05c324100       | mov                 dword ptr [ebp - 0x10], 0x41325c
            //   e8????????           |                     
            //   8be5                 | mov                 esp, ebp

        $sequence_3 = { 50 8d8dacfeffff 51 895dfc }
            // n = 4, score = 100
            //   50                   | push                eax
            //   8d8dacfeffff         | lea                 ecx, [ebp - 0x154]
            //   51                   | push                ecx
            //   895dfc               | mov                 dword ptr [ebp - 4], ebx

        $sequence_4 = { 899d0cdffcff c78504dffcff04000000 395d18 7553 }
            // n = 4, score = 100
            //   899d0cdffcff         | mov                 dword ptr [ebp - 0x320f4], ebx
            //   c78504dffcff04000000     | mov    dword ptr [ebp - 0x320fc], 4
            //   395d18               | cmp                 dword ptr [ebp + 0x18], ebx
            //   7553                 | jne                 0x55

        $sequence_5 = { 8945f0 8d04c2 894c8608 8b86d0030000 2b45f0 8d0cc2 8b4508 }
            // n = 7, score = 100
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   8d04c2               | lea                 eax, [edx + eax*8]
            //   894c8608             | mov                 dword ptr [esi + eax*4 + 8], ecx
            //   8b86d0030000         | mov                 eax, dword ptr [esi + 0x3d0]
            //   2b45f0               | sub                 eax, dword ptr [ebp - 0x10]
            //   8d0cc2               | lea                 ecx, [edx + eax*8]
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]

        $sequence_6 = { 8b8d48ffffff 33ff 3bcf 7564 }
            // n = 4, score = 100
            //   8b8d48ffffff         | mov                 ecx, dword ptr [ebp - 0xb8]
            //   33ff                 | xor                 edi, edi
            //   3bcf                 | cmp                 ecx, edi
            //   7564                 | jne                 0x66

        $sequence_7 = { 51 53 57 8bc6 e8???????? 8bc3 c745940f000000 }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   53                   | push                ebx
            //   57                   | push                edi
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   8bc3                 | mov                 eax, ebx
            //   c745940f000000       | mov                 dword ptr [ebp - 0x6c], 0xf

        $sequence_8 = { 33c0 40 e9???????? 8365d800 c745dc0d094100 a1???????? 8d4dd8 }
            // n = 7, score = 100
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax
            //   e9????????           |                     
            //   8365d800             | and                 dword ptr [ebp - 0x28], 0
            //   c745dc0d094100       | mov                 dword ptr [ebp - 0x24], 0x41090d
            //   a1????????           |                     
            //   8d4dd8               | lea                 ecx, [ebp - 0x28]

        $sequence_9 = { ffd7 8d8d70fdffff 51 ff15???????? 83f8ff 7415 a802 }
            // n = 7, score = 100
            //   ffd7                 | call                edi
            //   8d8d70fdffff         | lea                 ecx, [ebp - 0x290]
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   83f8ff               | cmp                 eax, -1
            //   7415                 | je                  0x17
            //   a802                 | test                al, 2

    condition:
        7 of them and filesize < 275456
}