rule win_bredolab_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.bredolab."
        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.bredolab"
        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 = { 53 83ec04 e8???????? 8b1d???????? }
            // n = 4, score = 200
            //   53                   | push                ebx
            //   83ec04               | sub                 esp, 4
            //   e8????????           |                     
            //   8b1d????????         |                     

        $sequence_1 = { 89e5 57 56 53 81eccc010000 89c3 899560feffff }
            // n = 7, score = 200
            //   89e5                 | mov                 ebp, esp
            //   57                   | push                edi
            //   56                   | push                esi
            //   53                   | push                ebx
            //   81eccc010000         | sub                 esp, 0x1cc
            //   89c3                 | mov                 ebx, eax
            //   899560feffff         | mov                 dword ptr [ebp - 0x1a0], edx

        $sequence_2 = { 895c2404 893424 ff15???????? 83ec08 893424 ff15???????? }
            // n = 6, score = 200
            //   895c2404             | mov                 dword ptr [esp + 4], ebx
            //   893424               | mov                 dword ptr [esp], esi
            //   ff15????????         |                     
            //   83ec08               | sub                 esp, 8
            //   893424               | mov                 dword ptr [esp], esi
            //   ff15????????         |                     

        $sequence_3 = { 7fe0 89f3 8bb514f7ffff a1???????? 898514f7ffff 8d9520ffffff 8d4584 }
            // n = 7, score = 200
            //   7fe0                 | jg                  0xffffffe2
            //   89f3                 | mov                 ebx, esi
            //   8bb514f7ffff         | mov                 esi, dword ptr [ebp - 0x8ec]
            //   a1????????           |                     
            //   898514f7ffff         | mov                 dword ptr [ebp - 0x8ec], eax
            //   8d9520ffffff         | lea                 edx, [ebp - 0xe0]
            //   8d4584               | lea                 eax, [ebp - 0x7c]

        $sequence_4 = { 83f830 75f1 8b430c a804 0f8418ffffff }
            // n = 5, score = 200
            //   83f830               | cmp                 eax, 0x30
            //   75f1                 | jne                 0xfffffff3
            //   8b430c               | mov                 eax, dword ptr [ebx + 0xc]
            //   a804                 | test                al, 4
            //   0f8418ffffff         | je                  0xffffff1e

        $sequence_5 = { 55 89e5 53 83ec04 e8???????? 8b1d???????? 0fb6c8 }
            // n = 7, score = 200
            //   55                   | push                ebp
            //   89e5                 | mov                 ebp, esp
            //   53                   | push                ebx
            //   83ec04               | sub                 esp, 4
            //   e8????????           |                     
            //   8b1d????????         |                     
            //   0fb6c8               | movzx               ecx, al

        $sequence_6 = { c7042412000000 e8???????? 89742414 8b5508 89542410 c744240c03000000 }
            // n = 6, score = 200
            //   c7042412000000       | mov                 dword ptr [esp], 0x12
            //   e8????????           |                     
            //   89742414             | mov                 dword ptr [esp + 0x14], esi
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   89542410             | mov                 dword ptr [esp + 0x10], edx
            //   c744240c03000000     | mov                 dword ptr [esp + 0xc], 3

        $sequence_7 = { 89542404 c704240f000000 898510f7ffff e8???????? 89742414 897c2410 8b8d10f7ffff }
            // n = 7, score = 200
            //   89542404             | mov                 dword ptr [esp + 4], edx
            //   c704240f000000       | mov                 dword ptr [esp], 0xf
            //   898510f7ffff         | mov                 dword ptr [ebp - 0x8f0], eax
            //   e8????????           |                     
            //   89742414             | mov                 dword ptr [esp + 0x14], esi
            //   897c2410             | mov                 dword ptr [esp + 0x10], edi
            //   8b8d10f7ffff         | mov                 ecx, dword ptr [ebp - 0x8f0]

        $sequence_8 = { e8???????? 8b45d4 890424 ff15???????? 52 89c7 85c0 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8b45d4               | mov                 eax, dword ptr [ebp - 0x2c]
            //   890424               | mov                 dword ptr [esp], eax
            //   ff15????????         |                     
            //   52                   | push                edx
            //   89c7                 | mov                 edi, eax
            //   85c0                 | test                eax, eax

        $sequence_9 = { 51 8b4508 8b984c090000 89d8 8d65f4 }
            // n = 5, score = 200
            //   51                   | push                ecx
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b984c090000         | mov                 ebx, dword ptr [eax + 0x94c]
            //   89d8                 | mov                 eax, ebx
            //   8d65f4               | lea                 esp, [ebp - 0xc]

    condition:
        7 of them and filesize < 90112
}