rule win_wpbrutebot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.wpbrutebot."
        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.wpbrutebot"
        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 = { ff15???????? 83c404 807b5800 753f 83bf2809000002 7504 33d2 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   83c404               | add                 esp, 4
            //   807b5800             | cmp                 byte ptr [ebx + 0x58], 0
            //   753f                 | jne                 0x41
            //   83bf2809000002       | cmp                 dword ptr [edi + 0x928], 2
            //   7504                 | jne                 6
            //   33d2                 | xor                 edx, edx

        $sequence_1 = { e8???????? 83c40c 68???????? 682f270000 56 e8???????? 83c40c }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   68????????           |                     
            //   682f270000           | push                0x272f
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_2 = { 7c05 bb01000000 837e0400 740f 8b4e50 85c9 7408 }
            // n = 7, score = 100
            //   7c05                 | jl                  7
            //   bb01000000           | mov                 ebx, 1
            //   837e0400             | cmp                 dword ptr [esi + 4], 0
            //   740f                 | je                  0x11
            //   8b4e50               | mov                 ecx, dword ptr [esi + 0x50]
            //   85c9                 | test                ecx, ecx
            //   7408                 | je                  0xa

        $sequence_3 = { 8bec 51 c745fc03437200 33c0 0f1f00 8d4809 304c05fc }
            // n = 7, score = 100
            //   8bec                 | mov                 ebp, esp
            //   51                   | push                ecx
            //   c745fc03437200       | mov                 dword ptr [ebp - 4], 0x724303
            //   33c0                 | xor                 eax, eax
            //   0f1f00               | nop                 dword ptr [eax]
            //   8d4809               | lea                 ecx, [eax + 9]
            //   304c05fc             | xor                 byte ptr [ebp + eax - 4], cl

        $sequence_4 = { ffb6d40f0000 ffb6d00f0000 ffb3dc050000 ffd0 6a00 56 8bf8 }
            // n = 7, score = 100
            //   ffb6d40f0000         | push                dword ptr [esi + 0xfd4]
            //   ffb6d00f0000         | push                dword ptr [esi + 0xfd0]
            //   ffb3dc050000         | push                dword ptr [ebx + 0x5dc]
            //   ffd0                 | call                eax
            //   6a00                 | push                0
            //   56                   | push                esi
            //   8bf8                 | mov                 edi, eax

        $sequence_5 = { e8???????? 8d8d4ceaffff c645fcb9 e8???????? 81bd9cfaffff84030000 0f83e1000000 83ec18 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8d8d4ceaffff         | lea                 ecx, [ebp - 0x15b4]
            //   c645fcb9             | mov                 byte ptr [ebp - 4], 0xb9
            //   e8????????           |                     
            //   81bd9cfaffff84030000     | cmp    dword ptr [ebp - 0x564], 0x384
            //   0f83e1000000         | jae                 0xe7
            //   83ec18               | sub                 esp, 0x18

        $sequence_6 = { eb05 e8???????? 8bf0 83c410 81fe01000010 773c 81fe00000010 }
            // n = 7, score = 100
            //   eb05                 | jmp                 7
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   83c410               | add                 esp, 0x10
            //   81fe01000010         | cmp                 esi, 0x10000001
            //   773c                 | ja                  0x3e
            //   81fe00000010         | cmp                 esi, 0x10000000

        $sequence_7 = { 5f 5e 5b c3 8b8688070000 23868c070000 a804 }
            // n = 7, score = 100
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   c3                   | ret                 
            //   8b8688070000         | mov                 eax, dword ptr [esi + 0x788]
            //   23868c070000         | and                 eax, dword ptr [esi + 0x78c]
            //   a804                 | test                al, 4

        $sequence_8 = { ffb7ec0f0000 ffb7e80f0000 57 e8???????? ffb624040000 e8???????? 6a01 }
            // n = 7, score = 100
            //   ffb7ec0f0000         | push                dword ptr [edi + 0xfec]
            //   ffb7e80f0000         | push                dword ptr [edi + 0xfe8]
            //   57                   | push                edi
            //   e8????????           |                     
            //   ffb624040000         | push                dword ptr [esi + 0x424]
            //   e8????????           |                     
            //   6a01                 | push                1

        $sequence_9 = { 8b4c2404 81c1ec100000 8908 33c0 c3 8b442404 }
            // n = 6, score = 100
            //   8b4c2404             | mov                 ecx, dword ptr [esp + 4]
            //   81c1ec100000         | add                 ecx, 0x10ec
            //   8908                 | mov                 dword ptr [eax], ecx
            //   33c0                 | xor                 eax, eax
            //   c3                   | ret                 
            //   8b442404             | mov                 eax, dword ptr [esp + 4]

    condition:
        7 of them and filesize < 5134336
}