rule win_htbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.htbot."
        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.htbot"
        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 = { 837b0c00 8d7b0c 7c32 8b10 3b13 752c e8???????? }
            // n = 7, score = 100
            //   837b0c00             | cmp                 dword ptr [ebx + 0xc], 0
            //   8d7b0c               | lea                 edi, [ebx + 0xc]
            //   7c32                 | jl                  0x34
            //   8b10                 | mov                 edx, dword ptr [eax]
            //   3b13                 | cmp                 edx, dword ptr [ebx]
            //   752c                 | jne                 0x2e
            //   e8????????           |                     

        $sequence_1 = { 56 56 8d4c2424 51 68???????? }
            // n = 5, score = 100
            //   56                   | push                esi
            //   56                   | push                esi
            //   8d4c2424             | lea                 ecx, [esp + 0x24]
            //   51                   | push                ecx
            //   68????????           |                     

        $sequence_2 = { 50 81ec14080000 a1???????? 33c4 89842410080000 53 55 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   81ec14080000         | sub                 esp, 0x814
            //   a1????????           |                     
            //   33c4                 | xor                 eax, esp
            //   89842410080000       | mov                 dword ptr [esp + 0x810], eax
            //   53                   | push                ebx
            //   55                   | push                ebp

        $sequence_3 = { 8b442434 8bdf e8???????? 83c7f0 c684244804000001 8d4f0c 83caff }
            // n = 7, score = 100
            //   8b442434             | mov                 eax, dword ptr [esp + 0x34]
            //   8bdf                 | mov                 ebx, edi
            //   e8????????           |                     
            //   83c7f0               | add                 edi, -0x10
            //   c684244804000001     | mov                 byte ptr [esp + 0x448], 1
            //   8d4f0c               | lea                 ecx, [edi + 0xc]
            //   83caff               | or                  edx, 0xffffffff

        $sequence_4 = { 8d4c245c c68424b410000004 e8???????? 8b442430 8b00 8b8c24b8100000 8d542448 }
            // n = 7, score = 100
            //   8d4c245c             | lea                 ecx, [esp + 0x5c]
            //   c68424b410000004     | mov                 byte ptr [esp + 0x10b4], 4
            //   e8????????           |                     
            //   8b442430             | mov                 eax, dword ptr [esp + 0x30]
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   8b8c24b8100000       | mov                 ecx, dword ptr [esp + 0x10b8]
            //   8d542448             | lea                 edx, [esp + 0x48]

        $sequence_5 = { 51 8b4ef0 8b11 8b4210 83c6f0 89642428 8bdc }
            // n = 7, score = 100
            //   51                   | push                ecx
            //   8b4ef0               | mov                 ecx, dword ptr [esi - 0x10]
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   8b4210               | mov                 eax, dword ptr [edx + 0x10]
            //   83c6f0               | add                 esi, -0x10
            //   89642428             | mov                 dword ptr [esp + 0x28], esp
            //   8bdc                 | mov                 ebx, esp

        $sequence_6 = { 2bc7 83f8ff 89442420 0f8515020000 8bce 8d742470 8d542418 }
            // n = 7, score = 100
            //   2bc7                 | sub                 eax, edi
            //   83f8ff               | cmp                 eax, -1
            //   89442420             | mov                 dword ptr [esp + 0x20], eax
            //   0f8515020000         | jne                 0x21b
            //   8bce                 | mov                 ecx, esi
            //   8d742470             | lea                 esi, [esp + 0x70]
            //   8d542418             | lea                 edx, [esp + 0x18]

        $sequence_7 = { 8bd8 52 8d442418 e8???????? 8b442414 6a2e 50 }
            // n = 7, score = 100
            //   8bd8                 | mov                 ebx, eax
            //   52                   | push                edx
            //   8d442418             | lea                 eax, [esp + 0x18]
            //   e8????????           |                     
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   6a2e                 | push                0x2e
            //   50                   | push                eax

        $sequence_8 = { 8b442444 6aff 50 ff15???????? 8b4c2444 51 }
            // n = 6, score = 100
            //   8b442444             | mov                 eax, dword ptr [esp + 0x44]
            //   6aff                 | push                -1
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8b4c2444             | mov                 ecx, dword ptr [esp + 0x44]
            //   51                   | push                ecx

        $sequence_9 = { 8b6c242c 8944241c 0f85fa020000 8b7508 8b4ef0 8b11 8b4210 }
            // n = 7, score = 100
            //   8b6c242c             | mov                 ebp, dword ptr [esp + 0x2c]
            //   8944241c             | mov                 dword ptr [esp + 0x1c], eax
            //   0f85fa020000         | jne                 0x300
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   8b4ef0               | mov                 ecx, dword ptr [esi - 0x10]
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   8b4210               | mov                 eax, dword ptr [edx + 0x10]

    condition:
        7 of them and filesize < 196608
}