rule win_latentbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.latentbot."
        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.latentbot"
        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 = { 803c0800 75f9 c3 33d2 663911 7423 8bc1 }
            // n = 7, score = 100
            //   803c0800             | cmp                 byte ptr [eax + ecx], 0
            //   75f9                 | jne                 0xfffffffb
            //   c3                   | ret                 
            //   33d2                 | xor                 edx, edx
            //   663911               | cmp                 word ptr [ecx], dx
            //   7423                 | je                  0x25
            //   8bc1                 | mov                 eax, ecx

        $sequence_1 = { 8945d4 8d45b4 50 685a284000 ffd6 8b45fc 5e }
            // n = 7, score = 100
            //   8945d4               | mov                 dword ptr [ebp - 0x2c], eax
            //   8d45b4               | lea                 eax, [ebp - 0x4c]
            //   50                   | push                eax
            //   685a284000           | push                0x40285a
            //   ffd6                 | call                esi
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   5e                   | pop                 esi

        $sequence_2 = { 85ff 77ee 83f90a 0f8733010000 8bf9 c1e709 }
            // n = 6, score = 100
            //   85ff                 | test                edi, edi
            //   77ee                 | ja                  0xfffffff0
            //   83f90a               | cmp                 ecx, 0xa
            //   0f8733010000         | ja                  0x139
            //   8bf9                 | mov                 edi, ecx
            //   c1e709               | shl                 edi, 9

        $sequence_3 = { 75f9 8d1409 6689542424 8b4c2424 83c102 8d542414 }
            // n = 6, score = 100
            //   75f9                 | jne                 0xfffffffb
            //   8d1409               | lea                 edx, [ecx + ecx]
            //   6689542424           | mov                 word ptr [esp + 0x24], dx
            //   8b4c2424             | mov                 ecx, dword ptr [esp + 0x24]
            //   83c102               | add                 ecx, 2
            //   8d542414             | lea                 edx, [esp + 0x14]

        $sequence_4 = { e8???????? 8bf8 85ff 7449 e8???????? 8bd8 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   85ff                 | test                edi, edi
            //   7449                 | je                  0x4b
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax

        $sequence_5 = { 4d 85c0 ebe4 41 8b4820 4d 2bc8 }
            // n = 7, score = 100
            //   4d                   | dec                 ebp
            //   85c0                 | test                eax, eax
            //   ebe4                 | jmp                 0xffffffe6
            //   41                   | inc                 ecx
            //   8b4820               | mov                 ecx, dword ptr [eax + 0x20]
            //   4d                   | dec                 ebp
            //   2bc8                 | sub                 ecx, eax

        $sequence_6 = { 4c 8b442440 44 8d4f04 48 8d4c2448 }
            // n = 6, score = 100
            //   4c                   | dec                 esp
            //   8b442440             | mov                 eax, dword ptr [esp + 0x40]
            //   44                   | inc                 esp
            //   8d4f04               | lea                 ecx, [edi + 4]
            //   48                   | dec                 eax
            //   8d4c2448             | lea                 ecx, [esp + 0x48]

        $sequence_7 = { 895f04 83c008 83c708 3bc1 72ec 83e207 }
            // n = 6, score = 100
            //   895f04               | mov                 dword ptr [edi + 4], ebx
            //   83c008               | add                 eax, 8
            //   83c708               | add                 edi, 8
            //   3bc1                 | cmp                 eax, ecx
            //   72ec                 | jb                  0xffffffee
            //   83e207               | and                 edx, 7

        $sequence_8 = { 81f900100000 72d7 33c0 5e c9 c3 8b540101 }
            // n = 7, score = 100
            //   81f900100000         | cmp                 ecx, 0x1000
            //   72d7                 | jb                  0xffffffd9
            //   33c0                 | xor                 eax, eax
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c3                   | ret                 
            //   8b540101             | mov                 edx, dword ptr [ecx + eax + 1]

        $sequence_9 = { 54 6a0e 56 8b476e ffd0 8b16 33c9 }
            // n = 7, score = 100
            //   54                   | push                esp
            //   6a0e                 | push                0xe
            //   56                   | push                esi
            //   8b476e               | mov                 eax, dword ptr [edi + 0x6e]
            //   ffd0                 | call                eax
            //   8b16                 | mov                 edx, dword ptr [esi]
            //   33c9                 | xor                 ecx, ecx

    condition:
        7 of them and filesize < 401408
}