rule win_mylobot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.mylobot."
        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.mylobot"
        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 = { 83c40c 8907 6a00 ff5644 50 ff5640 5f }
            // n = 7, score = 1000
            //   83c40c               | add                 esp, 0xc
            //   8907                 | mov                 dword ptr [edi], eax
            //   6a00                 | push                0
            //   ff5644               | call                dword ptr [esi + 0x44]
            //   50                   | push                eax
            //   ff5640               | call                dword ptr [esi + 0x40]
            //   5f                   | pop                 edi

        $sequence_1 = { 59 59 85c0 741b 8b442414 43 83c004 }
            // n = 7, score = 1000
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   85c0                 | test                eax, eax
            //   741b                 | je                  0x1d
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   43                   | inc                 ebx
            //   83c004               | add                 eax, 4

        $sequence_2 = { 59 3bf8 72d3 89742420 }
            // n = 4, score = 1000
            //   59                   | pop                 ecx
            //   3bf8                 | cmp                 edi, eax
            //   72d3                 | jb                  0xffffffd5
            //   89742420             | mov                 dword ptr [esp + 0x20], esi

        $sequence_3 = { 33c9 668908 8d44241c 50 }
            // n = 4, score = 1000
            //   33c9                 | xor                 ecx, ecx
            //   668908               | mov                 word ptr [eax], cx
            //   8d44241c             | lea                 eax, [esp + 0x1c]
            //   50                   | push                eax

        $sequence_4 = { 0f8732020000 8364241800 8d8424bc010000 6800010000 6a00 50 e8???????? }
            // n = 7, score = 1000
            //   0f8732020000         | ja                  0x238
            //   8364241800           | and                 dword ptr [esp + 0x18], 0
            //   8d8424bc010000       | lea                 eax, [esp + 0x1bc]
            //   6800010000           | push                0x100
            //   6a00                 | push                0
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_5 = { 7504 33c0 eb39 57 53 56 ff15???????? }
            // n = 7, score = 1000
            //   7504                 | jne                 6
            //   33c0                 | xor                 eax, eax
            //   eb39                 | jmp                 0x3b
            //   57                   | push                edi
            //   53                   | push                ebx
            //   56                   | push                esi
            //   ff15????????         |                     

        $sequence_6 = { 2be8 55 50 57 }
            // n = 4, score = 1000
            //   2be8                 | sub                 ebp, eax
            //   55                   | push                ebp
            //   50                   | push                eax
            //   57                   | push                edi

        $sequence_7 = { 3c02 7522 8b44240c 8b4c2410 }
            // n = 4, score = 1000
            //   3c02                 | cmp                 al, 2
            //   7522                 | jne                 0x24
            //   8b44240c             | mov                 eax, dword ptr [esp + 0xc]
            //   8b4c2410             | mov                 ecx, dword ptr [esp + 0x10]

        $sequence_8 = { 50 c745fc00000000 ff15???????? 8bf0 83feff 7420 }
            // n = 6, score = 800
            //   50                   | push                eax
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax
            //   83feff               | cmp                 esi, -1
            //   7420                 | je                  0x22

        $sequence_9 = { 2bc2 6a40 d1f8 6800300000 8d540014 52 }
            // n = 6, score = 800
            //   2bc2                 | sub                 eax, edx
            //   6a40                 | push                0x40
            //   d1f8                 | sar                 eax, 1
            //   6800300000           | push                0x3000
            //   8d540014             | lea                 edx, [eax + eax + 0x14]
            //   52                   | push                edx

        $sequence_10 = { e8???????? 8d95d8fdffff 52 8d85c8fbffff 68???????? }
            // n = 5, score = 800
            //   e8????????           |                     
            //   8d95d8fdffff         | lea                 edx, [ebp - 0x228]
            //   52                   | push                edx
            //   8d85c8fbffff         | lea                 eax, [ebp - 0x438]
            //   68????????           |                     

        $sequence_11 = { 8bf8 83c404 85ff 0f849b000000 8b75f8 }
            // n = 5, score = 800
            //   8bf8                 | mov                 edi, eax
            //   83c404               | add                 esp, 4
            //   85ff                 | test                edi, edi
            //   0f849b000000         | je                  0xa1
            //   8b75f8               | mov                 esi, dword ptr [ebp - 8]

        $sequence_12 = { ffd0 e9???????? 8b45fc 8b08 8b5108 50 }
            // n = 6, score = 800
            //   ffd0                 | call                eax
            //   e9????????           |                     
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b5108               | mov                 edx, dword ptr [ecx + 8]
            //   50                   | push                eax

        $sequence_13 = { 895c2418 3bf2 7420 8bc6 8b08 8b5004 }
            // n = 6, score = 800
            //   895c2418             | mov                 dword ptr [esp + 0x18], ebx
            //   3bf2                 | cmp                 esi, edx
            //   7420                 | je                  0x22
            //   8bc6                 | mov                 eax, esi
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b5004               | mov                 edx, dword ptr [eax + 4]

        $sequence_14 = { 0f84a2000000 8b08 8d55f4 52 6a00 }
            // n = 5, score = 800
            //   0f84a2000000         | je                  0xa8
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8d55f4               | lea                 edx, [ebp - 0xc]
            //   52                   | push                edx
            //   6a00                 | push                0

        $sequence_15 = { 8bf7 2bf3 8d460a 6a01 50 }
            // n = 5, score = 800
            //   8bf7                 | mov                 esi, edi
            //   2bf3                 | sub                 esi, ebx
            //   8d460a               | lea                 eax, [esi + 0xa]
            //   6a01                 | push                1
            //   50                   | push                eax

    condition:
        7 of them and filesize < 8028160
}