rule win_mylobot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "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 = { ff5068 5f 5e c3 }
            // n = 4, score = 1000
            //   ff5068               | call                dword ptr [eax + 0x68]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   c3                   | ret                 

        $sequence_1 = { 8981f8000000 55 8d442414 50 68???????? }
            // n = 5, score = 1000
            //   8981f8000000         | mov                 dword ptr [ecx + 0xf8], eax
            //   55                   | push                ebp
            //   8d442414             | lea                 eax, [esp + 0x14]
            //   50                   | push                eax
            //   68????????           |                     

        $sequence_2 = { 8938 56 ff15???????? 8bc7 5f 5e }
            // n = 6, score = 1000
            //   8938                 | mov                 dword ptr [eax], edi
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8bc7                 | mov                 eax, edi
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_3 = { 5d c3 8b54240c 8b442404 56 8bf0 }
            // n = 6, score = 1000
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8b54240c             | mov                 edx, dword ptr [esp + 0xc]
            //   8b442404             | mov                 eax, dword ptr [esp + 4]
            //   56                   | push                esi
            //   8bf0                 | mov                 esi, eax

        $sequence_4 = { a3???????? a1???????? 68???????? 56 56 ff501c }
            // n = 6, score = 1000
            //   a3????????           |                     
            //   a1????????           |                     
            //   68????????           |                     
            //   56                   | push                esi
            //   56                   | push                esi
            //   ff501c               | call                dword ptr [eax + 0x1c]

        $sequence_5 = { ff75f8 ff9100010000 33c0 85f6 7507 837df001 0f94c0 }
            // n = 7, score = 1000
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff9100010000         | call                dword ptr [ecx + 0x100]
            //   33c0                 | xor                 eax, eax
            //   85f6                 | test                esi, esi
            //   7507                 | jne                 9
            //   837df001             | cmp                 dword ptr [ebp - 0x10], 1
            //   0f94c0               | sete                al

        $sequence_6 = { ffd3 8b0d???????? 55 89812c010000 8d442414 50 }
            // n = 6, score = 1000
            //   ffd3                 | call                ebx
            //   8b0d????????         |                     
            //   55                   | push                ebp
            //   89812c010000         | mov                 dword ptr [ecx + 0x12c], eax
            //   8d442414             | lea                 eax, [esp + 0x14]
            //   50                   | push                eax

        $sequence_7 = { 50 50 6a1a 50 a1???????? ff9038010000 }
            // n = 6, score = 1000
            //   50                   | push                eax
            //   50                   | push                eax
            //   6a1a                 | push                0x1a
            //   50                   | push                eax
            //   a1????????           |                     
            //   ff9038010000         | call                dword ptr [eax + 0x138]

        $sequence_8 = { 51 51 6800000004 51 51 }
            // n = 5, score = 800
            //   51                   | push                ecx
            //   51                   | push                ecx
            //   6800000004           | push                0x4000000
            //   51                   | push                ecx
            //   51                   | push                ecx

        $sequence_9 = { 03c7 8955f8 3bd0 7356 90 }
            // n = 5, score = 800
            //   03c7                 | add                 eax, edi
            //   8955f8               | mov                 dword ptr [ebp - 8], edx
            //   3bd0                 | cmp                 edx, eax
            //   7356                 | jae                 0x58
            //   90                   | nop                 

        $sequence_10 = { 33ff 8bd8 8d8d3af1ffff 33c0 57 51 }
            // n = 6, score = 800
            //   33ff                 | xor                 edi, edi
            //   8bd8                 | mov                 ebx, eax
            //   8d8d3af1ffff         | lea                 ecx, [ebp - 0xec6]
            //   33c0                 | xor                 eax, eax
            //   57                   | push                edi
            //   51                   | push                ecx

        $sequence_11 = { 57 51 66898538f1ffff e8???????? 83c40c }
            // n = 5, score = 800
            //   57                   | push                edi
            //   51                   | push                ecx
            //   66898538f1ffff       | mov                 word ptr [ebp - 0xec8], ax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_12 = { 68fe070000 52 8d8562f7ffff 50 66899560f7ffff }
            // n = 5, score = 800
            //   68fe070000           | push                0x7fe
            //   52                   | push                edx
            //   8d8562f7ffff         | lea                 eax, [ebp - 0x89e]
            //   50                   | push                eax
            //   66899560f7ffff       | mov                 word ptr [ebp - 0x8a0], dx

        $sequence_13 = { 85c0 7477 8b4d08 8b550c }
            // n = 4, score = 800
            //   85c0                 | test                eax, eax
            //   7477                 | je                  0x79
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b550c               | mov                 edx, dword ptr [ebp + 0xc]

        $sequence_14 = { 741c 8d431c e8???????? 8b5318 }
            // n = 4, score = 800
            //   741c                 | je                  0x1e
            //   8d431c               | lea                 eax, [ebx + 0x1c]
            //   e8????????           |                     
            //   8b5318               | mov                 edx, dword ptr [ebx + 0x18]

        $sequence_15 = { 83f8ff 7554 6a01 6a08 ff15???????? 8d9558f5ffff }
            // n = 6, score = 800
            //   83f8ff               | cmp                 eax, -1
            //   7554                 | jne                 0x56
            //   6a01                 | push                1
            //   6a08                 | push                8
            //   ff15????????         |                     
            //   8d9558f5ffff         | lea                 edx, [ebp - 0xaa8]

    condition:
        7 of them and filesize < 8028160
}