rule win_pony_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.pony."
        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.pony"
        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 = { 23d8 ff75f8 e8???????? ff7508 e8???????? 8bc3 5b }
            // n = 7, score = 800
            //   23d8                 | and                 ebx, eax
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   8bc3                 | mov                 eax, ebx
            //   5b                   | pop                 ebx

        $sequence_1 = { 55 8bec 83c4f8 56 833d????????00 747c 833d????????00 }
            // n = 7, score = 800
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83c4f8               | add                 esp, -8
            //   56                   | push                esi
            //   833d????????00       |                     
            //   747c                 | je                  0x7e
            //   833d????????00       |                     

        $sequence_2 = { 33fb 23fa 33fb 8d8c0f8e4379a6 034e38 }
            // n = 5, score = 800
            //   33fb                 | xor                 edi, ebx
            //   23fa                 | and                 edi, edx
            //   33fb                 | xor                 edi, ebx
            //   8d8c0f8e4379a6       | lea                 ecx, [edi + ecx - 0x5986bc72]
            //   034e38               | add                 ecx, dword ptr [esi + 0x38]

        $sequence_3 = { e8???????? 5b 89ec 5d c20800 53 8b442408 }
            // n = 7, score = 800
            //   e8????????           |                     
            //   5b                   | pop                 ebx
            //   89ec                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c20800               | ret                 8
            //   53                   | push                ebx
            //   8b442408             | mov                 eax, dword ptr [esp + 8]

        $sequence_4 = { e8???????? 50 50 ff7508 e8???????? e8???????? 68???????? }
            // n = 7, score = 800
            //   e8????????           |                     
            //   50                   | push                eax
            //   50                   | push                eax
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   e8????????           |                     
            //   68????????           |                     

        $sequence_5 = { 8bec 837d0800 741c 837d0c00 7416 ff7510 ff7508 }
            // n = 7, score = 800
            //   8bec                 | mov                 ebp, esp
            //   837d0800             | cmp                 dword ptr [ebp + 8], 0
            //   741c                 | je                  0x1e
            //   837d0c00             | cmp                 dword ptr [ebp + 0xc], 0
            //   7416                 | je                  0x18
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   ff7508               | push                dword ptr [ebp + 8]

        $sequence_6 = { 8d85c0feffff 50 683f000f00 e8???????? 0bc0 7515 83bdc0feffff00 }
            // n = 7, score = 800
            //   8d85c0feffff         | lea                 eax, [ebp - 0x140]
            //   50                   | push                eax
            //   683f000f00           | push                0xf003f
            //   e8????????           |                     
            //   0bc0                 | or                  eax, eax
            //   7515                 | jne                 0x17
            //   83bdc0feffff00       | cmp                 dword ptr [ebp - 0x140], 0

        $sequence_7 = { 034e0c c1c10e 03ca 8bfa 33f9 23f8 }
            // n = 6, score = 800
            //   034e0c               | add                 ecx, dword ptr [esi + 0xc]
            //   c1c10e               | rol                 ecx, 0xe
            //   03ca                 | add                 ecx, edx
            //   8bfa                 | mov                 edi, edx
            //   33f9                 | xor                 edi, ecx
            //   23f8                 | and                 edi, eax

        $sequence_8 = { 50 e8???????? 68???????? 8d45f8 50 e8???????? 53 }
            // n = 7, score = 800
            //   50                   | push                eax
            //   e8????????           |                     
            //   68????????           |                     
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   e8????????           |                     
            //   53                   | push                ebx

        $sequence_9 = { 8945e8 ff75fc ff75f8 68???????? e8???????? 8945e4 837dec00 }
            // n = 7, score = 800
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   68????????           |                     
            //   e8????????           |                     
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   837dec00             | cmp                 dword ptr [ebp - 0x14], 0

    condition:
        7 of them and filesize < 262144
}