rule win_miuref_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.miuref."
        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.miuref"
        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 = { 7555 8b4614 8d0c38 3b4e18 7613 68fc010000 68???????? }
            // n = 7, score = 200
            //   7555                 | jne                 0x57
            //   8b4614               | mov                 eax, dword ptr [esi + 0x14]
            //   8d0c38               | lea                 ecx, [eax + edi]
            //   3b4e18               | cmp                 ecx, dword ptr [esi + 0x18]
            //   7613                 | jbe                 0x15
            //   68fc010000           | push                0x1fc
            //   68????????           |                     

        $sequence_1 = { e8???????? 83c424 837dfc00 894508 750b 6a00 e8???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83c424               | add                 esp, 0x24
            //   837dfc00             | cmp                 dword ptr [ebp - 4], 0
            //   894508               | mov                 dword ptr [ebp + 8], eax
            //   750b                 | jne                 0xd
            //   6a00                 | push                0
            //   e8????????           |                     

        $sequence_2 = { 56 6a02 ff75fc e8???????? 8945f4 8d45f4 }
            // n = 6, score = 200
            //   56                   | push                esi
            //   6a02                 | push                2
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   8d45f4               | lea                 eax, [ebp - 0xc]

        $sequence_3 = { ff36 e8???????? 56 e8???????? 83c418 }
            // n = 5, score = 200
            //   ff36                 | push                dword ptr [esi]
            //   e8????????           |                     
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18

        $sequence_4 = { 7479 56 6a01 50 e8???????? 8bf8 83c40c }
            // n = 7, score = 200
            //   7479                 | je                  0x7b
            //   56                   | push                esi
            //   6a01                 | push                1
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   83c40c               | add                 esp, 0xc

        $sequence_5 = { 0f85c5000000 51 6a0d 68???????? 53 e8???????? 8bf8 }
            // n = 7, score = 200
            //   0f85c5000000         | jne                 0xcb
            //   51                   | push                ecx
            //   6a0d                 | push                0xd
            //   68????????           |                     
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax

        $sequence_6 = { 56 e8???????? 8bf8 8d456c 50 57 e8???????? }
            // n = 7, score = 200
            //   56                   | push                esi
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   8d456c               | lea                 eax, [ebp + 0x6c]
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     

        $sequence_7 = { c7802002000080000000 a1???????? c780240200008189f9b9 a1???????? c78028020000e089f9b9 a1???????? c7802c02000030da1769 }
            // n = 7, score = 200
            //   c7802002000080000000     | mov    dword ptr [eax + 0x220], 0x80
            //   a1????????           |                     
            //   c780240200008189f9b9     | mov    dword ptr [eax + 0x224], 0xb9f98981
            //   a1????????           |                     
            //   c78028020000e089f9b9     | mov    dword ptr [eax + 0x228], 0xb9f989e0
            //   a1????????           |                     
            //   c7802c02000030da1769     | mov    dword ptr [eax + 0x22c], 0x6917da30

        $sequence_8 = { 59 6a00 8bf0 8d45fc 50 57 ff36 }
            // n = 7, score = 200
            //   59                   | pop                 ecx
            //   6a00                 | push                0
            //   8bf0                 | mov                 esi, eax
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   57                   | push                edi
            //   ff36                 | push                dword ptr [esi]

        $sequence_9 = { 8901 33c0 40 c3 55 8bec 51 }
            // n = 7, score = 200
            //   8901                 | mov                 dword ptr [ecx], eax
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   51                   | push                ecx

    condition:
        7 of them and filesize < 180224
}