rule win_w32times_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.w32times."
        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.w32times"
        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 = { 52 8d842404080000 68???????? 50 }
            // n = 4, score = 200
            //   52                   | push                edx
            //   8d842404080000       | lea                 eax, [esp + 0x804]
            //   68????????           |                     
            //   50                   | push                eax

        $sequence_1 = { 8dbc2418010000 f3ab 8b7d00 8bcb 8bd1 }
            // n = 5, score = 200
            //   8dbc2418010000       | lea                 edi, [esp + 0x118]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8b7d00               | mov                 edi, dword ptr [ebp]
            //   8bcb                 | mov                 ecx, ebx
            //   8bd1                 | mov                 edx, ecx

        $sequence_2 = { 33db b900400000 33c0 8d7c2414 f3ab 8d442414 50 }
            // n = 7, score = 200
            //   33db                 | xor                 ebx, ebx
            //   b900400000           | mov                 ecx, 0x4000
            //   33c0                 | xor                 eax, eax
            //   8d7c2414             | lea                 edi, [esp + 0x14]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8d442414             | lea                 eax, [esp + 0x14]
            //   50                   | push                eax

        $sequence_3 = { 8d8c2424040000 52 68f6010000 50 51 }
            // n = 5, score = 200
            //   8d8c2424040000       | lea                 ecx, [esp + 0x424]
            //   52                   | push                edx
            //   68f6010000           | push                0x1f6
            //   50                   | push                eax
            //   51                   | push                ecx

        $sequence_4 = { b941000000 8dbc241c020000 8bac2438060000 f3ab }
            // n = 4, score = 200
            //   b941000000           | mov                 ecx, 0x41
            //   8dbc241c020000       | lea                 edi, [esp + 0x21c]
            //   8bac2438060000       | mov                 ebp, dword ptr [esp + 0x638]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax

        $sequence_5 = { 83c41c c3 57 ffd5 56 ffd5 5f }
            // n = 7, score = 200
            //   83c41c               | add                 esp, 0x1c
            //   c3                   | ret                 
            //   57                   | push                edi
            //   ffd5                 | call                ebp
            //   56                   | push                esi
            //   ffd5                 | call                ebp
            //   5f                   | pop                 edi

        $sequence_6 = { 2bca 8db424e8000000 8bd1 8dbc24f4040000 c1e902 f3a5 }
            // n = 6, score = 200
            //   2bca                 | sub                 ecx, edx
            //   8db424e8000000       | lea                 esi, [esp + 0xe8]
            //   8bd1                 | mov                 edx, ecx
            //   8dbc24f4040000       | lea                 edi, [esp + 0x4f4]
            //   c1e902               | shr                 ecx, 2
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]

        $sequence_7 = { 50 56 ff15???????? 8bf8 85ff 751c ff15???????? }
            // n = 7, score = 200
            //   50                   | push                eax
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8bf8                 | mov                 edi, eax
            //   85ff                 | test                edi, edi
            //   751c                 | jne                 0x1e
            //   ff15????????         |                     

        $sequence_8 = { 683f000f00 6a00 56 ff15???????? 8bf8 }
            // n = 5, score = 200
            //   683f000f00           | push                0xf003f
            //   6a00                 | push                0
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8bf8                 | mov                 edi, eax

        $sequence_9 = { 8d4c2420 895c2418 51 68???????? ff15???????? 83c408 eb02 }
            // n = 7, score = 200
            //   8d4c2420             | lea                 ecx, [esp + 0x20]
            //   895c2418             | mov                 dword ptr [esp + 0x18], ebx
            //   51                   | push                ecx
            //   68????????           |                     
            //   ff15????????         |                     
            //   83c408               | add                 esp, 8
            //   eb02                 | jmp                 4

    condition:
        7 of them and filesize < 122880
}