rule win_w32times_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "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 = { ffd3 837c241404 7416 68e8030000 ffd7 8d542410 }
            // n = 6, score = 200
            //   ffd3                 | call                ebx
            //   837c241404           | cmp                 dword ptr [esp + 0x14], 4
            //   7416                 | je                  0x18
            //   68e8030000           | push                0x3e8
            //   ffd7                 | call                edi
            //   8d542410             | lea                 edx, [esp + 0x10]

        $sequence_1 = { 7416 83f8ff 7411 50 ffd6 a1???????? 50 }
            // n = 7, score = 200
            //   7416                 | je                  0x18
            //   83f8ff               | cmp                 eax, -1
            //   7411                 | je                  0x13
            //   50                   | push                eax
            //   ffd6                 | call                esi
            //   a1????????           |                     
            //   50                   | push                eax

        $sequence_2 = { 68???????? 68???????? ff15???????? 83c41c e9???????? 8d9424ec010000 }
            // n = 6, score = 200
            //   68????????           |                     
            //   68????????           |                     
            //   ff15????????         |                     
            //   83c41c               | add                 esp, 0x1c
            //   e9????????           |                     
            //   8d9424ec010000       | lea                 edx, [esp + 0x1ec]

        $sequence_3 = { 6a00 ff15???????? 89442430 8bf0 }
            // n = 4, score = 200
            //   6a00                 | push                0
            //   ff15????????         |                     
            //   89442430             | mov                 dword ptr [esp + 0x30], eax
            //   8bf0                 | mov                 esi, eax

        $sequence_4 = { 57 56 c744242000000000 ff15???????? 56 ff15???????? 5f }
            // n = 7, score = 200
            //   57                   | push                edi
            //   56                   | push                esi
            //   c744242000000000     | mov                 dword ptr [esp + 0x20], 0
            //   ff15????????         |                     
            //   56                   | push                esi
            //   ff15????????         |                     
            //   5f                   | pop                 edi

        $sequence_5 = { 8bfd 83c9ff 33c0 8d9424ec010000 f2ae f7d1 2bf9 }
            // n = 7, score = 200
            //   8bfd                 | mov                 edi, ebp
            //   83c9ff               | or                  ecx, 0xffffffff
            //   33c0                 | xor                 eax, eax
            //   8d9424ec010000       | lea                 edx, [esp + 0x1ec]
            //   f2ae                 | repne scasb         al, byte ptr es:[edi]
            //   f7d1                 | not                 ecx
            //   2bf9                 | sub                 edi, ecx

        $sequence_6 = { 8bd8 ffd7 56 ffd7 53 ff15???????? }
            // n = 6, score = 200
            //   8bd8                 | mov                 ebx, eax
            //   ffd7                 | call                edi
            //   56                   | push                esi
            //   ffd7                 | call                edi
            //   53                   | push                ebx
            //   ff15????????         |                     

        $sequence_7 = { a1???????? 50 ffd3 892d???????? 68???????? ff15???????? 833d????????01 }
            // n = 7, score = 200
            //   a1????????           |                     
            //   50                   | push                eax
            //   ffd3                 | call                ebx
            //   892d????????         |                     
            //   68????????           |                     
            //   ff15????????         |                     
            //   833d????????01       |                     

        $sequence_8 = { b941000000 bf???????? f3ab b941000000 8dbc24f8050000 }
            // n = 5, score = 200
            //   b941000000           | mov                 ecx, 0x41
            //   bf????????           |                     
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   b941000000           | mov                 ecx, 0x41
            //   8dbc24f8050000       | lea                 edi, [esp + 0x5f8]

        $sequence_9 = { 83c40c 85c0 0f85e00c0000 8b4b04 6a04 }
            // n = 5, score = 200
            //   83c40c               | add                 esp, 0xc
            //   85c0                 | test                eax, eax
            //   0f85e00c0000         | jne                 0xce6
            //   8b4b04               | mov                 ecx, dword ptr [ebx + 4]
            //   6a04                 | push                4

    condition:
        7 of them and filesize < 122880
}