rule win_newsreels_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.newsreels."
        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.newsreels"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 48 8944241c 0f855dffffff 8b442414 83f803 756b }
            // n = 6, score = 100
            //   48                   | dec                 eax
            //   8944241c             | mov                 dword ptr [esp + 0x1c], eax
            //   0f855dffffff         | jne                 0xffffff63
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   83f803               | cmp                 eax, 3
            //   756b                 | jne                 0x6d

        $sequence_1 = { 68100e0000 51 50 52 e8???????? 8bd0 }
            // n = 6, score = 100
            //   68100e0000           | push                0xe10
            //   51                   | push                ecx
            //   50                   | push                eax
            //   52                   | push                edx
            //   e8????????           |                     
            //   8bd0                 | mov                 edx, eax

        $sequence_2 = { 8b16 8d442408 52 50 e8???????? 8d4c2410 57 }
            // n = 7, score = 100
            //   8b16                 | mov                 edx, dword ptr [esi]
            //   8d442408             | lea                 eax, [esp + 8]
            //   52                   | push                edx
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d4c2410             | lea                 ecx, [esp + 0x10]
            //   57                   | push                edi

        $sequence_3 = { 83c8f8 40 7516 39ac247c030000 7d37 5e 5d }
            // n = 7, score = 100
            //   83c8f8               | or                  eax, 0xfffffff8
            //   40                   | inc                 eax
            //   7516                 | jne                 0x18
            //   39ac247c030000       | cmp                 dword ptr [esp + 0x37c], ebp
            //   7d37                 | jge                 0x39
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp

        $sequence_4 = { b9e1000000 33c0 f3ab aa 8b3d???????? 85ff }
            // n = 6, score = 100
            //   b9e1000000           | mov                 ecx, 0xe1
            //   33c0                 | xor                 eax, eax
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   aa                   | stosb               byte ptr es:[edi], al
            //   8b3d????????         |                     
            //   85ff                 | test                edi, edi

        $sequence_5 = { 33db 2507000080 8974240c 7905 }
            // n = 4, score = 100
            //   33db                 | xor                 ebx, ebx
            //   2507000080           | and                 eax, 0x80000007
            //   8974240c             | mov                 dword ptr [esp + 0xc], esi
            //   7905                 | jns                 7

        $sequence_6 = { 8bac246c030000 56 8bc5 33f6 }
            // n = 4, score = 100
            //   8bac246c030000       | mov                 ebp, dword ptr [esp + 0x36c]
            //   56                   | push                esi
            //   8bc5                 | mov                 eax, ebp
            //   33f6                 | xor                 esi, esi

        $sequence_7 = { e8???????? 5f 5e 5d 33c0 5b 81c438080000 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp
            //   33c0                 | xor                 eax, eax
            //   5b                   | pop                 ebx
            //   81c438080000         | add                 esp, 0x838

        $sequence_8 = { 53 e8???????? 83c414 3bf5 75a4 57 }
            // n = 6, score = 100
            //   53                   | push                ebx
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   3bf5                 | cmp                 esi, ebp
            //   75a4                 | jne                 0xffffffa6
            //   57                   | push                edi

        $sequence_9 = { 8bb660020000 85f6 7409 56 e8???????? }
            // n = 5, score = 100
            //   8bb660020000         | mov                 esi, dword ptr [esi + 0x260]
            //   85f6                 | test                esi, esi
            //   7409                 | je                  0xb
            //   56                   | push                esi
            //   e8????????           |                     

    condition:
        7 of them and filesize < 65536
}