rule win_newsreels_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        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 = "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 = { 8a143a 88540c07 7cec b910000000 }
            // n = 4, score = 100
            //   8a143a               | mov                 dl, byte ptr [edx + edi]
            //   88540c07             | mov                 byte ptr [esp + ecx + 7], dl
            //   7cec                 | jl                  0xffffffee
            //   b910000000           | mov                 ecx, 0x10

        $sequence_1 = { 895c2418 8bde 2bd9 83c304 895c241c eb04 8b542424 }
            // n = 7, score = 100
            //   895c2418             | mov                 dword ptr [esp + 0x18], ebx
            //   8bde                 | mov                 ebx, esi
            //   2bd9                 | sub                 ebx, ecx
            //   83c304               | add                 ebx, 4
            //   895c241c             | mov                 dword ptr [esp + 0x1c], ebx
            //   eb04                 | jmp                 6
            //   8b542424             | mov                 edx, dword ptr [esp + 0x24]

        $sequence_2 = { 41 3d???????? 8a143a 88540c07 7cec b910000000 8d742408 }
            // n = 7, score = 100
            //   41                   | inc                 ecx
            //   3d????????           |                     
            //   8a143a               | mov                 dl, byte ptr [edx + edi]
            //   88540c07             | mov                 byte ptr [esp + ecx + 7], dl
            //   7cec                 | jl                  0xffffffee
            //   b910000000           | mov                 ecx, 0x10
            //   8d742408             | lea                 esi, [esp + 8]

        $sequence_3 = { 75c1 56 e8???????? 8b35???????? 83c404 53 }
            // n = 6, score = 100
            //   75c1                 | jne                 0xffffffc3
            //   56                   | push                esi
            //   e8????????           |                     
            //   8b35????????         |                     
            //   83c404               | add                 esp, 4
            //   53                   | push                ebx

        $sequence_4 = { 8b7c2450 83c408 be???????? 8b16 }
            // n = 4, score = 100
            //   8b7c2450             | mov                 edi, dword ptr [esp + 0x50]
            //   83c408               | add                 esp, 8
            //   be????????           |                     
            //   8b16                 | mov                 edx, dword ptr [esi]

        $sequence_5 = { 0fbe543e02 52 68???????? e8???????? 8a542b01 2d???????? 8bc8 }
            // n = 7, score = 100
            //   0fbe543e02           | movsx               edx, byte ptr [esi + edi + 2]
            //   52                   | push                edx
            //   68????????           |                     
            //   e8????????           |                     
            //   8a542b01             | mov                 dl, byte ptr [ebx + ebp + 1]
            //   2d????????           |                     
            //   8bc8                 | mov                 ecx, eax

        $sequence_6 = { 83c703 c1f902 83e13f 897c2424 8a81305d4000 88441efc 8a4c2ffd }
            // n = 7, score = 100
            //   83c703               | add                 edi, 3
            //   c1f902               | sar                 ecx, 2
            //   83e13f               | and                 ecx, 0x3f
            //   897c2424             | mov                 dword ptr [esp + 0x24], edi
            //   8a81305d4000         | mov                 al, byte ptr [ecx + 0x405d30]
            //   88441efc             | mov                 byte ptr [esi + ebx - 4], al
            //   8a4c2ffd             | mov                 cl, byte ptr [edi + ebp - 3]

        $sequence_7 = { 83d8ff 3bc3 0f8479020000 e9???????? be???????? 8d842495010000 }
            // n = 6, score = 100
            //   83d8ff               | sbb                 eax, -1
            //   3bc3                 | cmp                 eax, ebx
            //   0f8479020000         | je                  0x27f
            //   e9????????           |                     
            //   be????????           |                     
            //   8d842495010000       | lea                 eax, [esp + 0x195]

        $sequence_8 = { 6685ff 7507 bd01000000 eb07 bd8b130000 2bef }
            // n = 6, score = 100
            //   6685ff               | test                di, di
            //   7507                 | jne                 9
            //   bd01000000           | mov                 ebp, 1
            //   eb07                 | jmp                 9
            //   bd8b130000           | mov                 ebp, 0x138b
            //   2bef                 | sub                 ebp, edi

        $sequence_9 = { 56 ff15???????? 8b8c241c030000 8dbc240c010000 }
            // n = 4, score = 100
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8b8c241c030000       | mov                 ecx, dword ptr [esp + 0x31c]
            //   8dbc240c010000       | lea                 edi, [esp + 0x10c]

    condition:
        7 of them and filesize < 65536
}