rule win_newsreels_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        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 = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 ffd6 8b442418 50 ffd6 8d4c2450 }
            // n = 6, score = 100
            //   52                   | push                edx
            //   ffd6                 | call                esi
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   50                   | push                eax
            //   ffd6                 | call                esi
            //   8d4c2450             | lea                 ecx, dword ptr [esp + 0x50]

        $sequence_1 = { 6a30 8d4c2418 55 51 e8???????? 8d542420 52 }
            // n = 7, score = 100
            //   6a30                 | push                0x30
            //   8d4c2418             | lea                 ecx, dword ptr [esp + 0x18]
            //   55                   | push                ebp
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8d542420             | lea                 edx, dword ptr [esp + 0x20]
            //   52                   | push                edx

        $sequence_2 = { e8???????? 6a01 6804010000 68???????? e8???????? 68???????? }
            // n = 6, score = 100
            //   e8????????           |                     
            //   6a01                 | push                1
            //   6804010000           | push                0x104
            //   68????????           |                     
            //   e8????????           |                     
            //   68????????           |                     

        $sequence_3 = { 52 50 e8???????? 83c40c 85c0 7519 8d4c2414 }
            // n = 7, score = 100
            //   52                   | push                edx
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   85c0                 | test                eax, eax
            //   7519                 | jne                 0x1b
            //   8d4c2414             | lea                 ecx, dword ptr [esp + 0x14]

        $sequence_4 = { e8???????? 83c408 46 83c708 83fe08 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   46                   | inc                 esi
            //   83c708               | add                 edi, 8
            //   83fe08               | cmp                 esi, 8

        $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 = { 3d???????? 8a143a 88540c07 7cec b910000000 }
            // n = 5, score = 100
            //   3d????????           |                     
            //   8a143a               | mov                 dl, byte ptr [edx + edi]
            //   88540c07             | mov                 byte ptr [esp + ecx + 7], dl
            //   7cec                 | jl                  0xffffffee
            //   b910000000           | mov                 ecx, 0x10

        $sequence_7 = { 8b4e18 8b5614 83c1f8 8bc1 894e18 }
            // n = 5, score = 100
            //   8b4e18               | mov                 ecx, dword ptr [esi + 0x18]
            //   8b5614               | mov                 edx, dword ptr [esi + 0x14]
            //   83c1f8               | add                 ecx, -8
            //   8bc1                 | mov                 eax, ecx
            //   894e18               | mov                 dword ptr [esi + 0x18], ecx

        $sequence_8 = { 8a92785f4000 8813 7ca3 5b 8b442418 c6040600 }
            // n = 6, score = 100
            //   8a92785f4000         | mov                 dl, byte ptr [edx + 0x405f78]
            //   8813                 | mov                 byte ptr [ebx], dl
            //   7ca3                 | jl                  0xffffffa5
            //   5b                   | pop                 ebx
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   c6040600             | mov                 byte ptr [esi + eax], 0

        $sequence_9 = { 6a04 8d4c2424 6a01 51 e8???????? }
            // n = 5, score = 100
            //   6a04                 | push                4
            //   8d4c2424             | lea                 ecx, dword ptr [esp + 0x24]
            //   6a01                 | push                1
            //   51                   | push                ecx
            //   e8????????           |                     

    condition:
        7 of them and filesize < 65536
}