rule win_mount_locker_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.mount_locker."
        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.mount_locker"
        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 = { 488bc8 ff15???????? 85c0 7456 }
            // n = 4, score = 300
            //   488bc8               | dec                 eax
            //   ff15????????         |                     
            //   85c0                 | lea                 edx, dword ptr [0x6657]
            //   7456                 | mov                 ecx, 3

        $sequence_1 = { 488d45c0 4533c9 4889442448 488d95f0010000 488d442450 4533c0 }
            // n = 6, score = 300
            //   488d45c0             | lea                 edx, dword ptr [0x6405]
            //   4533c9               | inc                 ecx
            //   4889442448           | mov                 ecx, edi
            //   488d95f0010000       | dec                 eax
            //   488d442450           | lea                 edx, dword ptr [0x368a]
            //   4533c0               | inc                 esp

        $sequence_2 = { 498be3 5d c3 bb68000000 488d4c2450 448bc3 33d2 }
            // n = 7, score = 300
            //   498be3               | dec                 eax
            //   5d                   | lea                 eax, dword ptr [ebp - 0x40]
            //   c3                   | dec                 esp
            //   bb68000000           | mov                 dword ptr [esp + 0x38], esi
            //   488d4c2450           | dec                 esp
            //   448bc3               | lea                 eax, dword ptr [0x5f3d]
            //   33d2                 | dec                 eax

        $sequence_3 = { 4889442420 ff15???????? 488b4d6f 8bd8 ff15???????? 488b4d77 33d2 }
            // n = 7, score = 300
            //   4889442420           | mov                 edx, 0xc0000000
            //   ff15????????         |                     
            //   488b4d6f             | mov                 dword ptr [esp + 0x20], 2
            //   8bd8                 | dec                 eax
            //   ff15????????         |                     
            //   488b4d77             | mov                 ecx, ebx
            //   33d2                 | dec                 eax

        $sequence_4 = { 751e 488b0d???????? 488d542420 ff15???????? 8b442424 8905???????? eb0d }
            // n = 7, score = 300
            //   751e                 | dec                 eax
            //   488b0d????????       |                     
            //   488d542420           | sub                 esp, 0x130
            //   ff15????????         |                     
            //   8b442424             | dec                 eax
            //   8905????????         |                     
            //   eb0d                 | mov                 esi, ecx

        $sequence_5 = { 4533c9 488b4c2458 33d2 c744243001000000 c744243c02000000 }
            // n = 5, score = 300
            //   4533c9               | mov                 ebx, eax
            //   488b4c2458           | xorps               xmm0, xmm0
            //   33d2                 | dec                 eax
            //   c744243001000000     | mov                 eax, 0x1a9fbe77
            //   c744243c02000000     | das                 

        $sequence_6 = { 33d2 4889442420 ff15???????? 488b4d6f 8bd8 }
            // n = 5, score = 300
            //   33d2                 | lea                 ecx, dword ptr [esp + 0x50]
            //   4889442420           | inc                 esp
            //   ff15????????         |                     
            //   488b4d6f             | mov                 eax, ebx
            //   8bd8                 | xor                 edx, edx

        $sequence_7 = { 488d542420 ff15???????? 8b442424 8905???????? eb0d }
            // n = 5, score = 300
            //   488d542420           | jne                 0x11ed
            //   ff15????????         |                     
            //   8b442424             | dec                 eax
            //   8905????????         |                     
            //   eb0d                 | test                edi, edi

        $sequence_8 = { 33d2 4889442420 ff15???????? 488b4d6f 8bd8 ff15???????? 488b4d77 }
            // n = 7, score = 300
            //   33d2                 | inc                 ecx
            //   4889442420           | mov                 eax, dword ptr [esp + 0x18]
            //   ff15????????         |                     
            //   488b4d6f             | dec                 eax
            //   8bd8                 | lea                 esi, dword ptr [ebx + 0x238]
            //   ff15????????         |                     
            //   488b4d77             | dec                 eax

        $sequence_9 = { 743b 488b4d6f 488d4567 c744243000010000 4533c9 }
            // n = 5, score = 300
            //   743b                 | dec                 eax
            //   488b4d6f             | mov                 dword ptr [ebx], eax
            //   488d4567             | dec                 eax
            //   c744243000010000     | test                edx, edx
            //   4533c9               | je                  0x14ab

    condition:
        7 of them and filesize < 225280
}