rule win_mount_locker_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        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 = "20220805"
        malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
        malpedia_version = "20220808"
        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 = { 5f 5e c3 488bc4 48895010 }
            // n = 5, score = 300
            //   5f                   | dec                 eax
            //   5e                   | mov                 eax, ebx
            //   c3                   | dec                 eax
            //   488bc4               | sub                 eax, edi
            //   48895010             | dec                 ecx

        $sequence_1 = { 4c89742438 4c89742430 41d1e9 c744242804010000 4889442420 ff15???????? 85c0 }
            // n = 7, score = 300
            //   4c89742438           | push                esi
            //   4c89742430           | dec                 eax
            //   41d1e9               | sub                 esp, 0xb0
            //   c744242804010000     | dec                 eax
            //   4889442420           | mov                 ebp, edx
            //   ff15????????         |                     
            //   85c0                 | dec                 eax

        $sequence_2 = { 85c0 7433 488364242800 4c8d442430 }
            // n = 4, score = 300
            //   85c0                 | mov                 dword ptr [esp + 0x50], ecx
            //   7433                 | jmp                 0x2db
            //   488364242800         | dec                 eax
            //   4c8d442430           | lea                 ecx, [eax + 0x10]

        $sequence_3 = { ff15???????? 488d45c0 4533c9 4889442448 488d95f0010000 488d442450 }
            // n = 6, score = 300
            //   ff15????????         |                     
            //   488d45c0             | lea                 edx, [0x2f6e]
            //   4533c9               | test                eax, eax
            //   4889442448           | jne                 0x359
            //   488d95f0010000       | dec                 eax
            //   488d442450           | lea                 ebp, [ebx + 0x20020]

        $sequence_4 = { 415e 5f 5e c3 488bc4 48895010 }
            // n = 6, score = 300
            //   415e                 | mov                 ecx, edi
            //   5f                   | mov                 dword ptr [esp + 0x7c], 2
            //   5e                   | dec                 eax
            //   c3                   | mov                 dword ptr [esp + 0x70], edi
            //   488bc4               | dec                 eax
            //   48895010             | mov                 edx, ebx

        $sequence_5 = { bb68000000 488d4c2450 448bc3 33d2 e8???????? }
            // n = 5, score = 300
            //   bb68000000           | dec                 eax
            //   488d4c2450           | lea                 esi, [eax + 0x10]
            //   448bc3               | dec                 esp
            //   33d2                 | mov                 eax, ecx
            //   e8????????           |                     

        $sequence_6 = { 56 57 4156 4883ec30 498be8 4d8bc8 }
            // n = 6, score = 300
            //   56                   | test                edx, edx
            //   57                   | je                  0xe8
            //   4156                 | dec                 eax
            //   4883ec30             | lea                 ecx, [0x5e90]
            //   498be8               | inc                 esp
            //   4d8bc8               | mov                 eax, dword ptr [ebx + 0x28]

        $sequence_7 = { 8bd8 85c0 743b 488b4d6f 488d4567 c744243000010000 }
            // n = 6, score = 300
            //   8bd8                 | jne                 0x35
            //   85c0                 | dec                 eax
            //   743b                 | mov                 ebp, ecx
            //   488b4d6f             | xor                 ebx, ebx
            //   488d4567             | jmp                 0x74
            //   c744243000010000     | dec                 eax

        $sequence_8 = { 85c0 7433 488364242800 4c8d442430 488364242000 }
            // n = 5, score = 300
            //   85c0                 | dec                 eax
            //   7433                 | lea                 edx, [0x634f]
            //   488364242800         | jmp                 0x277
            //   4c8d442430           | dec                 eax
            //   488364242000         | lea                 esi, [0xfffffd9e]

        $sequence_9 = { 7432 ff15???????? 85c0 7428 b9f5ffffff ff15???????? 488905???????? }
            // n = 7, score = 300
            //   7432                 | lea                 ecx, [esp + 0x100]
            //   ff15????????         |                     
            //   85c0                 | dec                 esp
            //   7428                 | lea                 edx, [0xfffff3b2]
            //   b9f5ffffff           | inc                 ebp
            //   ff15????????         |                     
            //   488905????????       |                     

    condition:
        7 of them and filesize < 225280
}