rule win_mount_locker_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 498be8 4d8bc8 4c8bc2 4c8bf2 8bf1 }
            // n = 5, score = 500
            //   498be8               | dec                 eax
            //   4d8bc8               | sub                 esp, 0x28
            //   4c8bc2               | je                  0x530
            //   4c8bf2               | dec                 eax
            //   8bf1                 | lea                 ecx, [0xa40]

        $sequence_1 = { 488b4c2458 33d2 c744243001000000 c744243c02000000 }
            // n = 4, score = 500
            //   488b4c2458           | dec                 eax
            //   33d2                 | and                 dword ptr [esp + 0x20], 0
            //   c744243001000000     | test                eax, eax
            //   c744243c02000000     | je                  0x216

        $sequence_2 = { 488364242000 4533c9 488b4c2458 33d2 c744243001000000 c744243c02000000 }
            // n = 6, score = 500
            //   488364242000         | mov                 ebx, 1
            //   4533c9               | dec                 esp
            //   488b4c2458           | lea                 eax, [esp + 0x30]
            //   33d2                 | mov                 edx, ebx
            //   c744243001000000     | or                  ecx, 0xfffffffc
            //   c744243c02000000     | add                 ecx, ebx

        $sequence_3 = { 488bcb 488b15???????? e8???????? 85c0 }
            // n = 4, score = 500
            //   488bcb               | dec                 eax
            //   488b15????????       |                     
            //   e8????????           |                     
            //   85c0                 | lea                 edx, [0x14209]

        $sequence_4 = { 488364242800 4c8d442430 488364242000 4533c9 488b4c2458 33d2 c744243001000000 }
            // n = 7, score = 500
            //   488364242800         | lea                 ecx, [esp + 0x20]
            //   4c8d442430           | dec                 eax
            //   488364242000         | mov                 edi, eax
            //   4533c9               | dec                 eax
            //   488b4c2458           | test                eax, eax
            //   33d2                 | je                  0x18bd
            //   c744243001000000     | dec                 eax

        $sequence_5 = { f30f5905???????? 0f5ad0 66490f7ed0 e8???????? }
            // n = 4, score = 500
            //   f30f5905????????     |                     
            //   0f5ad0               | jne                 0x7e8
            //   66490f7ed0           | dec                 eax
            //   e8????????           |                     

        $sequence_6 = { 4c8bc2 4c8bf2 8bf1 33d2 }
            // n = 4, score = 500
            //   4c8bc2               | xor                 edx, edx
            //   4c8bf2               | dec                 eax
            //   8bf1                 | lea                 ecx, [0xd512]
            //   33d2                 | dec                 eax

        $sequence_7 = { 4d8bc8 4c8bc2 4c8bf2 8bf1 33d2 33c9 }
            // n = 6, score = 500
            //   4d8bc8               | push                esi
            //   4c8bc2               | inc                 ecx
            //   4c8bf2               | push                edi
            //   8bf1                 | dec                 eax
            //   33d2                 | sub                 esp, 0x20
            //   33c9                 | dec                 ebp

        $sequence_8 = { 4533c9 488b4c2458 33d2 c744243001000000 }
            // n = 4, score = 500
            //   4533c9               | lea                 edx, [edi + 2]
            //   488b4c2458           | inc                 esp
            //   33d2                 | lea                 ecx, [eax*2 + 0x18]
            //   c744243001000000     | mov                 esi, eax

        $sequence_9 = { 488b0b 41b902000000 4533c0 33d2 }
            // n = 4, score = 500
            //   488b0b               | inc                 esp
            //   41b902000000         | mov                 esi, ecx
            //   4533c0               | dec                 eax
            //   33d2                 | lea                 edx, [esp + 0x20]

    condition:
        7 of them and filesize < 368640
}