rule win_bubblewrap_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.bubblewrap."
        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.bubblewrap"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 750b c1ed0a 892d???????? eb0c c1ed0a }
            // n = 5, score = 100
            //   750b                 | jne                 0xd
            //   c1ed0a               | shr                 ebp, 0xa
            //   892d????????         |                     
            //   eb0c                 | jmp                 0xe
            //   c1ed0a               | shr                 ebp, 0xa

        $sequence_1 = { b988130000 f7f1 81c2e8030000 52 ffd5 43 }
            // n = 6, score = 100
            //   b988130000           | mov                 ecx, 0x1388
            //   f7f1                 | div                 ecx
            //   81c2e8030000         | add                 edx, 0x3e8
            //   52                   | push                edx
            //   ffd5                 | call                ebp
            //   43                   | inc                 ebx

        $sequence_2 = { 8b9384010000 83c404 8d441019 50 e8???????? 8b4c2418 83c408 }
            // n = 7, score = 100
            //   8b9384010000         | mov                 edx, dword ptr [ebx + 0x184]
            //   83c404               | add                 esp, 4
            //   8d441019             | lea                 eax, [eax + edx + 0x19]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b4c2418             | mov                 ecx, dword ptr [esp + 0x18]
            //   83c408               | add                 esp, 8

        $sequence_3 = { 8d4c2420 50 51 ff15???????? 8b542434 8b442432 }
            // n = 6, score = 100
            //   8d4c2420             | lea                 ecx, [esp + 0x20]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8b542434             | mov                 edx, dword ptr [esp + 0x34]
            //   8b442432             | mov                 eax, dword ptr [esp + 0x32]

        $sequence_4 = { b099 884c2441 b910000000 8d74240c 8d7c240c c644240c2c c644240e15 }
            // n = 7, score = 100
            //   b099                 | mov                 al, 0x99
            //   884c2441             | mov                 byte ptr [esp + 0x41], cl
            //   b910000000           | mov                 ecx, 0x10
            //   8d74240c             | lea                 esi, [esp + 0xc]
            //   8d7c240c             | lea                 edi, [esp + 0xc]
            //   c644240c2c           | mov                 byte ptr [esp + 0xc], 0x2c
            //   c644240e15           | mov                 byte ptr [esp + 0xe], 0x15

        $sequence_5 = { 56 57 a1???????? 83c005 8945fc 6a00 }
            // n = 6, score = 100
            //   56                   | push                esi
            //   57                   | push                edi
            //   a1????????           |                     
            //   83c005               | add                 eax, 5
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   6a00                 | push                0

        $sequence_6 = { 8d542464 68???????? 52 ffd7 85c0 }
            // n = 5, score = 100
            //   8d542464             | lea                 edx, [esp + 0x64]
            //   68????????           |                     
            //   52                   | push                edx
            //   ffd7                 | call                edi
            //   85c0                 | test                eax, eax

        $sequence_7 = { c6442413b9 c644241546 c6442416d2 c644241755 c6442418c4 c644241979 c644241b8d }
            // n = 7, score = 100
            //   c6442413b9           | mov                 byte ptr [esp + 0x13], 0xb9
            //   c644241546           | mov                 byte ptr [esp + 0x15], 0x46
            //   c6442416d2           | mov                 byte ptr [esp + 0x16], 0xd2
            //   c644241755           | mov                 byte ptr [esp + 0x17], 0x55
            //   c6442418c4           | mov                 byte ptr [esp + 0x18], 0xc4
            //   c644241979           | mov                 byte ptr [esp + 0x19], 0x79
            //   c644241b8d           | mov                 byte ptr [esp + 0x1b], 0x8d

        $sequence_8 = { ffd6 68???????? ffd6 8b5c241c }
            // n = 4, score = 100
            //   ffd6                 | call                esi
            //   68????????           |                     
            //   ffd6                 | call                esi
            //   8b5c241c             | mov                 ebx, dword ptr [esp + 0x1c]

        $sequence_9 = { c1e902 f3a5 8bca 83e103 f3a4 e8???????? 8b0d???????? }
            // n = 7, score = 100
            //   c1e902               | shr                 ecx, 2
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8bca                 | mov                 ecx, edx
            //   83e103               | and                 ecx, 3
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   e8????????           |                     
            //   8b0d????????         |                     

    condition:
        7 of them and filesize < 57136
}