rule win_vapor_rage_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.vapor_rage."
        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.vapor_rage"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { e8???????? a1???????? 85c0 7f04 33c0 eb59 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   a1????????           |                     
            //   85c0                 | test                eax, eax
            //   7f04                 | jg                  6
            //   33c0                 | xor                 eax, eax
            //   eb59                 | jmp                 0x5b

        $sequence_1 = { 6a00 8d55ec 52 8b45d4 }
            // n = 4, score = 200
            //   6a00                 | push                0
            //   8d55ec               | lea                 edx, [ebp - 0x14]
            //   52                   | push                edx
            //   8b45d4               | mov                 eax, dword ptr [ebp - 0x2c]

        $sequence_2 = { 50 ff15???????? eb1e 8b4de4 51 }
            // n = 5, score = 200
            //   50                   | push                eax
            //   ff15????????         |                     
            //   eb1e                 | jmp                 0x20
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   51                   | push                ecx

        $sequence_3 = { c745fcfeffffff e8???????? 84db 0f8564ffffff e8???????? }
            // n = 5, score = 200
            //   c745fcfeffffff       | mov                 dword ptr [ebp - 4], 0xfffffffe
            //   e8????????           |                     
            //   84db                 | test                bl, bl
            //   0f8564ffffff         | jne                 0xffffff6a
            //   e8????????           |                     

        $sequence_4 = { 8d55ec 52 8b45d4 50 6a05 8b4de4 51 }
            // n = 7, score = 200
            //   8d55ec               | lea                 edx, [ebp - 0x14]
            //   52                   | push                edx
            //   8b45d4               | mov                 eax, dword ptr [ebp - 0x2c]
            //   50                   | push                eax
            //   6a05                 | push                5
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   51                   | push                ecx

        $sequence_5 = { 3b0d???????? f27502 f2c3 f2e94e030000 55 8bec 5d }
            // n = 7, score = 200
            //   3b0d????????         |                     
            //   f27502               | bnd jne             5
            //   f2c3                 | bnd ret             
            //   f2e94e030000         | bnd jmp             0x354
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   5d                   | pop                 ebp

        $sequence_6 = { 6a05 8b4de4 51 ff15???????? 8945a4 8b55d4 }
            // n = 6, score = 200
            //   6a05                 | push                5
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8945a4               | mov                 dword ptr [ebp - 0x5c], eax
            //   8b55d4               | mov                 edx, dword ptr [ebp - 0x2c]

        $sequence_7 = { c705????????02000000 32db 885de7 c745fcfeffffff e8???????? 84db 0f8564ffffff }
            // n = 7, score = 200
            //   c705????????02000000     |     
            //   32db                 | xor                 bl, bl
            //   885de7               | mov                 byte ptr [ebp - 0x19], bl
            //   c745fcfeffffff       | mov                 dword ptr [ebp - 4], 0xfffffffe
            //   e8????????           |                     
            //   84db                 | test                bl, bl
            //   0f8564ffffff         | jne                 0xffffff6a

        $sequence_8 = { 68???????? e8???????? a1???????? 85c0 7f04 33c0 eb59 }
            // n = 7, score = 200
            //   68????????           |                     
            //   e8????????           |                     
            //   a1????????           |                     
            //   85c0                 | test                eax, eax
            //   7f04                 | jg                  6
            //   33c0                 | xor                 eax, eax
            //   eb59                 | jmp                 0x5b

        $sequence_9 = { c745e400000000 6a00 6800008000 6a00 }
            // n = 4, score = 200
            //   c745e400000000       | mov                 dword ptr [ebp - 0x1c], 0
            //   6a00                 | push                0
            //   6800008000           | push                0x800000
            //   6a00                 | push                0

    condition:
        7 of them and filesize < 296960
}