rule win_urlzone_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-08-17"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.urlzone"
        malpedia_rule_date = "20200817"
        malpedia_hash = "8c895fd01eccb47a6225bcb1a3ba53cbb98644c5"
        malpedia_version = "20200817"
        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 / approach 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 = { 80fc39 7f05 80ec30 eb22 }
            // n = 4, score = 2800
            //   80fc39               | cmp                 ah, 0x39
            //   7f05                 | jg                  7
            //   80ec30               | sub                 ah, 0x30
            //   eb22                 | jmp                 0x24

        $sequence_1 = { 80fc30 7c63 80fc39 7f05 }
            // n = 4, score = 2800
            //   80fc30               | cmp                 ah, 0x30
            //   7c63                 | jl                  0x65
            //   80fc39               | cmp                 ah, 0x39
            //   7f05                 | jg                  7

        $sequence_2 = { 80e930 80f909 7708 8d0480 8d0441 }
            // n = 5, score = 2800
            //   80e930               | sub                 cl, 0x30
            //   80f909               | cmp                 cl, 9
            //   7708                 | ja                  0xa
            //   8d0480               | lea                 eax, [eax + eax*4]
            //   8d0441               | lea                 eax, [ecx + eax*2]

        $sequence_3 = { 80c00a eb10 80f861 7c11 80f866 7f0c 80e861 }
            // n = 7, score = 2800
            //   80c00a               | add                 al, 0xa
            //   eb10                 | jmp                 0x12
            //   80f861               | cmp                 al, 0x61
            //   7c11                 | jl                  0x13
            //   80f866               | cmp                 al, 0x66
            //   7f0c                 | jg                  0xe
            //   80e861               | sub                 al, 0x61

        $sequence_4 = { 7f05 80ec30 eb22 80fc41 7c54 80fc46 }
            // n = 6, score = 2800
            //   7f05                 | jg                  7
            //   80ec30               | sub                 ah, 0x30
            //   eb22                 | jmp                 0x24
            //   80fc41               | cmp                 ah, 0x41
            //   7c54                 | jl                  0x56
            //   80fc46               | cmp                 ah, 0x46

        $sequence_5 = { 80f861 7c11 80f866 7f0c 80e861 80c00a c0e004 }
            // n = 7, score = 2800
            //   80f861               | cmp                 al, 0x61
            //   7c11                 | jl                  0x13
            //   80f866               | cmp                 al, 0x66
            //   7f0c                 | jg                  0xe
            //   80e861               | sub                 al, 0x61
            //   80c00a               | add                 al, 0xa
            //   c0e004               | shl                 al, 4

        $sequence_6 = { eb10 80f861 7c11 80f866 }
            // n = 4, score = 2800
            //   eb10                 | jmp                 0x12
            //   80f861               | cmp                 al, 0x61
            //   7c11                 | jl                  0x13
            //   80f866               | cmp                 al, 0x66

        $sequence_7 = { 7428 31c9 8a0a 42 80f92d 9c }
            // n = 6, score = 2800
            //   7428                 | je                  0x2a
            //   31c9                 | xor                 ecx, ecx
            //   8a0a                 | mov                 cl, byte ptr [edx]
            //   42                   | inc                 edx
            //   80f92d               | cmp                 cl, 0x2d
            //   9c                   | pushfd              

        $sequence_8 = { 80e861 80c00a c0e004 08e0 }
            // n = 4, score = 2800
            //   80e861               | sub                 al, 0x61
            //   80c00a               | add                 al, 0xa
            //   c0e004               | shl                 al, 4
            //   08e0                 | or                  al, ah

        $sequence_9 = { 80e841 80c00a eb10 80f861 7c11 }
            // n = 5, score = 2800
            //   80e841               | sub                 al, 0x41
            //   80c00a               | add                 al, 0xa
            //   eb10                 | jmp                 0x12
            //   80f861               | cmp                 al, 0x61
            //   7c11                 | jl                  0x13

    condition:
        7 of them and filesize < 704512
}