rule win_urlzone_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.urlzone."
        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.urlzone"
        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 = { 7c54 80fc46 7f08 80ec41 80c40a eb10 80fc61 }
            // n = 7, score = 3000
            //   7c54                 | jl                  0x56
            //   80fc46               | cmp                 ah, 0x46
            //   7f08                 | jg                  0xa
            //   80ec41               | sub                 ah, 0x41
            //   80c40a               | add                 ah, 0xa
            //   eb10                 | jmp                 0x12
            //   80fc61               | cmp                 ah, 0x61

        $sequence_1 = { 80fc39 7f05 80ec30 eb22 }
            // n = 4, score = 3000
            //   80fc39               | cmp                 ah, 0x39
            //   7f05                 | jg                  7
            //   80ec30               | sub                 ah, 0x30
            //   eb22                 | jmp                 0x24

        $sequence_2 = { 7c11 80f866 7f0c 80e861 }
            // n = 4, score = 3000
            //   7c11                 | jl                  0x13
            //   80f866               | cmp                 al, 0x66
            //   7f0c                 | jg                  0xe
            //   80e861               | sub                 al, 0x61

        $sequence_3 = { eb10 80f861 7c11 80f866 7f0c }
            // n = 5, score = 3000
            //   eb10                 | jmp                 0x12
            //   80f861               | cmp                 al, 0x61
            //   7c11                 | jl                  0x13
            //   80f866               | cmp                 al, 0x66
            //   7f0c                 | jg                  0xe

        $sequence_4 = { 7f3d 80ec61 80c40a 80f830 7c32 }
            // n = 5, score = 3000
            //   7f3d                 | jg                  0x3f
            //   80ec61               | sub                 ah, 0x61
            //   80c40a               | add                 ah, 0xa
            //   80f830               | cmp                 al, 0x30
            //   7c32                 | jl                  0x34

        $sequence_5 = { fc 5f 5e c3 57 51 89c7 }
            // n = 7, score = 3000
            //   fc                   | cld                 
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   57                   | push                edi
            //   51                   | push                ecx
            //   89c7                 | mov                 edi, eax

        $sequence_6 = { 80ec30 eb22 80fc41 7c54 80fc46 7f08 80ec41 }
            // n = 7, score = 3000
            //   80ec30               | sub                 ah, 0x30
            //   eb22                 | jmp                 0x24
            //   80fc41               | cmp                 ah, 0x41
            //   7c54                 | jl                  0x56
            //   80fc46               | cmp                 ah, 0x46
            //   7f08                 | jg                  0xa
            //   80ec41               | sub                 ah, 0x41

        $sequence_7 = { 51 89c7 89d1 31c0 f3aa 59 }
            // n = 6, score = 3000
            //   51                   | push                ecx
            //   89c7                 | mov                 edi, eax
            //   89d1                 | mov                 ecx, edx
            //   31c0                 | xor                 eax, eax
            //   f3aa                 | rep stosb           byte ptr es:[edi], al
            //   59                   | pop                 ecx

        $sequence_8 = { 7c23 80f846 7f08 80e841 80c00a }
            // n = 5, score = 3000
            //   7c23                 | jl                  0x25
            //   80f846               | cmp                 al, 0x46
            //   7f08                 | jg                  0xa
            //   80e841               | sub                 al, 0x41
            //   80c00a               | add                 al, 0xa

        $sequence_9 = { 92 31c0 85d2 7428 31c9 }
            // n = 5, score = 3000
            //   92                   | xchg                eax, edx
            //   31c0                 | xor                 eax, eax
            //   85d2                 | test                edx, edx
            //   7428                 | je                  0x2a
            //   31c9                 | xor                 ecx, ecx

    condition:
        7 of them and filesize < 704512
}