rule win_new_ct_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.new_ct."
        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.new_ct"
        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 = { 8d95b0faffff 52 68???????? 8d857cf8ffff 50 }
            // n = 5, score = 200
            //   8d95b0faffff         | lea                 edx, [ebp - 0x550]
            //   52                   | push                edx
            //   68????????           |                     
            //   8d857cf8ffff         | lea                 eax, [ebp - 0x784]
            //   50                   | push                eax

        $sequence_1 = { c1e902 f3a5 8bca 83e103 f3a4 039dc8fdffff 899de0feffff }
            // n = 7, score = 200
            //   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]
            //   039dc8fdffff         | add                 ebx, dword ptr [ebp - 0x238]
            //   899de0feffff         | mov                 dword ptr [ebp - 0x120], ebx

        $sequence_2 = { 7905 4a 83cafc 42 40 }
            // n = 5, score = 200
            //   7905                 | jns                 7
            //   4a                   | dec                 edx
            //   83cafc               | or                  edx, 0xfffffffc
            //   42                   | inc                 edx
            //   40                   | inc                 eax

        $sequence_3 = { 8d7c2459 8b9c24cc9f0100 f3ab 66ab aa }
            // n = 5, score = 200
            //   8d7c2459             | lea                 edi, [esp + 0x59]
            //   8b9c24cc9f0100       | mov                 ebx, dword ptr [esp + 0x19fcc]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   66ab                 | stosw               word ptr es:[edi], ax
            //   aa                   | stosb               byte ptr es:[edi], al

        $sequence_4 = { 81ec30060000 53 56 57 8965e8 c685e4fbffff00 b9ff000000 }
            // n = 7, score = 200
            //   81ec30060000         | sub                 esp, 0x630
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi
            //   8965e8               | mov                 dword ptr [ebp - 0x18], esp
            //   c685e4fbffff00       | mov                 byte ptr [ebp - 0x41c], 0
            //   b9ff000000           | mov                 ecx, 0xff

        $sequence_5 = { 8bf8 83c408 85ff 0f84ab000000 6a00 }
            // n = 5, score = 200
            //   8bf8                 | mov                 edi, eax
            //   83c408               | add                 esp, 8
            //   85ff                 | test                edi, edi
            //   0f84ab000000         | je                  0xb1
            //   6a00                 | push                0

        $sequence_6 = { 8d8c2460020000 50 51 53 }
            // n = 4, score = 200
            //   8d8c2460020000       | lea                 ecx, [esp + 0x260]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   53                   | push                ebx

        $sequence_7 = { eb54 8bbc247c0f0000 83c9ff 33c0 f2ae }
            // n = 5, score = 200
            //   eb54                 | jmp                 0x56
            //   8bbc247c0f0000       | mov                 edi, dword ptr [esp + 0xf7c]
            //   83c9ff               | or                  ecx, 0xffffffff
            //   33c0                 | xor                 eax, eax
            //   f2ae                 | repne scasb         al, byte ptr es:[edi]

        $sequence_8 = { 33ff 897c2414 8b8680030000 8d542414 52 03c7 }
            // n = 6, score = 200
            //   33ff                 | xor                 edi, edi
            //   897c2414             | mov                 dword ptr [esp + 0x14], edi
            //   8b8680030000         | mov                 eax, dword ptr [esi + 0x380]
            //   8d542414             | lea                 edx, [esp + 0x14]
            //   52                   | push                edx
            //   03c7                 | add                 eax, edi

        $sequence_9 = { e8???????? 85c0 7e1a 6a40 bb01000000 68???????? 68???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7e1a                 | jle                 0x1c
            //   6a40                 | push                0x40
            //   bb01000000           | mov                 ebx, 1
            //   68????????           |                     
            //   68????????           |                     

    condition:
        7 of them and filesize < 122880
}