rule win_plaintee_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.plaintee."
        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.plaintee"
        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 = { 50 ff15???????? 83c438 68???????? ff15???????? 8b400c 8b08 }
            // n = 7, score = 300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83c438               | add                 esp, 0x38
            //   68????????           |                     
            //   ff15????????         |                     
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   8b08                 | mov                 ecx, dword ptr [eax]

        $sequence_1 = { c1e902 f3a5 8bc8 83e103 8d853c010000 f3a4 }
            // n = 6, score = 300
            //   c1e902               | shr                 ecx, 2
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8bc8                 | mov                 ecx, eax
            //   83e103               | and                 ecx, 3
            //   8d853c010000         | lea                 eax, [ebp + 0x13c]
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]

        $sequence_2 = { 85c0 740a b001 5e }
            // n = 4, score = 300
            //   85c0                 | test                eax, eax
            //   740a                 | je                  0xc
            //   b001                 | mov                 al, 1
            //   5e                   | pop                 esi

        $sequence_3 = { 6a00 8d542404 51 52 ffd0 8b4c2400 33c0 }
            // n = 7, score = 300
            //   6a00                 | push                0
            //   8d542404             | lea                 edx, [esp + 4]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   ffd0                 | call                eax
            //   8b4c2400             | mov                 ecx, dword ptr [esp]
            //   33c0                 | xor                 eax, eax

        $sequence_4 = { 50 8d853c010000 50 8b8538010000 6a5a 52 50 }
            // n = 7, score = 300
            //   50                   | push                eax
            //   8d853c010000         | lea                 eax, [ebp + 0x13c]
            //   50                   | push                eax
            //   8b8538010000         | mov                 eax, dword ptr [ebp + 0x138]
            //   6a5a                 | push                0x5a
            //   52                   | push                edx
            //   50                   | push                eax

        $sequence_5 = { 41 3bc8 7cf3 5b }
            // n = 4, score = 300
            //   41                   | inc                 ecx
            //   3bc8                 | cmp                 ecx, eax
            //   7cf3                 | jl                  0xfffffff5
            //   5b                   | pop                 ebx

        $sequence_6 = { 68???????? c744240400000000 c744240800000000 ff15???????? 85c0 741a 68???????? }
            // n = 7, score = 300
            //   68????????           |                     
            //   c744240400000000     | mov                 dword ptr [esp + 4], 0
            //   c744240800000000     | mov                 dword ptr [esp + 8], 0
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   741a                 | je                  0x1c
            //   68????????           |                     

        $sequence_7 = { e9???????? 8bcd e8???????? b916000000 33c0 }
            // n = 5, score = 300
            //   e9????????           |                     
            //   8bcd                 | mov                 ecx, ebp
            //   e8????????           |                     
            //   b916000000           | mov                 ecx, 0x16
            //   33c0                 | xor                 eax, eax

        $sequence_8 = { f3a4 8b8d4c010000 83c25a 51 50 }
            // n = 5, score = 300
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8b8d4c010000         | mov                 ecx, dword ptr [ebp + 0x14c]
            //   83c25a               | add                 edx, 0x5a
            //   51                   | push                ecx
            //   50                   | push                eax

        $sequence_9 = { 8d542404 51 52 ffd0 8b4c2400 }
            // n = 5, score = 300
            //   8d542404             | lea                 edx, [esp + 4]
            //   51                   | push                ecx
            //   52                   | push                edx
            //   ffd0                 | call                eax
            //   8b4c2400             | mov                 ecx, dword ptr [esp]

    condition:
        7 of them and filesize < 73728
}