rule win_plaintee_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 8d853c010000 50 8b8538010000 6a5a 52 }
            // n = 6, 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

        $sequence_1 = { 50 ff15???????? 83f85a 721a 8a16 }
            // n = 5, score = 300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83f85a               | cmp                 eax, 0x5a
            //   721a                 | jb                  0x1c
            //   8a16                 | mov                 dl, byte ptr [esi]

        $sequence_2 = { 5b 8b542418 8b442414 52 50 6a00 56 }
            // n = 7, score = 300
            //   5b                   | pop                 ebx
            //   8b542418             | mov                 edx, dword ptr [esp + 0x18]
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   52                   | push                edx
            //   50                   | push                eax
            //   6a00                 | push                0
            //   56                   | push                esi

        $sequence_3 = { 881c31 41 3bc8 7cf3 5b }
            // n = 5, score = 300
            //   881c31               | mov                 byte ptr [ecx + esi], bl
            //   41                   | inc                 ecx
            //   3bc8                 | cmp                 ecx, eax
            //   7cf3                 | jl                  0xfffffff5
            //   5b                   | pop                 ebx

        $sequence_4 = { 51 52 ffd0 8b4c2400 33c0 83f905 0f94c0 }
            // n = 7, score = 300
            //   51                   | push                ecx
            //   52                   | push                edx
            //   ffd0                 | call                eax
            //   8b4c2400             | mov                 ecx, dword ptr [esp]
            //   33c0                 | xor                 eax, eax
            //   83f905               | cmp                 ecx, 5
            //   0f94c0               | sete                al

        $sequence_5 = { 83c408 ff15???????? 99 b932000000 8b742410 }
            // n = 5, score = 300
            //   83c408               | add                 esp, 8
            //   ff15????????         |                     
            //   99                   | cdq                 
            //   b932000000           | mov                 ecx, 0x32
            //   8b742410             | mov                 esi, dword ptr [esp + 0x10]

        $sequence_6 = { 8b54240c 56 8b74240c 50 8b44240c 51 6a00 }
            // n = 7, score = 300
            //   8b54240c             | mov                 edx, dword ptr [esp + 0xc]
            //   56                   | push                esi
            //   8b74240c             | mov                 esi, dword ptr [esp + 0xc]
            //   50                   | push                eax
            //   8b44240c             | mov                 eax, dword ptr [esp + 0xc]
            //   51                   | push                ecx
            //   6a00                 | push                0

        $sequence_7 = { 8bc8 83e103 8d853c010000 f3a4 8b8d4c010000 }
            // n = 5, score = 300
            //   8bc8                 | mov                 ecx, eax
            //   83e103               | and                 ecx, 3
            //   8d853c010000         | lea                 eax, [ebp + 0x13c]
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8b8d4c010000         | mov                 ecx, dword ptr [ebp + 0x14c]

        $sequence_8 = { 83c438 68???????? ff15???????? 8b400c 8b08 8b11 52 }
            // n = 7, score = 300
            //   83c438               | add                 esp, 0x38
            //   68????????           |                     
            //   ff15????????         |                     
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   52                   | push                edx

        $sequence_9 = { 84c0 7416 85f6 74c6 }
            // n = 4, score = 300
            //   84c0                 | test                al, al
            //   7416                 | je                  0x18
            //   85f6                 | test                esi, esi
            //   74c6                 | je                  0xffffffc8

    condition:
        7 of them and filesize < 73728
}