rule win_turian_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.turian."
        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.turian"
        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 = { a1???????? 8902 668b0d???????? 66894a04 8b8c2490000000 e8???????? 83f810 }
            // n = 7, score = 400
            //   a1????????           |                     
            //   8902                 | mov                 dword ptr [edx], eax
            //   668b0d????????       |                     
            //   66894a04             | mov                 word ptr [edx + 4], cx
            //   8b8c2490000000       | mov                 ecx, dword ptr [esp + 0x90]
            //   e8????????           |                     
            //   83f810               | cmp                 eax, 0x10

        $sequence_1 = { 881d???????? 891d???????? 66a3???????? 5b c3 6a3f 50 }
            // n = 7, score = 400
            //   881d????????         |                     
            //   891d????????         |                     
            //   66a3????????         |                     
            //   5b                   | pop                 ebx
            //   c3                   | ret                 
            //   6a3f                 | push                0x3f
            //   50                   | push                eax

        $sequence_2 = { 52 ffd5 85c0 7423 a1???????? 43 }
            // n = 6, score = 400
            //   52                   | push                edx
            //   ffd5                 | call                ebp
            //   85c0                 | test                eax, eax
            //   7423                 | je                  0x25
            //   a1????????           |                     
            //   43                   | inc                 ebx

        $sequence_3 = { c3 8d542410 6a10 52 8bce }
            // n = 5, score = 400
            //   c3                   | ret                 
            //   8d542410             | lea                 edx, [esp + 0x10]
            //   6a10                 | push                0x10
            //   52                   | push                edx
            //   8bce                 | mov                 ecx, esi

        $sequence_4 = { 51 ffd7 8b542414 52 ffd7 8b3d???????? }
            // n = 6, score = 400
            //   51                   | push                ecx
            //   ffd7                 | call                edi
            //   8b542414             | mov                 edx, dword ptr [esp + 0x14]
            //   52                   | push                edx
            //   ffd7                 | call                edi
            //   8b3d????????         |                     

        $sequence_5 = { 85c0 0f840affffff 5f 5e 5d 33c0 }
            // n = 6, score = 400
            //   85c0                 | test                eax, eax
            //   0f840affffff         | je                  0xffffff10
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp
            //   33c0                 | xor                 eax, eax

        $sequence_6 = { e8???????? 83f810 7e7c 6a00 }
            // n = 4, score = 400
            //   e8????????           |                     
            //   83f810               | cmp                 eax, 0x10
            //   7e7c                 | jle                 0x7e
            //   6a00                 | push                0

        $sequence_7 = { c1e902 f3a5 8bc8 33c0 83e103 8d542456 f3a4 }
            // n = 7, score = 400
            //   c1e902               | shr                 ecx, 2
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   8bc8                 | mov                 ecx, eax
            //   33c0                 | xor                 eax, eax
            //   83e103               | and                 ecx, 3
            //   8d542456             | lea                 edx, [esp + 0x56]
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]

        $sequence_8 = { 7353 a1???????? 85c0 754a 6809380000 56 }
            // n = 6, score = 400
            //   7353                 | jae                 0x55
            //   a1????????           |                     
            //   85c0                 | test                eax, eax
            //   754a                 | jne                 0x4c
            //   6809380000           | push                0x3809
            //   56                   | push                esi

        $sequence_9 = { 81c49c000000 c3 c60000 40 50 ff15???????? }
            // n = 6, score = 400
            //   81c49c000000         | add                 esp, 0x9c
            //   c3                   | ret                 
            //   c60000               | mov                 byte ptr [eax], 0
            //   40                   | inc                 eax
            //   50                   | push                eax
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 645120
}