rule win_divergent_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.divergent."
        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.divergent"
        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 = { e8???????? 59 83f806 7505 8b4608 eb03 }
            // n = 6, score = 300
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   83f806               | cmp                 eax, 6
            //   7505                 | jne                 7
            //   8b4608               | mov                 eax, dword ptr [esi + 8]
            //   eb03                 | jmp                 5

        $sequence_1 = { c745f865763169 c645fc00 c60000 40 49 75f9 }
            // n = 6, score = 300
            //   c745f865763169       | mov                 dword ptr [ebp - 8], 0x69317665
            //   c645fc00             | mov                 byte ptr [ebp - 4], 0
            //   c60000               | mov                 byte ptr [eax], 0
            //   40                   | inc                 eax
            //   49                   | dec                 ecx
            //   75f9                 | jne                 0xfffffffb

        $sequence_2 = { 743e 6a3c 5a 8bca }
            // n = 4, score = 300
            //   743e                 | je                  0x40
            //   6a3c                 | push                0x3c
            //   5a                   | pop                 edx
            //   8bca                 | mov                 ecx, edx

        $sequence_3 = { 40 50 6800000010 ff7508 ff15???????? 8bf8 }
            // n = 6, score = 300
            //   40                   | inc                 eax
            //   50                   | push                eax
            //   6800000010           | push                0x10000000
            //   ff7508               | push                dword ptr [ebp + 8]
            //   ff15????????         |                     
            //   8bf8                 | mov                 edi, eax

        $sequence_4 = { 832700 57 ff760c ff7608 }
            // n = 4, score = 300
            //   832700               | and                 dword ptr [edi], 0
            //   57                   | push                edi
            //   ff760c               | push                dword ptr [esi + 0xc]
            //   ff7608               | push                dword ptr [esi + 8]

        $sequence_5 = { 53 56 8b7508 8b4604 85c0 7509 394608 }
            // n = 7, score = 300
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   8b4604               | mov                 eax, dword ptr [esi + 4]
            //   85c0                 | test                eax, eax
            //   7509                 | jne                 0xb
            //   394608               | cmp                 dword ptr [esi + 8], eax

        $sequence_6 = { 50 e8???????? 59 6a03 56 e8???????? 59 }
            // n = 7, score = 300
            //   50                   | push                eax
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   6a03                 | push                3
            //   56                   | push                esi
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_7 = { ff15???????? 6800100000 e8???????? 8bf0 8b45fc 59 }
            // n = 6, score = 300
            //   ff15????????         |                     
            //   6800100000           | push                0x1000
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   59                   | pop                 ecx

        $sequence_8 = { 56 e8???????? 0fb645e2 660f6ec0 f30fe6c0 83c408 }
            // n = 6, score = 300
            //   56                   | push                esi
            //   e8????????           |                     
            //   0fb645e2             | movzx               eax, byte ptr [ebp - 0x1e]
            //   660f6ec0             | movd                xmm0, eax
            //   f30fe6c0             | cvtdq2pd            xmm0, xmm0
            //   83c408               | add                 esp, 8

        $sequence_9 = { 0f84b8000000 57 50 e8???????? 8bf8 59 85ff }
            // n = 7, score = 300
            //   0f84b8000000         | je                  0xbe
            //   57                   | push                edi
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   59                   | pop                 ecx
            //   85ff                 | test                edi, edi

    condition:
        7 of them and filesize < 212992
}