rule win_hi_zor_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.hi_zor_rat."
        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.hi_zor_rat"
        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 = { 7cf1 33c0 66837445e402 40 83f80b 7cf4 33c0 }
            // n = 7, score = 200
            //   7cf1                 | jl                  0xfffffff3
            //   33c0                 | xor                 eax, eax
            //   66837445e402         | xor                 word ptr [ebp + eax*2 - 0x1c], 2
            //   40                   | inc                 eax
            //   83f80b               | cmp                 eax, 0xb
            //   7cf4                 | jl                  0xfffffff6
            //   33c0                 | xor                 eax, eax

        $sequence_1 = { f7d3 23581c 0bde 03df 8b7010 8db433af0f7cff }
            // n = 6, score = 200
            //   f7d3                 | not                 ebx
            //   23581c               | and                 ebx, dword ptr [eax + 0x1c]
            //   0bde                 | or                  ebx, esi
            //   03df                 | add                 ebx, edi
            //   8b7010               | mov                 esi, dword ptr [eax + 0x10]
            //   8db433af0f7cff       | lea                 esi, [ebx + esi - 0x83f051]

        $sequence_2 = { 6804010000 8d8de4fdffff 56 51 }
            // n = 4, score = 200
            //   6804010000           | push                0x104
            //   8d8de4fdffff         | lea                 ecx, [ebp - 0x21c]
            //   56                   | push                esi
            //   51                   | push                ecx

        $sequence_3 = { 85c0 0f8574ffffff 47 85ff }
            // n = 4, score = 200
            //   85c0                 | test                eax, eax
            //   0f8574ffffff         | jne                 0xffffff7a
            //   47                   | inc                 edi
            //   85ff                 | test                edi, edi

        $sequence_4 = { 898572ffffff 898576ffffff 89857affffff 6689857effffff c7458c10000000 ff15???????? e8???????? }
            // n = 7, score = 200
            //   898572ffffff         | mov                 dword ptr [ebp - 0x8e], eax
            //   898576ffffff         | mov                 dword ptr [ebp - 0x8a], eax
            //   89857affffff         | mov                 dword ptr [ebp - 0x86], eax
            //   6689857effffff       | mov                 word ptr [ebp - 0x82], ax
            //   c7458c10000000       | mov                 dword ptr [ebp - 0x74], 0x10
            //   ff15????????         |                     
            //   e8????????           |                     

        $sequence_5 = { 51 56 50 894510 e8???????? 8b5510 }
            // n = 6, score = 200
            //   51                   | push                ecx
            //   56                   | push                esi
            //   50                   | push                eax
            //   894510               | mov                 dword ptr [ebp + 0x10], eax
            //   e8????????           |                     
            //   8b5510               | mov                 edx, dword ptr [ebp + 0x10]

        $sequence_6 = { 6a40 6a00 57 e8???????? 83c40c 6a00 8d4dfc }
            // n = 7, score = 200
            //   6a40                 | push                0x40
            //   6a00                 | push                0
            //   57                   | push                edi
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6a00                 | push                0
            //   8d4dfc               | lea                 ecx, [ebp - 4]

        $sequence_7 = { 6a00 6a05 51 ff15???????? 56 ff15???????? }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   6a05                 | push                5
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   56                   | push                esi
            //   ff15????????         |                     

        $sequence_8 = { 884612 33c0 8be5 5d }
            // n = 4, score = 200
            //   884612               | mov                 byte ptr [esi + 0x12], al
            //   33c0                 | xor                 eax, eax
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp

        $sequence_9 = { 83ec24 85c0 742d 68???????? 68???????? ff15???????? }
            // n = 6, score = 200
            //   83ec24               | sub                 esp, 0x24
            //   85c0                 | test                eax, eax
            //   742d                 | je                  0x2f
            //   68????????           |                     
            //   68????????           |                     
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 73728
}