rule win_hi_zor_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        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 = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { f7d7 237810 23de 8b7014 0bfb 03785c 895018 }
            // n = 7, score = 200
            //   f7d7                 | not                 edi
            //   237810               | and                 edi, dword ptr [eax + 0x10]
            //   23de                 | and                 ebx, esi
            //   8b7014               | mov                 esi, dword ptr [eax + 0x14]
            //   0bfb                 | or                  edi, ebx
            //   03785c               | add                 edi, dword ptr [eax + 0x5c]
            //   895018               | mov                 dword ptr [eax + 0x18], edx

        $sequence_1 = { 8945fc ff15???????? 33c9 83c404 3bc1 740d 8908 }
            // n = 7, score = 200
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   ff15????????         |                     
            //   33c9                 | xor                 ecx, ecx
            //   83c404               | add                 esp, 4
            //   3bc1                 | cmp                 eax, ecx
            //   740d                 | je                  0xf
            //   8908                 | mov                 dword ptr [eax], ecx

        $sequence_2 = { 56 53 e8???????? 83c414 33c0 85ff }
            // n = 6, score = 200
            //   56                   | push                esi
            //   53                   | push                ebx
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   33c0                 | xor                 eax, eax
            //   85ff                 | test                edi, edi

        $sequence_3 = { 2500ff0000 c1ee08 c1e310 0bd8 8bc1 250000ff00 c1e308 }
            // n = 7, score = 200
            //   2500ff0000           | and                 eax, 0xff00
            //   c1ee08               | shr                 esi, 8
            //   c1e310               | shl                 ebx, 0x10
            //   0bd8                 | or                  ebx, eax
            //   8bc1                 | mov                 eax, ecx
            //   250000ff00           | and                 eax, 0xff0000
            //   c1e308               | shl                 ebx, 8

        $sequence_4 = { c1ea14 0bde 8b701c 03df }
            // n = 4, score = 200
            //   c1ea14               | shr                 edx, 0x14
            //   0bde                 | or                  ebx, esi
            //   8b701c               | mov                 esi, dword ptr [eax + 0x1c]
            //   03df                 | add                 ebx, edi

        $sequence_5 = { c1ef10 0bfe 03781c 8b701c 8bde 33df 335810 }
            // n = 7, score = 200
            //   c1ef10               | shr                 edi, 0x10
            //   0bfe                 | or                  edi, esi
            //   03781c               | add                 edi, dword ptr [eax + 0x1c]
            //   8b701c               | mov                 esi, dword ptr [eax + 0x1c]
            //   8bde                 | mov                 ebx, esi
            //   33df                 | xor                 ebx, edi
            //   335810               | xor                 ebx, dword ptr [eax + 0x10]

        $sequence_6 = { 0bdf 03f3 8b7818 337814 }
            // n = 4, score = 200
            //   0bdf                 | or                  ebx, edi
            //   03f3                 | add                 esi, ebx
            //   8b7818               | mov                 edi, dword ptr [eax + 0x18]
            //   337814               | xor                 edi, dword ptr [eax + 0x14]

        $sequence_7 = { 6a00 51 8d95d0feffff 52 50 ff15???????? }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   51                   | push                ecx
            //   8d95d0feffff         | lea                 edx, [ebp - 0x130]
            //   52                   | push                edx
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_8 = { ff45e8 eb07 c745e800000000 8b45f4 85c0 7418 8d78f8 }
            // n = 7, score = 200
            //   ff45e8               | inc                 dword ptr [ebp - 0x18]
            //   eb07                 | jmp                 9
            //   c745e800000000       | mov                 dword ptr [ebp - 0x18], 0
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   85c0                 | test                eax, eax
            //   7418                 | je                  0x1a
            //   8d78f8               | lea                 edi, [eax - 8]

        $sequence_9 = { 6a00 56 e8???????? 83c40c 6a00 8d450c 50 }
            // n = 7, score = 200
            //   6a00                 | push                0
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   6a00                 | push                0
            //   8d450c               | lea                 eax, [ebp + 0xc]
            //   50                   | push                eax

    condition:
        7 of them and filesize < 73728
}