rule win_azov_wiper_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.azov_wiper."
        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.azov_wiper"
        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 = { 660f1f440000 488b05???????? 488b0b 488b10 ff5250 488d5b08 4883ef01 }
            // n = 7, score = 100
            //   660f1f440000         | jne                 0x12ba
            //   488b05????????       |                     
            //   488b0b               | dec                 eax
            //   488b10               | mov                 ecx, ebx
            //   ff5250               | dec                 eax
            //   488d5b08             | mov                 edx, dword ptr [eax]
            //   4883ef01             | dec                 eax

        $sequence_1 = { c74424204c006f00 33c9 c744242463006100 c74424286c005c00 4c8b08 8d5601 }
            // n = 6, score = 100
            //   c74424204c006f00     | lea                 edi, [esp + 0x310]
            //   33c9                 | mov                 ecx, 8
            //   c744242463006100     | rep stosb           byte ptr es:[edi], al
            //   c74424286c005c00     | dec                 eax
            //   4c8b08               | mov                 edi, dword ptr [esp + 0x310]
            //   8d5601               | je                  0x1fd

        $sequence_2 = { 6685c0 75f0 488d47fe 6683780200 }
            // n = 4, score = 100
            //   6685c0               | sub                 esp, 8
            //   75f0                 | xor                 eax, eax
            //   488d47fe             | dec                 eax
            //   6683780200           | lea                 edi, [esp + 0x40]

        $sequence_3 = { 488d8c2450040000 e8???????? 85c0 0f840a010000 488d4c2450 }
            // n = 5, score = 100
            //   488d8c2450040000     | push                ebx
            //   e8????????           |                     
            //   85c0                 | dec                 eax
            //   0f840a010000         | sub                 esp, 0x20
            //   488d4c2450           | dec                 eax

        $sequence_4 = { 0f85d4000000 488b05???????? 488d15b4f1ffff 33c9 4533c9 48894c2440 4533c0 }
            // n = 7, score = 100
            //   0f85d4000000         | rol                 ecx, 1
            //   488b05????????       |                     
            //   488d15b4f1ffff       | dec                 eax
            //   33c9                 | test                ecx, ecx
            //   4533c9               | jne                 0x684
            //   48894c2440           | je                  0x68a
            //   4533c0               | inc                 ecx

        $sequence_5 = { 0f848a000000 488b05???????? 4c8d4c2470 458bc6 48895c2420 488bd7 488bcd }
            // n = 7, score = 100
            //   0f848a000000         | dec                 eax
            //   488b05????????       |                     
            //   4c8d4c2470           | sub                 esp, 0x2e0
            //   458bc6               | xor                 ebp, ebp
            //   48895c2420           | inc                 eax
            //   488bd7               | and                 ah, 0xf0
            //   488bcd               | mov                 byte ptr [ebp - 0xd], 0x56

        $sequence_6 = { 488bbc2410030000 483bbc2418030000 0f8d91000000 0f1f4000 39ac2414030000 }
            // n = 5, score = 100
            //   488bbc2410030000     | nop                 dword ptr [eax]
            //   483bbc2418030000     | dec                 eax
            //   0f8d91000000         | mov                 dword ptr [eax], edi
            //   0f1f4000             | dec                 eax
            //   39ac2414030000       | mov                 dword ptr [eax + 8], edi

        $sequence_7 = { 4883c408 56 488b1424 4883c408 }
            // n = 4, score = 100
            //   4883c408             | test                ecx, ecx
            //   56                   | je                  0x56
            //   488b1424             | inc                 ecx
            //   4883c408             | call                dword ptr [edx + 0x160]

        $sequence_8 = { 48895c2420 4533c0 33c9 4c8b10 41ff92e0000000 4885c0 741e }
            // n = 7, score = 100
            //   48895c2420           | or                  eax, 0xffffffff
            //   4533c0               | dec                 eax
            //   33c9                 | test                ecx, ecx
            //   4c8b10               | je                  0xe86
            //   41ff92e0000000       | dec                 eax
            //   4885c0               | mov                 edx, dword ptr [eax]
            //   741e                 | call                dword ptr [edx + 0x168]

        $sequence_9 = { 488b0d???????? 488b11 488bcb ff9250010000 83f8ff }
            // n = 5, score = 100
            //   488b0d????????       |                     
            //   488b11               | cmp                 eax, -1
            //   488bcb               | je                  0x10ed
            //   ff9250010000         | call                dword ptr [eax + 0x40]
            //   83f8ff               | dec                 eax

    condition:
        7 of them and filesize < 73728
}