rule win_laziok_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.laziok."
        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.laziok"
        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 = { 8b542418 8d0c24 e8???????? 8b54241c 8d4c2404 }
            // n = 5, score = 900
            //   8b542418             | mov                 edx, dword ptr [esp + 0x18]
            //   8d0c24               | lea                 ecx, [esp]
            //   e8????????           |                     
            //   8b54241c             | mov                 edx, dword ptr [esp + 0x1c]
            //   8d4c2404             | lea                 ecx, [esp + 4]

        $sequence_1 = { 57 ff74240c 33f6 ff35???????? e8???????? }
            // n = 5, score = 900
            //   57                   | push                edi
            //   ff74240c             | push                dword ptr [esp + 0xc]
            //   33f6                 | xor                 esi, esi
            //   ff35????????         |                     
            //   e8????????           |                     

        $sequence_2 = { 33c0 668945fc 8d85f4fdffff 50 }
            // n = 4, score = 900
            //   33c0                 | xor                 eax, eax
            //   668945fc             | mov                 word ptr [ebp - 4], ax
            //   8d85f4fdffff         | lea                 eax, [ebp - 0x20c]
            //   50                   | push                eax

        $sequence_3 = { 8bf0 85f6 740b 837c240cff 8937 }
            // n = 5, score = 900
            //   8bf0                 | mov                 esi, eax
            //   85f6                 | test                esi, esi
            //   740b                 | je                  0xd
            //   837c240cff           | cmp                 dword ptr [esp + 0xc], -1
            //   8937                 | mov                 dword ptr [edi], esi

        $sequence_4 = { 668945f2 8b460c 85c0 7404 8b00 eb03 8b4610 }
            // n = 7, score = 900
            //   668945f2             | mov                 word ptr [ebp - 0xe], ax
            //   8b460c               | mov                 eax, dword ptr [esi + 0xc]
            //   85c0                 | test                eax, eax
            //   7404                 | je                  6
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   eb03                 | jmp                 5
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]

        $sequence_5 = { ff3424 e8???????? ff742410 e8???????? }
            // n = 4, score = 900
            //   ff3424               | push                dword ptr [esp]
            //   e8????????           |                     
            //   ff742410             | push                dword ptr [esp + 0x10]
            //   e8????????           |                     

        $sequence_6 = { eb11 8b460c 85c0 751a ff7610 ff15???????? }
            // n = 6, score = 900
            //   eb11                 | jmp                 0x13
            //   8b460c               | mov                 eax, dword ptr [esi + 0xc]
            //   85c0                 | test                eax, eax
            //   751a                 | jne                 0x1c
            //   ff7610               | push                dword ptr [esi + 0x10]
            //   ff15????????         |                     

        $sequence_7 = { 0fb74608 50 ff15???????? 668945f2 8b460c 85c0 7404 }
            // n = 7, score = 900
            //   0fb74608             | movzx               eax, word ptr [esi + 8]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   668945f2             | mov                 word ptr [ebp - 0xe], ax
            //   8b460c               | mov                 eax, dword ptr [esi + 0xc]
            //   85c0                 | test                eax, eax
            //   7404                 | je                  6

        $sequence_8 = { 85c0 7404 8b00 eb03 8b4610 6a10 }
            // n = 6, score = 900
            //   85c0                 | test                eax, eax
            //   7404                 | je                  6
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   eb03                 | jmp                 5
            //   8b4610               | mov                 eax, dword ptr [esi + 0x10]
            //   6a10                 | push                0x10

        $sequence_9 = { 668945f0 8b4604 8945f4 0fb74608 50 ff15???????? 668945f2 }
            // n = 7, score = 900
            //   668945f0             | mov                 word ptr [ebp - 0x10], ax
            //   8b4604               | mov                 eax, dword ptr [esi + 4]
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   0fb74608             | movzx               eax, word ptr [esi + 8]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   668945f2             | mov                 word ptr [ebp - 0xe], ax

    condition:
        7 of them and filesize < 688128
}