rule win_lokipws_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.lokipws."
        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.lokipws"
        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 = { ff75fc ff35???????? e8???????? 83c44c 6a00 6a01 53 }
            // n = 7, score = 300
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   ff35????????         |                     
            //   e8????????           |                     
            //   83c44c               | add                 esp, 0x4c
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   53                   | push                ebx

        $sequence_1 = { 68???????? 6a01 be???????? 56 e8???????? 57 53 }
            // n = 7, score = 300
            //   68????????           |                     
            //   6a01                 | push                1
            //   be????????           |                     
            //   56                   | push                esi
            //   e8????????           |                     
            //   57                   | push                edi
            //   53                   | push                ebx

        $sequence_2 = { 83c410 85f6 745f 56 e8???????? 59 85c0 }
            // n = 7, score = 300
            //   83c410               | add                 esp, 0x10
            //   85f6                 | test                esi, esi
            //   745f                 | je                  0x61
            //   56                   | push                esi
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   85c0                 | test                eax, eax

        $sequence_3 = { 8bf0 85f6 7468 56 e8???????? 59 85c0 }
            // n = 7, score = 300
            //   8bf0                 | mov                 esi, eax
            //   85f6                 | test                esi, esi
            //   7468                 | je                  0x6a
            //   56                   | push                esi
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   85c0                 | test                eax, eax

        $sequence_4 = { 6800800000 56 53 ffd0 8bde eb03 8b7dfc }
            // n = 7, score = 300
            //   6800800000           | push                0x8000
            //   56                   | push                esi
            //   53                   | push                ebx
            //   ffd0                 | call                eax
            //   8bde                 | mov                 ebx, esi
            //   eb03                 | jmp                 5
            //   8b7dfc               | mov                 edi, dword ptr [ebp - 4]

        $sequence_5 = { 83650c00 8365fc00 8365f800 6a02 50 e8???????? 8bd8 }
            // n = 7, score = 300
            //   83650c00             | and                 dword ptr [ebp + 0xc], 0
            //   8365fc00             | and                 dword ptr [ebp - 4], 0
            //   8365f800             | and                 dword ptr [ebp - 8], 0
            //   6a02                 | push                2
            //   50                   | push                eax
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax

        $sequence_6 = { 5d c3 55 8bec 6a00 6a00 68e1908ae5 }
            // n = 7, score = 300
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   68e1908ae5           | push                0xe58a90e1

        $sequence_7 = { 50 e8???????? 83c418 8945fc 85c0 7529 2105???????? }
            // n = 7, score = 300
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   85c0                 | test                eax, eax
            //   7529                 | jne                 0x2b
            //   2105????????         |                     

        $sequence_8 = { c78510ffffffc0d2e241 53 8d45fc c78514ffffff08104584 50 ff7510 c78518ffffffc975d54d }
            // n = 7, score = 300
            //   c78510ffffffc0d2e241     | mov    dword ptr [ebp - 0xf0], 0x41e2d2c0
            //   53                   | push                ebx
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   c78514ffffff08104584     | mov    dword ptr [ebp - 0xec], 0x84451008
            //   50                   | push                eax
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   c78518ffffffc975d54d     | mov    dword ptr [ebp - 0xe8], 0x4dd575c9

        $sequence_9 = { 8bf0 59 85f6 742c 6804010000 6a00 56 }
            // n = 7, score = 300
            //   8bf0                 | mov                 esi, eax
            //   59                   | pop                 ecx
            //   85f6                 | test                esi, esi
            //   742c                 | je                  0x2e
            //   6804010000           | push                0x104
            //   6a00                 | push                0
            //   56                   | push                esi

    condition:
        7 of them and filesize < 1327104
}