rule win_ngioweb_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.ngioweb."
        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.ngioweb"
        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 = { 7602 8bc6 6a00 50 ff7508 8d45e0 50 }
            // n = 7, score = 500
            //   7602                 | jbe                 4
            //   8bc6                 | mov                 eax, esi
            //   6a00                 | push                0
            //   50                   | push                eax
            //   ff7508               | push                dword ptr [ebp + 8]
            //   8d45e0               | lea                 eax, [ebp - 0x20]
            //   50                   | push                eax

        $sequence_1 = { 6a01 ff760c ff7608 57 e8???????? 57 e8???????? }
            // n = 7, score = 500
            //   6a01                 | push                1
            //   ff760c               | push                dword ptr [esi + 0xc]
            //   ff7608               | push                dword ptr [esi + 8]
            //   57                   | push                edi
            //   e8????????           |                     
            //   57                   | push                edi
            //   e8????????           |                     

        $sequence_2 = { ffd0 f6451c01 740b 66837e0601 7504 83651cfe 53 }
            // n = 7, score = 500
            //   ffd0                 | call                eax
            //   f6451c01             | test                byte ptr [ebp + 0x1c], 1
            //   740b                 | je                  0xd
            //   66837e0601           | cmp                 word ptr [esi + 6], 1
            //   7504                 | jne                 6
            //   83651cfe             | and                 dword ptr [ebp + 0x1c], 0xfffffffe
            //   53                   | push                ebx

        $sequence_3 = { 52 c7453438deda72 66c74538e4fa 66c7453a3e4b c6453cba c6453df4 c6453e5d }
            // n = 7, score = 500
            //   52                   | push                edx
            //   c7453438deda72       | mov                 dword ptr [ebp + 0x34], 0x72dade38
            //   66c74538e4fa         | mov                 word ptr [ebp + 0x38], 0xfae4
            //   66c7453a3e4b         | mov                 word ptr [ebp + 0x3a], 0x4b3e
            //   c6453cba             | mov                 byte ptr [ebp + 0x3c], 0xba
            //   c6453df4             | mov                 byte ptr [ebp + 0x3d], 0xf4
            //   c6453e5d             | mov                 byte ptr [ebp + 0x3e], 0x5d

        $sequence_4 = { 85c0 8945fc 7507 50 56 e8???????? }
            // n = 6, score = 500
            //   85c0                 | test                eax, eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   7507                 | jne                 9
            //   50                   | push                eax
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_5 = { 83f808 7267 668b4d14 66894e02 8b4d0c 3bca }
            // n = 6, score = 500
            //   83f808               | cmp                 eax, 8
            //   7267                 | jb                  0x69
            //   668b4d14             | mov                 cx, word ptr [ebp + 0x14]
            //   66894e02             | mov                 word ptr [esi + 2], cx
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   3bca                 | cmp                 ecx, edx

        $sequence_6 = { 8b7508 57 33d2 33ff 3bf2 0f8482000000 }
            // n = 6, score = 500
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   57                   | push                edi
            //   33d2                 | xor                 edx, edx
            //   33ff                 | xor                 edi, edi
            //   3bf2                 | cmp                 esi, edx
            //   0f8482000000         | je                  0x88

        $sequence_7 = { ffd0 a3???????? c3 8325????????00 c3 55 8bec }
            // n = 7, score = 500
            //   ffd0                 | call                eax
            //   a3????????           |                     
            //   c3                   | ret                 
            //   8325????????00       |                     
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp

        $sequence_8 = { c6852ffeffffbd c68530feffffa3 c68531feffffc5 c68532feffffa3 c68533feffffa3 c68534feffff9f c68535feffffc3 }
            // n = 7, score = 500
            //   c6852ffeffffbd       | mov                 byte ptr [ebp - 0x1d1], 0xbd
            //   c68530feffffa3       | mov                 byte ptr [ebp - 0x1d0], 0xa3
            //   c68531feffffc5       | mov                 byte ptr [ebp - 0x1cf], 0xc5
            //   c68532feffffa3       | mov                 byte ptr [ebp - 0x1ce], 0xa3
            //   c68533feffffa3       | mov                 byte ptr [ebp - 0x1cd], 0xa3
            //   c68534feffff9f       | mov                 byte ptr [ebp - 0x1cc], 0x9f
            //   c68535feffffc3       | mov                 byte ptr [ebp - 0x1cb], 0xc3

        $sequence_9 = { 50 8d454c 50 56 e8???????? 83c424 }
            // n = 6, score = 500
            //   50                   | push                eax
            //   8d454c               | lea                 eax, [ebp + 0x4c]
            //   50                   | push                eax
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c424               | add                 esp, 0x24

    condition:
        7 of them and filesize < 204800
}