Trojan-Downloader.JAVA.Openstream

Discussion in 'malware problems & news' started by PeterJT, Dec 9, 2004.

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  1. PeterJT

    PeterJT Registered Member

    Joined:
    Dec 9, 2004
    Posts:
    1
    I am writing an applet using JBuilder, to upload large files to a server by chopping them into sections and sending each section separately.

    Unfortunately my Kaspersky anti-virus identifies the basic applet as this Trojan-Downloader.Java.Openstream.

    I doubt if JBuilder4 is adding malicious code to the applet, so it is simply the following code ( not even working yet, just a few ideas typed in)

    How to I prevent an applet being identified as this trojan?

    package applet2;

    import java.awt.*;
    import java.awt.event.*;
    import java.applet.*;
    import javax.swing.*;
    /**
    * Title: Uploader for Multihandler
    * Description: Large file uploader
    * Copyright: Copyright (c) 2004
    * Company: Peter Thomson
    * @author Peter Thomson
    * @version 1.0
    */


    public class Applet1 extends JApplet {
    boolean isStandalone = false;
    String var0;
    String var1;
    public String uploadfilename;
    JFileChooser jFileChooser1 = new JFileChooser();
    Box box1;
    TextField textField1 = new TextField();
    TextField textField2 = new TextField();
    Button Uploadbutton = new Button();
    /**Get a parameter value*/
    public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
    (getParameter(key) != null ? getParameter(key) : def);
    }

    /**Construct the applet*/
    public Applet1() {
    }
    /**Initialize the applet*/
    public void init() {
    try {
    var0 = this.getParameter("param0", "");
    }
    catch(Exception e) {
    e.printStackTrace();
    }
    try {
    var1 = this.getParameter("param1", "");
    }
    catch(Exception e) {
    e.printStackTrace();
    }
    try {
    jbInit();
    }
    catch(Exception e) {
    e.printStackTrace();
    }
    }
    /**Component initialization*/
    private void jbInit() throws Exception {
    box1 = Box.createHorizontalBox();
    this.setSize(new Dimension(400,300));
    textField1.setText("None selected");
    jFileChooser1.addActionListener(new java.awt.event.ActionListener() {
    public void actionPerformed(ActionEvent e) {
    jFileChooser1_actionPerformed(e);
    }
    });
    textField2.setText("You have chosen");
    Uploadbutton.setLabel("Upload file");
    Uploadbutton.addMouseListener(new java.awt.event.MouseAdapter() {
    public void mouseClicked(MouseEvent e) {
    Uploadbutton_mouseClicked(e);
    }
    });
    this.getContentPane().add(jFileChooser1, BorderLayout.SOUTH);
    this.getContentPane().add(box1, BorderLayout.CENTER);
    box1.add(textField2, null);
    box1.add(textField1, null);
    this.getContentPane().add(Uploadbutton, BorderLayout.EAST);
    }
    /**Start the applet*/
    public void start() {
    }
    /**Stop the applet*/
    public void stop() {
    }
    /**Destroy the applet*/
    public void destroy() {
    }
    /**Get Applet information*/
    public String getAppletInfo() {
    return "Applet Information";
    }
    /**Get parameter info*/
    public String[][] getParameterInfo() {
    String[][] pinfo =
    {
    {"param0", "String", "url"},
    {"param1", "String", ""},
    };
    return pinfo;
    }

    //static initializer for setting look & feel
    static {
    try {
    //UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
    //UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
    }
    catch(Exception e) {
    }
    }

    void jFileChooser1_actionPerformed(ActionEvent e) {
    uploadfilename=jFileChooser1.getSelectedFile().getPath();
    textField1.setText(jFileChooser1.getSelectedFile().getName());

    System.out.println("action taken here" + uploadfilename );
    }

    void Uploadbutton_mouseClicked(MouseEvent e) {

    upload_file_name newup=new upload_file_name(uploadfilename);

    System.out.println("action taken here " + uploadfilename );
    }
    }
     
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