This backdoor is a Java applet that uses a vulnerability in the
Netscape's implementation of Java virtual machine.
When the user enters a hostile web page with the Netscape browser, the
Basically the backdoor acts like a file server. When it is active, it
allows access to the contents of the victim's hard drive using the http
protocol. By default is listens on the port 8080, but this can be
The backdoor runs in top of Netscape's implementation of Java virtual
machine and it terminates as soon as JVM terminates - usually when the
browser is closed.
The backdoor does not install anything on the victim machine.
F-Secure Anti-Virus detects the class file when it is accessed.
To prevent this and similar problems in the future, you can turn off
the Java functionality from Netscape's Preferences.
[Analysis: Sami Rautiainen, F-Secure, August 2000]