The iWorld

Ketawa.A Trojan can reach to the computer of the users through email or as being a part of any Internet download such as software or any application or utility. When Ketawa.A Trojan is executed, Ketawa.A Trojan opens a browser window with a joke in Indonesian language in a similar way to some spam messages.

This Ketawa.A Trojan attempts and modifies the Windows registry entries to confirm that it is automatically executed every time the system restarts. The Ketawa.A Trojan also creates some hidden files on the computer and modifies the registry entries in such a way so as to hide all changes that it makes on the infected computer system.

So just take care of this Ketawa.A Trojan and make sure that Ketawa.A Trojan never comes on to your computer and infacts your computer.