Welcome to the Virus Encyclopedia of Panda Security.
Bagle.AB is a worm that spreads via e-mail in a message with variable characteristics and through peer-to-peer file sharing programs.
Bagle.AB ends processes belonging to antivirus and firewalls programs, among other security applications, as well as to several worms.
In addition, it attempts to connect to several websites that host a PHP script through the port 2535. By doing so, Bagle.AB notifies its author that the computer has been affected.
Bagle.AB is easy to recognize, as it displays the following fake error message once it has affected the computer: