A new version of the Bagle computer virus has been reported spreading via PCs in several countries.
The latest virus, Bagle.AI, spreads through e-mail as an attached file, which infects a user's PC when opened. The virus is extremely similar to previous versions of the program but uses a different form of compression as a way to dodge virus defences.

Bagle.AI arrives in e-mail as an attached file and infects computers running the Windows operating system as soon as the unsuspecting user opens the file. The program harvests e-mail addresses from the infected machine and sends out new messages to every address with itself attached. The "from" field in the e-mail is forged to confuse recipients as to the source of the message.

Like a previous version, the program also attempts to stop more than 250 security applications from running on the computer and contacts one of nearly 150 German Web sites to inform the attackers of their latest conquest.

Computers compromised by the virus are likely to be open to exploitation by spammers.

Bagle.AI also copies itself to any directory that bears a name containing the word "shar," a means of targeting users of peer-to- peer software and to spread across network shares


Source : NewsFactor




Btw..I just wonder how about with SP2 installed? Do we have to worry or not?