Detailed Analysis @ Greynet BlogThere is a lot of talk out there in the Ether about worms that are spreading through MSN clients and adding unsuspecting users to their botnet. These kinds of attacks are among the most dangerous, and pose a very real security threat. It doesn't take much of an imagination to think that these attackers will DDoS attack their enemies. There are dozens of these kinds of worms floating out there however. FSL recently uncovered one we dub, NextDoor. Like the other worms of its kind, once it is on the infected PC it will attempt to contact all contacts in order to infect more users. The difference in these worms is what they do to the victim after they have been attacked. Some will simply show advertisements or a wide variety of porn; others tend to log keystrokes of the victim in order to learn very sensitive information like passwords or credit card information. NextDoor installs a dialer (called Carlson Dialer) onto the victims PC to make long distance calls.
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