Windows 2003/XP/2000/NT/ME/98/95

Koobface.IE is a worm that spreads by copying itself, without infecting other files.

• In the local network: it generates a large amount of network activity and consumes bandwidth.

It uses stealth techniques to avoid being detected by the user:

• It uses techniques included in its code to hide itself while it is active.
• It deletes the original file from which it was run once it is installed on the computer.

Koobface.IE uses the following propagation or distribution methods:

• Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
• Instant messaging: it sends links pointing to a copy of itself to all users included in the infected user's contacts list.