This instant messaging worm spreads in AOL Instant Messaging (AIM) network. It was found in December 2005.
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It sends copies of itself to people in the buddy list as a link, pointing to a file called clarissa17.pif.
After that it replies to all messages from other users with a message saying either "lol that's cool" or "lol no its not its a virus".
Detection for this malware was published on December 5th, 2005 in the following F-Secure
Detection Type: PC
Description Details: Mikko Hypponen, December 12th, 2005;