叫做 W32/Funner.A-mm
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Symantec, McAfee and Trend are reporting a new worm that spreads using the MSN or Microsoft Messenger address book. Sounding like a kid`s idea of a good time, W32/Funner.A-mm, is a moderately destructive worm that creates copies of itself called "Explorer.exe" and "IExplorer.exe" in the Windows system folder. It also adds 937 web site entries to the victim`s HOSTS file, pointing all requests for these sites to a single IP address. See our top threat for more information.