W32.Storm.Worm arrives on a victim system as a file attached to spam emails, where it loads a malicious service named "wincom32". It seeks out Microsoft Internet Information Services (IIS) systems that have not had the proper security patches applied. Any such systems that it finds are then infected with the worm. The payload of this worm performs a DoS attack on http://www.microsoft.com.
The following systems are affected:
Use antivirus software to scan and clean the system.
Do not open suspicious email.