Welcome to the Virus Encyclopedia of Panda Security.
It activates on or after December 24 2002, deleting the contents of the infected computer’s CMOS (BIOS or Setup information) and hard disk.
Opaserv.M is a worm that activates if the date is December 24 2002 or later.
The effects of Opaserv.M are very dangerous, as it deletes the infected computer's BIOS
information (CMOS memory) and the contents of the hard disk.
Opaserv.M spreads across networks and shared resources. It affects computers or resources (for example, communications ports) that are connected to other infected computers.
Opaserv.M exploits a vulnerability in Windows Me/98/95.
One it has infeted the computer, Opaserv.M restarts the infected machine and displays a message in an MS-DOS window.
This message simulates a warning about the version of the Windows operating system installed on the affected computer:
NOTICE:Illegal Microsoft Windows license detected!You are in violation of the Digital Millennium Copyright ActYour unauthorized license has been revokedFor more information, please call us at:NOPIRACYIf you are outside the USA, please look up the correct contact information on our website, at:www.bsa.orgBusiness Software AlliancePromoting a safe & legal online world
After displaying this message, Opaserv.M deletes the content of the computer's CMOS (BIOS) and hard disk.
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