Qzap-248 overwrites the boot sector of the hard disk so that during boot up, the following message is displayed :
"NOTICE: Illegal Microsoft Windows license detected! You are in violation of the Digital Millennium Copyright Act! Your unauthorized license has been revoked. For more information, please call us at: 1-888-NOPIRACY If you are outside the USA, please look up the correct contact information on our website, at: www.bsa.org Business Software Alliance Promoting a safe & legal online world."
Qzap-248 overwrites all other sectors of the hard disk with random bytes, wiping out all information on the hard disk.