1995-2002 Symantec Corporation. All rights reserved. Legal Notices Privacy Policy BAT911.Worm BAT911.Worm is an Internet worm that uses .bat files to search through a range of IP addresses of known ISPs to find an accessible computer. If an accessible computer shares its C drive, it copies its files onto the other computer. Also known as: BAT.Chode.Worm, Chode, Foreskin, BAT911, 911 Worm, W95.