Bahisho Worm - Spreads to ISO/NRG imaging file extensions

The ISO and NRG extensions used for CD imaging capabilities may need to be added to AV file extention lists 

Bahisho Worm - Spreads to ISO/NRG imaging file extensions
http://secunia.com/virus_information/30924/bahisho.a/

QUOTE: This worm propagates by searching for images with .ISO and .NRG file extensions in random folders. When the said image files are found, it drops its copy into the folder where the image files are located. In effect, when an optical disk image or an .NRG image file is burned, this worm copies itself into the CD or CD-ROM. ISO images (.ISO) are optical disk or Universal Disk Format (UDF) image files, while .NRG files are image files associated with the application Nero.