From the McAfee site
"VirusScan and other McAfee products with DAT files 4168 are protected from this variant without any updating from that DAT. The variant will be detected as W32/Badtrans@MM when scanning compressed files."
and
"AVERT has raised the Risk Assessment on the Badtrans.b variant to Medium On Watch. We have received many reports that the virus is being seen and stopped at corporate gateways and mailservers. However, we continue to get reports from the home user segment that they have become infected. This is due to the fact that home users tend to update their DAT files less frequently and often do not have VirusScan configured to scan compressed files which is required for detection."
Two points may be relevant.
Dat 4168 or later is required.
(Current Dat is 4172 Dated 21 Nov 01)
VirusScan must be configured to include compressed files in the scan.
Regards
Snooze