Additional Details
Worm:W32/PSW-Worm indicates the presence of suspicious files inside encrypted archive files.
Some e-mail worms, like the widespread Bagle worm family, uses password-protected files in an attempt to fool antivirus scanners. F-Secure Anti-Virus provides methods that can be used to detect the presence of such files. These methods provide generic detection and work for all present and future worms that uses a similar technique.