Worm w32.vbna.b is aimed at featuring other malwares. Being itself rather tiny infection it is chiefly concerned with introduction of other threats in compressed and codified mode. Decoding and decompressing is performed by the worm.
The malware executes network activities, namely spreads its copies across the memory of computer system infected, including external drives available for inserting information and removable mass storage.
Removal of worm w32.vbna.b is only complete after all its copies are deleted in all the locations accessible from your PC. If the infection report recurs, probably the rogue comes from another computer in your local network. In such case, it is recommended that you notify your network administrator on the issue.
Click here to run free scan and get rid of worm w32.vbna.b along with other malwares it has already dropped; it is strongly advised that other computers in your local network undergo the same treatment.