Additional Details
Worm:W32/Brontok is a large family of worms capable of spreading through various channels, such as e-mails, removable drives and so on.
Brontok variants typically include a malicious payload, such as terminating processes, disabling programs or features of the operating system and attempting to connect to remote servers.
For representative examples of Brontok variants, see:
Propagation
Some variants in the Brontok family can propagate over multiple vectors, i.e., they can spread via both infected e-mail file attachments and infected removable drives.