Viver is a family of Symbian application trojans that send premium-rate SMS messages.
The trojans activate as soon as the SIS file containing the trojan is installed. It then starts to send SMS messages to premium-rate numbers.
Trojans of Viver family affect Symbian S60 2nd Edition and older, which means that the latest device affected is Nokia N70.
Disinfection & Removal
F-Secure Mobile Anti-Virus for Symbian detects this malware starting from the update build number 124.