Trojan:SymbOS/Fontal.B prevents the Symbian device from booting properly at the next reboot.
F-Secure Mobile Security will detect Fontal.B and delete the trojan's components.
After disinfecting the phone, remove remaining empty directories by going to the Application Manager and uninstalling the SIS file in which Fontal.B arrived (Nokia Anti-Virus.sis).
CAUTION This method will remove all data on the device, including calendar and phone numbers.
Find the latest advice in our Community Knowledge Base.
See the manual for your F-Secure product on the Help Center.
Submit a file or URL for further analysis.
Trojan:SymbOS/Fontal.B is distributed in a malicious SIS named 'Nokia Anti-Virus.sis', which claims to be "Nokia Anti-Virus for Symbian" devices. When installed, Fontal.B will show the following installation text:
Nokia Anti-Virus keep your phone protected from mobile virus. Please restart your phone after installation complete to activate your anti-virus product. If you found any problem regarding this software, please call : [OBFUSCATED]
If a phone is infected with Fontal.B, it must not be rebooted as the trojan will prevent the phone from booting again. If the phone is rebooted, it will try to boot, but will be forever stuck on phone startup and cannot be used.
When the Fontal.B SIS file is installed the installer copies files into following locations: