Bolzano infects Win32 EXE files. There are several variants.
Bolzano.A, B and C infect EXE files in traditional manner, while Bolzano.D uses inserting technique to infect EXE files.
Under Windows NT, Bolzano modifies NTOSKRNL.EXE so that any user has the rights to modify any file on NTFS volumes, regardless of their real user rights.
Bolzano is not common in the wild.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.