Threat Description



Category: Malware
Platform: W32
Aliases: Bolzano


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.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

For further assistance, F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Description Details: By Mikko Hypponen, based on information from Peter Szor, 1997


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