persfw.exe is Kerio's personal firewall. More information can be found here.
Quote: Tiny Firewall 6 is the greatest security solution for the windows based
host presented to general public to date. The suite of features covers
the protection from various angles - from network security, file and
registry protection, application launch control and management through
signature based Intrusion detection and Prevention.
Most importantly - these security features are packed into user
friendly tools - such as Track'n Reverse tool which allows to erase
changes made to the computer by the applications. Whenever you are
unsure about the application behavior - just put it into the Track'n
Reverse mode knowing that all your files and registry will be protected
and the changes including the deletions could be brought back.
Every attempt has been made to ensure the information about persfw.exe is accurate but alot of malware applications try to pose as valid applications. If it is something other than what was posted above please leave some feedback in the forum.