A file has been created in the root of Symantec Endpoint Protection (SEP)'s VirusDefs folder. The file has the .db extension. It may be seen as Cat.db or umcat_01.db. What is the purpose of this file?
This file is from the core component SymVT. SymVT is designed to verify known trusted files. In order to do so it creates a catalog database for lookups of known signed files. The file is placed one directory up from the dated definitions folder so that definitions refresh wouldn’t result in requiring a re-creation of the entire database.
There is no need for any end user interaction with this file.