By default log browser does not show all log columns. In order to find more information of log entry two options come to mind.
Double click log entry which opens detailed view. Interesting fields could be "responding scanner", "virus-identifier", GTI file reputation in ths case. For web traffic "HTTP request URI" log field shows also name of the file which might be useful.
These same fields can be added to normal log browser view too. Just right click any header column in log browser and select column selection. From new window which opens columns can be added or removed.