Malformed packed [exception occurred] customize message

Hi, I am getting a malformed packed error and description as [Malformed Packet: (Error/Malformed): Malformed Packet (Exception occurred) [Message: Malformed Packet (Exception occurred) ] [Severity level: Error ] [Group: Malformed]

I want to identify the code where this exception is being occurring. How can I find that? and also I need it just to display Malformed Packed, if any instead of Malformed Packet (Exception occurred). ?