Originally posted by: 911paramedic
Mad
Process File: mad or mad.exe
Process Name: System Attendant Service
Description: The System Attendant Service for Microsoft Exchange Server runs in the background and is needed by Microsoft Exchange Server. It loads DLLs for Microsoft Exchange, writes log messages and generates the offline address books
Common Errors: N/A
System Process: No
Edit: Doesn't mean mad is necessarily a virus.