It's part of Background Banking. After you boot your PC, it starts
(along with mnyschdl.exe) when you start M03, and continues running even
after you close M03. Type mis.exe in Help > Ask Money, these two files
are mentioned. See also http://umpmfaq.info/faqdb.php?q=87

Wally wrote:
- quote -

The mis.exe process runs as part of my Money 2003
Canadian Edition program. It takes up large amounts of
memory (as much as 75000k) and CPU power. This slows
down my system considerably. Further more, the process
does not shut down when I close the Money program. Can
anyone tell me anything about this process and what I can
do to get it to shut down when I close Money besides
manually going in and killing it?