That url (200.56.243.137) produces an immediate antivirus block when connection is attempted; the AV info describes it as a malicious attack site.
As hellsbrink said, you have a malicious program (keylogger, or whatever) installed on your machine now that is attempting to connect outbound. Fortunately blocked by your AV.
MBAM is a very good demand scanner/cleaner. That's what I'd do next.