Removing an icon from Mac OS X menubar when Cmd+Drag won't work I noticed this message icon show up on my menubar and I can't tell which app it belongs to. I've tried to click on the "settings" gear but it doesn't take me to anything. 

The icon is a square chat icon - I would upload it but I don't have enough reputation points on this site yet to do so.

I'd like to:


Figure out which app this icon belongs to 
Disallow the service/app from running on my system 
Remove it from my menubar.


How can I do this?
If it is opened at login, check login items in the Users &amp; Groups preference pane, {~,}/Library/Launch{Daemons,Agents}/, or /var/db/launchd.db/com.apple.launchd.peruser.501/overrides.plist.

You could also try opening Activity Monitor and quitting all processes that seem suspicious.