Hi, have you sorted it out?
"CloudScout is a malicious and pesky adware program which has the ability to add new browser add-on without asking for any permission.
CloudScout is able to track your online history and browsing cookies." (Quoted from this post)
It seems the malware is rather dangerous. Without doubt, it's wise to clean out all its components to save your machine as well as the privacy.
Hope this helps!