It's NOT a virus.
Your browser NEEDS to store a small amount of data in order to allow video to stream whtout stopping and restarting constantly.
Right click the Flash content and select "Global Settings".
Under the Storage tab, click "Local Storage Settings by Site".
Click the "+" and type "cdnbukmi.kalture.com" in the address box.
Choose "Allow" from the drop down menu and click "Add", then click "Close".
Make sure that "Allow sites to save information on this computer" is selected and close the Global Settings Manager.
You won't see the pop up from that site anymore.