This is basically what I deal with at work every day. They've gotten worse lately because of a ton of websites with scripts that have been compromised, or ads that have been compromised.
Solution:
RKill it from memory.
Combofix.
Malware bytes full scan.
The first two you can google and download from bleepingcomputer.
The third can also be found on google.
I keep a thumbdrive with all 3 on it. =|
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