It's almost certainly not malware ("virus" means a specific type of malware, and there aren't any actual android viruses). Malware infections are much rarer than the impression the internet gives, and this started after something you did.
Unfortunately I'm not familiar enough with Sony to know what you mean by "gadgets in your browser window", so probably can't advise on fixing it. If you can explain what you did to "bypass" it that might help.