Adware:Adware (or spyware) is a small program that is designed to show advertisements (in various form and degrees of intrusiveness) on your computer. It often reports personal information back to its owners. As a result your sense of privacy can be violated.
FirstCash Websearch is a parasitic adware application, which shows unwanted advertisements in your web browser or within its host software. It can be secretly installed by some ad-supported software or malicious web sites.
Technical details (How to remove FirstCash Websearch(pop up))