This adware is a web browser extension that will inject advertising in the browser in the form of unwanted banners and text-links which may link to malware sites and install unwanted software. The application koala personal search-buttonutil64.exe, “Koala Personal Search exe” by Bohr­-ium Group has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. It is built using the Crossrider cross-browser extension toolkit. While the file utilizes the Crossrider framework and delivery services, it is not owned by Crossrider. It is part of the Brightcircle group of web-extensions that inject advertisements in the browser.