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. Interop.IWshRuntimeLibrary.dll is the library is an interop assembly of the IWshRuntimeLibrary and is recompiled by Laroste Apps. The file Interop.IWshRuntimeLibrary.dll, re-signed by Laroste Apps, is an Interop assembly that has been intergated by a 3rd-party into a .Net application, even though the assembly itself is most likely safe, it has been recompiled by a potentially unwanted program. Note, this is a common distributed file and although it has been detected it might not be a threat is un-coupled from its distribution source. It is distributed as part of the Brightcircle group of browser-extensions.