When I click on a row it highlights the line with blue background (regular behaviour), but when I mouseover other rows it highlights them too.
How can I disable this?
Unfortunately, there is no built-in Windows settings that support disabling that highlight. It can be achieved, but only by modifying the Windows theme. This will require a Windows resource editor and a patch to allow custom themes to be applied (for example, UltraUXThemePatcher). You will need to open the .msstyles file of the theme with the resource editor, and replace the existing image with a transparent image. The theme images are under the "IMAGE" or "IMG" entry under the resource editor. The number of the actual image to replace will depend on the underlying theme and the windows version. For Windows 8.1, with the built-in aero theme, the image number is #605 for the File Explorer mouse-over highlight.
An easier alternative to using a resource editor, is using a theme making program such as Windows Style Builder. This is however a paid application, and I'm not sure how good the Windows 8 support is.