I had tried everything recommended on this forum and still had two versions of this adware: "unisales" and "uenisales". We even purchased the premium version of Malewarebytes and it still didn't find this extension. Two thing I did successfully removed this adware from my machine.
1- I went to the Start button and typed in "regedit" to list the registry keys. If you click and highlight My Computer and do a "Control + F" to find "unisales", it will find the registry keys associated with the program and you can delete them. This, by itself, did not work for me
2-Part of my problem was that windows was configured to not show hidden files, so the "ProgramData" folder wasn't apparent on my C-drive. Go to the Control Panel, click on Appearance and Personalization>Folder Options>View Tab> click on the radial button to view hidden files. Then, when you launch Chrome and go to "More Tools" under the Wrench option and list "Extensions", click on the "Developer Mode" button and it will show you the folder that "Unisales" is associated with. Delete these folders. Once I actually found the folders, I was able to successfully get rid of Unisales in both of its versions..
Bonne Chance...