According to S!Ri (Merci pour la sample):
HDD Defragmenter is a fake Defragmenter tool (rogue) from the same family as: System Defragmenter
HDD Defragmenter displays a lot of disturbing disks errors messages, prevent softwares execution pushing users to purchase a license.
If you need to clean your computer and HDD Defragmenter is blocking legit cleaners execution, enter any email and use this serial to register: 0973467457475070215340537432225
If your PC is infected with HDD Defragmenter use MBAM to remove the infection.