What's the attrib.exe?
they are used my CPU near to 100%
You have not indicated the full path of the files, but there should be only two, and they should not be running unless manually invoked:
C:\Windows\System32\attrib.exe
C:\Windows\SysWOW64\attrib.exe
Your computer is most likely infected by a virus. See the article
How can I remove malicious spyware, malware, adware, viruses, trojans or rootkits from my PC?.