Not a techie here but comfortable on my computer. I am part of a local wireless system. For whatever reason, this morning I got hit with the “Security Master AV” malware. I registered at bleepingcomputer.com and followed the removal steps. They worked until I came to the Hostsperm.bat download. I downloaded it but cannot access it and it gives me this message “hostsperm.bat is not a valid Win32 application”. I think I need to access this because 30 minutes after removing the malware, it returned. Also, in a related question, I have been running AVIRA as my security and up until now, I have been satisfied. It obviously did not help me this morning. I am due to renew my AVIRA protection in two weeks. Which is a better protection system: AVIRA or Malwarebytes?