I recommend you UnHackMe - Ultimate Malware Killer for fast malware removal:
Free Download Fully Functional 30-day Trial. No credit card is required.
Reviews. EULA. Privacy Policy. Uninstall.
Is the file dnscache.exe located on your computer? Your computer is infected.
We highly recommend you to remove dnscache.exe from your computer as soon as possible.
dnscache.exe is Trojan/Backdoor.
Kill the process dnscache.exe and remove dnscache.exe from Windows startup.