Manual removal instructions:
Is the file closewnd.exe located on your computer? Your computer is infected.
We highly recommend you to remove closewnd.exe from your computer as soon as possible.
closewnd.exe is Trojan/Backdoor.
Kill the process closewnd.exe and remove closewnd.exe from Windows startup.
UnHackMe anti-rootkit and anti-malware
Premium software: RegRun Security Suite (Good choice for removal and protection)