yesterday, the installed AVG virus protection kept warning me of the mentioned Exploit:JS/Neclu.M. I let it remove that threat it found and restarted. but the virus reappeared.
how to resolve this problem permanently?
then run your operating system in safe mode with networking -> update your avg software to the latest version of it -> scan your all drives you have so you can cleanly remove Exploit:JS/Neclu.M.