JS script XE in my firefox

avast found JS script XE in my firefox profiles something by dean edwards? Didn’t have time to stop my computer when it found it so aught it on boot scan

its in the vault now but comp is acting weird, mouse moving, firefox not responding

do I need to do dss logs HJT etx?

HJT is not any good,
so you follow this guide and attach (not copy and paste) Malwarebytes / OTL / aswMBR logs
http://forum.avast.com/index.php?topic=53253.0

then later today one of the malware removers will help you

Dean Edwards packer info
http://sucuri.net/malware/malware-entry-mwjsdepack