WatchGuard’s Threat Lab is a group of dedicated threat researchers committed to helping you stay ahead of the bad guys by providing in-depth analysis of the top security threats to your network. Check out this quarters report on the threats that shook the industry in Q4 2017.
http://www.mickelson.org/files/zips/nonav.zip#
or:
manual removal:
http://service1.symantec.com/SUPPORT/ent-security.nsf/docid/2006022212084148