Versions

8.3.0.6	0.66%
8.0.6.4	1.32%
8.0.1.1	0.66%
8.0.0.139	1.32%
8.0.0.137	0.66%
8.0.0.117	0.66%
7.8.0.10	25.00%
7.7.0.9	7.24%
7.6.1.4	11.84%
7.6.0.7	31.58%
7.5.0.12	18.42%
7.1.1.5	0.66%

There are 12 versions of umengx86.dll in the wild, the latest version being 8.3.0.6. The average file size is about 237.46 KB. The file is a digitally signed and issued to Symantec Corporation by VeriSign.

SONAR Engine is part of Norton Internet Security, a PC program that provides malware prevention and removal during subscription period and uses signatures and heuristics to identify viruses, trojans and other malware. Norton Internet Security features include a email spam filtering, personal firewall, and phishing protection.