Where are you seeing it? Is SEP making any sort of detection?
This has been around for some time, see here:
https://www.virustotal.com/en/file/68ded50bf7c9b7f6961e6334b25fdad5d2369e461051d5a9fa1f1ebaadeb1d0e/analysis/1302535749/
Make sure your content is fully up to date and run a full scan.
Are you also employing IPS, SONAR, Download Insight, and the Firewall? If not, I would suggest enabling them for best protection.