upload suspicious file(s) to www.virustotal.com and test with 40+ malware scanners

alternative: www.metascan-online.com / www.jotti.org

seems to be part of conduit http://processchecker.com/file/checktbexist.exe.html conduit often install some toolbar crap

run Malwarebytes quick scan, make sure it is updated before scan, if anything is detected make sure it is marked for removal and click remove selected
you find it here http://forum.avast.com/index.php?topic=53253.0