your antivirus is detecting Oldtimer’s OTL
From Virus Total:
File name: OTL.exe
Submission date: 2011-06-03 21:14:01 (UTC)
MD5: 5f2bbd8dc840e00a6ef3bbfc03d229a5
http://www.virustotal.com/file-scan/report.html?id=ea34d085b888ac1f8a7c9fc230fc996fbc27f0ac0d535ae54d08346734c60989-1307135641