What would have helped is to post the MBAM log contents, as no one can comment without information.
There is also virustotal for confirmation:
Check the offending/suspect file at: VirusTotal - Multi engine on-line virus scanner and report the findings here the URL in the Address bar of the VT results page.
these are the results from the virus total..i wanted to see how many could find it so i did it
Antivirus Version Last Update Result
AhnLab-V3 2010.12.15.02 2010.12.15 -
AntiVir 7.11.0.42 2010.12.15 TR/Crypt.ZPACK.Gen2
Antiy-AVL 2.0.3.7 2010.12.15 -
Avast 4.8.1351.0 2010.12.15 -
Avast5 5.0.677.0 2010.12.15 -
AVG 9.0.0.851 2010.12.15 -
BitDefender 7.2 2010.12.15 Gen:Variant.FakeAlert.47
CAT-QuickHeal 11.00 2010.12.15 -
ClamAV 0.96.4.0 2010.12.15 -
Command 5.2.11.5 2010.12.15 -
Comodo 7070 2010.12.15 -
DrWeb 5.0.2.03300 2010.12.15 Trojan.Fakealert.19447
Emsisoft 5.1.0.1 2010.12.15 -
eTrust-Vet 36.1.8042 2010.12.15 -
F-Prot 4.6.2.117 2010.12.14 -
F-Secure 9.0.16160.0 2010.12.15 -
Fortinet 4.2.254.0 2010.12.15 -
GData 21 2010.12.15 Gen:Variant.FakeAlert.47
Ikarus T3.1.1.90.0 2010.12.15 -
Jiangmin 13.0.900 2010.12.15 -
K7AntiVirus 9.72.3246 2010.12.14 -
Kaspersky 7.0.0.125 2010.12.15 -
McAfee 5.400.0.1158 2010.12.15 -
McAfee-GW-Edition2010.1C 2010.12.15 -
Microsoft 1.6402 2010.12.15 Rogue:Win32/Winwebsec
NOD32 5705 2010.12.15 a variant of Win32/Kryptik.IXI
Norman 6.06.12 2010.12.15 -
nProtect 2010-12-15.02 2010.12.15 -
Panda 10.0.2.7 2010.12.15 -
PCTools 7.0.3.5 2010.12.15 -
Prevx 3.0 2010.12.15 High Risk Cloaked Malware
Rising 22.78.01.04 2010.12.15 -
Sophos 4.60.0 2010.12.15 -
SUPERAntiSpyware4.40.0.1006 2010.12.15 -
Symantec 20101.3.0.103 2010.12.15 -
TheHacker 6.7.0.1.101 2010.12.15 -
TrendMicro 9.120.0.1004 2010.12.15 -
TrendMicro-HouseCall9.120.0.100 2010.12.15 -
VBA32 3.12.14.2 2010.12.14 -
ViRobot 2010.12.15.4202 2010.12.15 -
VirusBuster 13.6.95.0 2010.12.15 -