Not sure why hijackthis is showing it but try this it may be hidden:

How to see hidden files in Windows Vista

Re-hide when you are done looking, if you can't still find it I wouldn't worry about it, probably something in hijackthis causeing it to still show.

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MALWARE: READ FIRST Procedures:
|_ SpyBot V1.5 _|_ HijackThis Log __V2.0.2 _|



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