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Bobkberg | Jun 4 2008 2:40PM GMT
I’d add two more things in addition to KevinBeaver’s suggestion.
1) Check out the (former) SysInternals RootKitRevealer (http://technet.microsoft.com/en-us/sysinternals/default.aspx). This will go through the system and compare the files that the Windows API presents as visible vs. what can be found in the file system itself.
2) Open a command prompt, navigate to the same directory and see what a DIR command produces. In at least the case of the “Downloaded Program Files” and “Downloaded Installations” I’ve found significant differences, especially when looking for malware.
As with many other practitioners, I do most malware cleanup with the hard disk under test being physically mounted on a “cleanup” system so that any malware - especially the more sophisticated ones - does not get a chance to be loaded with the O/S.
Bob