Question

Why would a clever malicious program install itself as a filesystem filter?

a.

To present the antivirus program with fake versions of the files on disk

b.

To hide the fact that it has infected numerous files on the hard drive from the antivirus program

c.

Both a and b

d.

None of the above

Posted under Reverse Engineering

Answer: (c).Both a and b Explanation:A clever malicious program could install itself as a filesystem filter to intercept the antivirus program’s file system calls and present it with fake versions of the files on disk, thus hiding the fact that it has infected numerous files on the hard drive from the antivirus program.

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