Sidebar: A Simple Rootkit Example

Tuesday, 31 January 2006, 4:23 PM EST

An important element of a kernel rootkit is its ability to hide itself and cover up what is really going on. Here's one way that some rootkits do that. When a rootkit is installed, it replaces certain system calls and utilities with its own, modified versions of those routines.

For example, to hide the existence of a file, the rootkit must intercept all system calls that can carry a file name argument, such as open(), chdir() and unlink().

By Russell Kay at Computer World

[ Read more ]




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