Think that you have a compromised Red Hat based system?

Use RPM to search for modified binaries.

rpm -Va | grep ^..5

This one-liner will use the RPM database to compare md5sums of all installed files and will give you a report of all files that have been changed from the default install. Configuration files may not be a big deal, but binaries with md5sums that don't match is a dead give away of a compromised system.