Chkrootkit v0.39a locally checks for signs of a rootkit. Chkrootkit includes ifpromisc.c to check and see if the interface is in promisc mode, chklastlog.c to check lastlog for deletions, and chkwtmp.c to check wtmp for deletions, strings.c for quick and dirty strings replacement, check_wtmpx.c to check for wtmpx deletions and the files chkproc.c and chkdirs.c to check for LKM trojans. Tested on Linux 2.0.x, 2.2.x and 2.4.x, FreeBSD 2.2.x, 3.x and 4.x, OpenBSD 2.6, 2.7, 2.8, 2.9, 3.0 and 3.1, NetBSD 1.5.2 and Solaris 2.5.1, 2.6 and 8.0.
You can download it from the following link: https://packetstormsecurity.com/files/download/30768/chkrootkit-0.39a.tar.gz
Source: https://packetstormsecurity.com/files/30768/chkrootkit-0.39a.tar.gz.html