This is the finesse binary from the end of the "fortress" VM challenge produced by NCC
On the system, the binary has the following perms:
-r-sr-xr-x 1 root root 7416 Jul 20 11:05 finesse
finesse: setuid ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=2bc2ddaf794d1f3aca7ffdb7e10f5c201b49319f, not stripped