what is this process? - mini forensics on unknown running pr

# www.fduran.com
# what is this process? - mini forensics on unknown running process

ls -l /proc/$pid/exe
dpkg -S /path/to/process_binary
strings /path/to/process_binary
hexdump -C /path/to/process_binary
netstat -tapn|grep tang
lsof $pid