I've been going through intense program/package installation recently, so I can't tell for sure which of the newly installed programs (or old programs) caused the appearance of a core
file in my home folder. It's a server, so I better find out any possible sources of instability on the machine.
You can simply use the file
program to identify them:
E.g
# file /var/core/core
/var/core/core: ELF 64-bit MSB core file SPARCV9 Version 1, from 'crs_stat.bin'