Activity monitor - system process icon

[hgfjhbvytjdnb]

Hello all, I'm trying to identify what's the meaning of the white cube-like icon visible against some processes in the Activity Monitor. See example below (not mine). In this screenshot it appears against processes linked to Safari, but I have it against other processes too.
It looks like it's got something to do with virtualisation/protection perhaps?

 

[casperes1996]

Doesn't have a designated meaning per se. It's just "Package".

 

[hgfjhbvytjdnb]

Thanks!