Morally unwholesome deeds knowing the consequences but without unwholesome intentions
I think the doctrine says there are three unwholesome roots: i.e. passion, aversion -- and ignorance (or delusion).

It's also possible to do things accidentally -- but that's not what you're asking about.

See also e.g. this answer about lying -- but maybe that's not without passion, nor considered "objectively immoral", nor without consequences.

It's hard for me to imagine another case, other than these.


I think you're trying to talk about a "dispassionate killer" -- I guess killers can appear to be dispassionate, but I'm not sure a killer (a real person) can be actually dispassionate except in fiction, though perhaps practised at controlling their emotions.
Another case might be a "sociopath" -- maybe they act for a reason of their own though, e.g. passion rather than aversion. Or a psychosis -- misunderstanding reality. I'm not really equipped to judge that.
I'm not sure about animals. I think they're understood as being passionate, but perhaps unreasoning. I'm not sure that the "lower" animals have a theory of mind which allows them to see others as "sentient beings" (and immoral to harm them), instead of simply moving objects (which might be killed for food).


This isn't a very good answer -- not based on much personal experience nor references.

I think that's because I tried to map the question -- "is it even possible?" -- to the doctrine, and didn't really succeed very well. So I think the answer might be: "in general, no".