It's dressed up as an extortion attempt. But as you suspect, it is
likely that the attached file is booby trapped, to finish the takeover
job.
Windows has nothing to do with it. I'm on a Mac.
I've gotten three extortion emails over the last few months, but none
with an attachement. In all three cases, the email subject was a
long-expired COMCAST email password of mine.
Looking in my records, a few years ago COMCAST sent an email to all
subscribers that their email address had been compromised, and please
change it. Which I did, and nothing bad ever happened.
The password has been changed a few times since then. One time when I
got an annoying sales email from Norton saying my email credentials
had been found on the dark web (with some kind of link to which one
gave an email address), so please subscribe, but never making the key
suggestion, that I immediately change my credentials. Which I did,
never mind if Norton is or is not correct. But I didn't subscribe
either.
Anyway, reading the three extortion emails (all of which were composed
from a common script but differ in both details and command of
English, and claim to come from different people), one could see that
despite all the claims that my computer was compeletly compromised,
they actually had only that expired password, and were fishing. They
each asked for US $2000 and $3000 via bitcoin to go away.
What I think happened is that the data stolen when COMCAST was
penetrated a few years ago has been sold to multiple criminals on the
dark web. Or, one very persistent criminal. But, given the differing
approaches and levels of English, I think it's three people.
The emails made various accusations, but actualy had no details. What
they appear to be doing is to spam these extortion emails out to a
very large list, secure in the probability that someone is guilty of
at least some of them, and when one gets a live one on the fishhook,
it's the gift that keeps on giving.
Anyway, I did not and will not respond in any way.
Joe Gwinn