The message is a repeat of most of the others on here. It comes from a spoofed address registered in WA State, USA. The IP address, is in Moscow. Indeed, the wording of the threat contains nuances typical to a Russian tongue. The registrars Whois creds dont list any proxies, but the Traceroute query seems to go several levels deeper than the last shown IP address.
The extortionist claims to have my username/address, which indeed is a valid claim, but 8-10 years overdue. In my case its an old combo from the days before I started using 1Password. In this case, the LastFM site is the likely source where my combo was lifted. Their database was compromised & the contents eventually published as part of the infamous Anti Public Combo List (see: <https://haveibeenpwned.com/>_x000D_
Sun, 21 Oct 2018_x000D_
Good day, my victim._x000D_
I know your password - xxxxxxxxx_x000D_
That is my last warning._x000D_
I write you inasmuch as I put a trojan online page with pornography..._x000D_