I suspect account to be compromised (hacked/bought), with almost two-year posting gap. If you decide not to ban it, at least lock it for security reasons.
Original EtherCore thread and GitHub:
they don't have a thread on bitcointalk
https://github.com/ethercore (Original: ethercore, activity dates back to 2018)
Fake EtherCore thread and GitHub:
https://bitcointalksearch.org/topic/ann-ere-ethercore-secure-scalable-and-decentralized-progpowmineable-5243524
https://github.com/eithercore/ (Fake: eithercore, created 2 days ago)
http://archive.md/YDyKW
Additional information:
http://loyce.club/archive/posts/5429/54298318.html
Windows: h ps://github.com/ethercore/desktop-wallet/releases/download/v0.10.1/EtherCore.Wallet-0.10.1-win.zip
https://github.com/eithercore/desktop-wallet/releases/download/v0.10.1/EtherCore.Wallet-0.10.1-win.zip