I can't read Russian. But I'm sure you at least checked the file hash of the file you downloaded from the official site, yes?
Fuck!, hash checksums do not match. What's going on ?!
I downloaded it from
https://electrum-ltc.org/Standalone exec for Win checks out. sha256sum matches as well as pgp signature.
Edit: setup.exe for Win checks out. sha256sum and signature match
Edit2: portable for Win checks out as well (again sha256sum and pgp sig)