This is the built-in Vault application in Russian. Check that you have installed the latest Vault app on your phone and have chosen the Russian language by default.
 
Now you can hide contacts, images, videos, SMS for free! Keep text messages, photos, and videos safe.

Vault app will allow you to create your own password-protected storage in Android , where you can encrypt and save personal contacts, SMS messages, call logs, and hide your photos and videos.
 
Vault app includes features:
Hide personal contacts and SMS messages
Hide photos and videos
App Lock
Private Browser
Tracking unauthorized access (PRO)
Vault Interactive Storage (PRO)
Invisible Mode (PRO)

Full support for Android Oreo (8.0)