A vampire revenant in Russia is called an Upyr or Oupyr. This vampire is created when a heretic, sorcerer or witch dies.
It can also be created when a werewolf and witch have a baby.
The Upyr looks like a normal person. It’s active during the hours of noon to midnight. It attacks people in their own homes, killing the children first, then the parents.
It drains his victims of blood, then using iron like teeth it chews into the chest to eat the heart. Its teeth are its greatest asset and it uses them to gnaw through the frozen ground during the winter to escape its own grave.
Destroying this creature is difficult. The only way to find its grave is to attach a string to the Upyr’s clothing when it flees from an attack. –Easier said than done- Follow the string to the grave.
Soak the ground –all of it completely- With holy water. The Upyr must be staked through the heart to keep it in its grave. –It must be done in one blow or the creature will rise again.
Another way is to decapitate it and burn the corpse to ashes.