Tweet by @bankableInsight (3,639 retweets, 1,662 favorites), reported by the NZ Herald:
This is a Russian priest sprinkling holy water on the central bank's servers in an attempt to stop the fall of ruble.
Are Russia's central bank's servers being sprinkled with holy water by a Russian priest in this photo?
This tweet says that the photo is from 2013 or earlier, but doesn't indicate what the photo is of.