Hackers that took down the Las Vegas Sands's websites earlier this year, allegedly in retaliation for the casino CEO Sheldon Adelson's vocal and vehement advocacy of using nuclear weapons on Iran, used wiper malware to do their dirty work, according to new details made public in Bloomberg Businessweek.

The attackers managed to plant the malware that shuttered the Sands websites for more than a week and deleted some data by exploiting a vulnerability in the chain's Bethlehem, Pa., web development server and then scraping login credentials to make their way to the company's main system. The attack mirrored the one experienced by Sony in December. 

The Businessweek report noted that Sands didn't know that the would-be hackers began tooling around in its networks just a month after Adelson made his remarks at Yeshiva University in New York City.