Last week, the infrastructure of REvil (Sodinokibi) returned online after months of downtime, and now the ransomware has resumed attacks.The fact is that in July 2021, the hack group went offline without giving any reason. Then it was a question of shutting down an entire network of conventional and darknet sites that were used to negotiate a ransom, drain data stolen from victims, as well as the internal infrastructure of the ransomware.
Let me remind you that not long before this, in early July 2021, REvil operators carried out a large-scale attack on the customers of the well-known MSP solution provider Kaseya. For the attack, the hackers used 0-day vulnerabilities in the company’s product (VSA).
The problem was that most of the affected VSA servers were used by MSP providers, that is, companies that manage the infrastructure of other customers. This means that the cybercriminals have deployed the ransomware in thousands of corporate networks.
According to official figures, the compromise affected about 60 Kaseya clients, through whose infrastructure hackers were able to encrypt approximately 800-1500 corporate networks.
In addition, shortly before the attack on customers, Kaseya REvil hit the front pages of many publications as it attacked JBS, the world’s largest supplier of beef and poultry, as well as the second largest producer of pork. The company operates in the USA, Australia, Canada, Great Britain and so on, serving clients from 190 countries around the world.
Since it has long been known that REvil is a Russian-speaking hack group, US President Joe Biden in a telephone conversation called on Russian President Vladimir Putin to stop the attacks of ransomware hackers operating from the territory of the Russian Federation. Biden said that if Russia does not take action after that, the United States will be forced to take it on its own.
After shutting down the entire infrastructure of the hack group, many experts believed that the group had broken up and will now rebrand, in an attempt to confuse law enforcement agencies and information security companies in the United States. At the same time, Kaseya somehow obtained a universal key to decrypt its customers’ data. Then some suggested that Russian law enforcement officers received the decryption key from the attackers and handed it over to the FBI as a gesture of goodwill.
Now Bleeping Computer writes that until September 9 there was no evidence of new attacks and that REvil was fully resumed. However, late last week, someone uploaded a new REvil sample to VirusTotal, dated September 4th. And shortly thereafter, the hackers published screenshots of the data stolen from the new victim on their website on the darknet.
The publication also notes that in the past, a representative of the group, known under the nicknames Unknown or UNKN, published advertisements or the latest news about REvil operations on hacker forums. Now a new representative of the ransomware, who registered on these sites as REvil, returned to these publications and explained that, according to the hack group, Unknown was arrested and the group’s servers were compromised.
However, Bleeping Computer’s own sources told the media that REvil’s disappearance came as a surprise to law enforcement. For example, the publication provides a screenshot of a chat between an information security researcher and a representative of REvil, where the latter says that the ransomware operators simply took a break.
Let me also remind you that we wrote that REvil operators blackmailed Apple.