The group lied, and may still be lying now.
Logo for Epic Games.

The so-called Mogilevich ransomware group who claims to have hacked Epic Games out of 189GB, now admits that they made it all up. They lied. They never hacked into Epic Games and apparently aren't even a ransomware group, but rather "professional fraudsters." They lied about databases listed in a blog they put up in order to "build meticulously our new trafficking of victims to scam."

A spokesperson for Mogilevich, named Pongo, issued a statement to Cyber Daily about the entire fabrication.

You may be wondering why all this, and now I’m going to explain everything you need. In reality, we are not a ransomware-as-a-service, but professional fraudsters.

None of the databases listed in our blog were as true as you might have discovered recently. We took advantage of big names to gain visibility as quickly as possible, but not to fame [sic] and receive approval, but to build meticulously our new trafficking of victims to scam.​
What this means is that the group were scamming people who were interested in their so-called "services." According to Cyber Daily, the group "sold its fake ransomware infrastructure to eight would-be hackers." As part of this scam, they asked potential buyers for screenshots of crypto wallets to make sure the buyers were serious. Mogilevich then used those supplied screenshots to interested hackers as "proof" that they had access to hacked crypto wallets, which netted them more money from future buyers.

At one point Mogilevich said that they accessed the network of the drone maker DJI. Though this was a lie, they still managed to trick a buyer out of $85,000.

The price for the alleged one-terabyte database was one hundred thousand dollars. We were immediately contacted by interested people, one of them was put at ease, as if he were the boss at the time,“ Pongo said, adding that the gang was able to convince this buyer that even a small leak of the data would be damaging, which was why no evidence was being shared.

We made him believe that we had other buyers who were pressing us and that they wanted the projects as soon as possible.

Now the real question is? Why confess all this when we could just run away? This was done to illustrate the process of our scam,” Pongo said. “We don’t think of ourselves as hackers but rather as criminal geniuses, if you can call us that.​
Given that it's obvious they lied about the Epic Games hack, there is no reason to even believe any of Mogilevich's latest statements now. They may be scamming would-be hackers. They may not. They may be "professional fraudsters" or they may just be serial liars. Whatever the case may be, this seems to be the conclusion to the very short-lived story about Epic Games being hacked.