https://zycrypto.com/the-euler-finance-hacker-returns-almost-all-of-197-million-loot/
A few days after the hack, Euler offered to provide the hacker with 10% of the approximately $200 million stolen if the hacker would return the remainder within 24 hours.
There was no response, añd finally Euler announced a $1 million reward for information regarding the arrest of the hacker and the recovery of the funds.
And suddenly, now nearly all of the stolen funds have been returned to the cryptocurrency lending platform by the hackers.
Maybe they are white hat hackers?