According to ChainCatcher, SlowMist founder Yu Xian Yu X said in a post: "Indian exchange WazirX was stolen over 230 million USD because the multi-signature of this ETH hot wallet address was hacked:

0x27fd43babfbe83a81d14665b1a6fb8030a60c9b4

It was 4/6 multi-signature before, it seems that all related private keys have been compromised.

About 3 hours ago, the attacker replaced the logic contract of the multi-signature contract with a malicious contract prepared 8 days ago through related transactions, and then carried out subsequent batch theft of coins."