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North Korea-affiliated hackers may have scaled back their operations in the second half of 2024 while preparing for what became the largest crypto hack in history.
The crypto industry was rocked by the enormous hack on Feb. 21 when Bybit lost over $1.4 billion to the infamous North Korean Lazarus Group, which seems to have prepared the attack months in advance.
According to blockchain analytics firm Chainalysis, illicit activity tied to North Korean cyber actors sharply declined after July 1, 2024, despite a surge in attacks earlier that year.
The slowdown in crypto hacks by North Korean agents had raised significant red flags, according to Eric Jardine, Chainalysis cybercrimes research Lead.
North Korea’s slowdown “started when Russia and DPRK [North Korea] met for their summit that led to a reallocation of North Korean resources, including military personnel to the war in Ukraine,” Jardine told Cointelegraph during the Chainreaction show on March 26, adding:
“The slowdown that we observed could have been a regrouping to select new targets, probe infrastructure, or it could have been linked to those geopolitical events,” he added.
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It took the Lazarus Group 10 days to launder 100% of the stolen Bybit funds through the decentralized crosschain protocol THORChain, Cointelegraph reported on March 4.
Still, blockchain security experts were hopeful that a portion of the funds could be frozen and recovered by Bybit. As of March 20, over 80% of the stolen $1.4 billion was still traceable as blockchain investigators continue their efforts to freeze and recover the funds.
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How hackers staged the world’s biggest crypto hack
The Bybit attack highlights that even centralized exchanges with strong security measures remain vulnerable to sophisticated cyberattacks, analysts said.
The attack shares similarities with the $230 million WazirX hack and the $58 million Radiant Capital hack, according to Meir Dolev, co-founder and chief technical officer at Cyvers.
Dolev said the Ethereum multisig cold wallet was compromised through a deceptive transaction, tricking signers into unknowingly approving a malicious smart contract logic change.
“This allowed the hacker to gain control of the cold wallet and transfer all ETH to an unknown address,” Dolev told Cointelegraph.
North Korea hacking activity. Source: Chainalysis
Throughout 2024, North Korean hackers stole over $1.34 billion worth of digital assets across 47 incidents, a 102% increase from the $660 million stolen in 2023, according to Chainalysis data.
This accounted for 61% of the total crypto stolen in 2024.
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