Post Mortem of KlaySwap Incident through BGP Hijacking

2022-02-15 S2W

https://medium.com/s2wblog/post-mortem-of-klayswap-incident-through-bgp-hijacking-898f26727d66

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S2W analyzed the KlaySwap incident as a BGP hijacking operation that redirected traffic for Kakao SDK delivery paths toward attacker-controlled infrastructure. The attacker issued a ZeroSSL certificate for developers.kakao.com, served a malicious kakao.min.js only to users arriving from KlaySwap, and modified wallet and contract logic so token operations sent assets to attacker-controlled accounts and factory contracts. The routing manipulation began before the first abnormal transaction on February 3, 2022, and affected Kakao SDK-dependent services while KlaySwap users continued generating theft transactions until 18:01 KST. Blockchain tracing in the excerpt links the stolen assets to swaps through KLAY-based tokens and transfers to FixedFloat, with confirmed attacker wallets and contract addresses documented.

Indicators of Compromise

Type Value First Seen Last Seen
URL https://www.packetlabs.net/post… 2022-02-15 2022-02-15
DOMAIN darkode.com 2022-02-15 2022-02-15

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