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
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 |