Bithumb#1

#Bithumb1 • 2017-02

🇰🇷 Korea, Republic of

In February 2017, about $7 million in virtual currency was stolen from South Korean cryptocurrency exchange Bithumb. UN Panel reporting later said Bithumb was attacked by DPRK cyber actors multiple times, with the first two attacks in February and July 2017 each causing losses of about $7 million; the linked evidence for this incident does not support including the separate 30,000-user personal-data exposure here.

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Bluenoroff

Kaspersky

Bluenoroff is Kaspersky's name for a financially motivated unit within the broader Lazarus formation. Kaspersky introduced the designation publicly in 2017 while documenting bank intrusions connected to the 2016 Bangladesh Central Bank theft and other attacks on financial institutions and SWIFT-connected systems. The group used watering holes, backdoors, compromised infrastructure, and malware tailored to banking environments, with activity spanning multiple countries. By 2022, Kaspersky described a shift from banks and SWIFT servers toward cryptocurrency businesses as the group's principal source of illicit income. Operators created convincing cryptocurrency software companies and applications, delivered backdoored updates, and used malicious documents and social engineering to abuse trust. The reporting portrays Bluenoroff as able to draw on the larger formation's malware, exploits, and infrastructure while maintaining a distinct financial objective.

Lazarus Under The Hood
First seen: 2017-04 • Last seen: 2026-07

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