The North Korean threat actor group known as ‘BlueNoroff’ has been spotted targeting cryptocurrency startups with malicious documents and fake MetaMask browser extensions.

The motive of this group is purely financial, but its sophistication in carrying out objectives has previously led researchers to conclude that this is a sub-group of the North Korean Lazarus gang.

Although BlueNoroff has been active for several years, its structure and operation have been shrouded by mystery.