A North Korean hacking group known as Lazarus was likely behind a recent campaign targeting organizations in 31 countries, following high-profile attacks on Bangladesh Bank, Sony and South Korea, cybersecurity firm Symantec Corp. said on Wednesday.
Symantec said in a blog post that researchers have uncovered four pieces of digital evidence suggesting the Lazarus group was behind the campaign that sought to infect victims with "loader" software used to stage attacks by installing other malicious programs.
"We are reasonably certain" Lazarus was responsible, Symantec researcher Eric Chien said.
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