An investigation started by security researchers from Morphisec into a recent email phishing attack against high-profile enterprises pointed to a group that uses techniques documented by several security companies in seemingly unconnected reports over the past two months.

“During the course of the investigation, we uncovered a sophisticated fileless attack framework that appears to be connected to various recent, much-discussed attack campaigns,” Michael Gorelik, Morphisec’s vice president of research and development, said in a blog post. “Based on our findings, a single group of threat actors is responsible for many of the most sophisticated attacks on financial institutions, government organizations, and enterprises over the past few months.”

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