Mark Lechtik

Senior Security Researcher at Kaspersky`s GReAT

Mark Lechtik is a Senior Security Researcher at Kaspersky`s GReAT, based in Israel. He is mainly engaged with malware analysis and threat intelligence. Formerly, Mark reverse engineered a bunch of North Korean anti-viruses, and spoke about it in a few conferences. Today he is mostly engaged with breaking down malware and understanding the nitty gritty of APT campaigns.

Publications

Reports

Kimsuky’s GoldDragon cluster and its C2 operations

Kimsuky (also known as Thallium, Black Banshee and Velvet Chollima) is a prolific and active threat actor primarily targeting Korea-related entities. In early 2022, we observed this group was attacking the media and a think-tank in South Korea.

Andariel deploys DTrack and Maui ransomware

Earlier, the CISA published an alert related to a Stairwell report, “Maui Ransomware.” Our data should openly help solidify the attribution of the Maui ransomware incident to the Korean-speaking APT Andariel, also known as Silent Chollima and Stonefly.

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