Opal Sleet is a North Korea-linked cyber espionage group targeting education and cryptocurrency sectors.
Analyst brief
Opal Sleet (also known as Osmium, Konni, Vedalia) is a North Korea-linked cyber espionage group active since 2012. They primarily target the education, government, business, and cryptocurrency sectors. Key TTPs include the use of KonniRAT malware and the exploitation of vulnerabilities such as CVE-2023-38831. Defenders should focus on timely patching of exploited vulnerabilities and enhance monitoring for suspicious macro documents and anomalous network connections.
Opal Sleet
OSMIUMKonniVedalia
unknown
Konni is a threat actor associated with APT37, a North Korean cyber crime group. They have been active since 2012 and are known for their cyber-espionage activities. Konni has targeted various sectors, including education, government, business organizations, and the cryptocurrency industry. They have exploited vulnerabilities such as CVE-2023-38831 and have used malware like KonniRAT to gain control of victim hosts and steal important information.