February 05, 2023

North Korean hackers likely used new vulnerability to breach ROK defense firm

Researchers link attacks against South Korean aerospace and nuclear research sectors to DPRK, warn of further breaches 

After a series of hacks against South Korea’s nuclear research and defense sectors, the cybersecurity firm TeamT5 said a group linked to North Korea likely used a previously unknown vulnerability and new malicious tools to break into the highly sensitive systems.

According to a report published on Wednesday, researchers said they believe a group labelled “CloudDragon” used a so-called zero-day exploit called MemzipRAT to install a backdoor and gain access to the organizations’ networks. The experts consider CloudDragon to be one of two sub-groups commonly referred to as Kimsuky, which has long been suspected of working on behalf of the DPRK.