The DHS Cybersecurity and Infrastructure Security Agency (CISA) and the Federal Bureau of Investigation have released a report on six new or upgraded malware variants being used by North Korea.
The malware types included are Bistromath, Slickshoes, Crowdedflounder, Hotcroissant, Artfulpie, Buffetline and Hoplight. Hoplight is a previously recorded malware believed to be used by the North Korean cyberespionage group Hidden Cobra. All the new malware types are also used by Hidden Cobra, according to CISA.
Bistromath, also used by Hidden Cobra, is basically a full-featured RAT implant executable and multiple versions of the CAgent11 GUI implant controller/builder. It performs simple XOR network encoding and can conducting system surveys, file upload/download, process and command execution, can listen to audio microphone, view the clipboard and the screen. The GUI controllers allow interaction with the implant as well as the option to dynamically build new implants with customized options.
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