ScarCruft's Evolving Arsenal: Researchers Reveal New Malware Distribution Techniques
Mar 22, 2023
Cyber Threat Intelligence
The North Korean advanced persistent threat (APT) actor dubbed ScarCruft is using weaponized Microsoft Compiled HTML Help (CHM) files to download additional malware onto targeted machines. According to multiple reports from AhnLab Security Emergency response Center ( ASEC ), SEKOIA.IO , and Zscaler , the development is illustrative of the group's continuous efforts to refine and retool its tactics to sidestep detection. "The group is constantly evolving its tools, techniques, and procedures while experimenting with new file formats and methods to bypass security vendors," Zscaler researchers Sudeep Singh and Naveen Selvan said in a new analysis published Tuesday. ScarCruft, also tracked under the names APT37, Reaper, RedEyes, and Ricochet Chollima, has exhibited an increased operational tempo since the start of the year, targeting various South Korean entities for espionage purposes. It is known to be active since at least 2012. Last month, ASEC disclosed a