Kaspersky Securelist
APT trends report Q3 2020 (DPRK-related paragraph 2) · 2020-11-03
In April, we discovered a new malware strain that we named CRAT, based on the build path and internal file name. The malware was spread using a weaponized Hangul document as well as a Trojanized application and strategic web compromise. Since its discovery the full-featured backdoor has quickly evolved, diversifying into several components. A downloader delivers CRAT to profile victims, followed by next-stage orchestrator malware named SecondCrat: this orchestrator loads various plugins for espionage, including keylogging, screen capturing and clipboard stealing. During our investigation, we found several weak connections with ScarCruft and Lazarus: we discovered that several debugging messages inside the malware have similar patterns to ScarCruft malware, as well as some code patterns and the naming of the Lazarus C2 infrastructure.