ESET researchers have published report Dolphin, backdoor malware identified in April 2021. North Korean advanced persistent threat APT group ScarCruft APT37 or Reaper has been utilizing malware for a year and often in conjunction with the backdoor BLUELIGHT malware technology.
A malware that scans victim's mobile phone to steal data has been discovered on Windows. Security researchers have discovered a backdoor called Dolphin, which has been used by North Korean hackers in crimes for years now.