- ScarCruft, also known as APT37 or Reaper, is a North Korean espionage group targeting government, military organizations, and companies in Asia.
- BirdCall is a Windows backdoor attributed to ScarCruft, with spying capabilities such as taking screenshots and logging keystrokes.
- The Android version of BirdCall collects contacts, SMS messages, call logs, and media files, and was actively developed over several months.
- The BirdCall backdoor was discovered in a trojanized card game on a gaming platform tailored for ethnic Koreans living in Yanbian, China.
- The attack was likely aimed at collecting information on individuals from the Yanbian region deemed of interest to the North Korean regime, such as refugees or defectors.