Qi Anxin Threat Intelligence Center once published the article named "Operation Magichm: A Brief Talk on the Manlinghua Organization's CHM File Delivery and Follow-up Operations" in 2021 . In addition to the new attack methods and samples used in the latest attack in April, the linked article will also provide an overview of the recent phishing activities of the Maya Elephant (APT-Q-41) and the basics of the Diamondback (APT-Q-39) this year.