Earlier this year, Trend Micro researchers discovered a new cyberespionage campaign by a hacker group we named Earth Estries. Based on their observations, Earth Estries has been active since at least 2020. The researchers also found some overlaps between the tactics, techniques, and procedures (TTPs) used by Earth Estries and those used by another advanced persistent threat (APT) group, FamousSparrow.
From a general overview of the tools and techniques used in this ongoing campaign, Trend Micro believe the threat actors behind Earth Estries are working with high-level resources and functioning with sophisticated skills and experience in cyberespionage and illicit activities.
Source: Trend Micro