APT / THREAT GROUP
MostereRAT
2
aliases
Last seen:Mar 17, 2026
Intelligence Profile
According to Fortinet, this malware is written in Easy Programming Language (EPL), a Simplified-Chinese-based programming language designed to be beginner-friendly and easy to understand, especially for native Chinese speakers.
Threat Analysis
MostereRAT is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.
External References
Quick Facts
TypeAPT / Threat Group
Aliases2
Also Known As
win.mostere_ratMostereRAT
External Intelligence
Malpedia: win.mostere_ratResearch Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.