HOMETHREATSProton RAT
APT / THREAT GROUP🕵️ ESPIONAGEADVANCED

Proton RAT

3
aliases
Last seen:Mar 17, 2026

Intelligence Profile

Proton RAT is a Remote Access Trojan (RAT) specifically designed for macOS systems. It is known for providing attackers with complete remote control over the infected system, allowing the execution of commands, keystroke capturing, access to the camera and microphone, and the ability to steal credentials stored in browsers and other password managers. This malware typically spreads through malicious or modified applications, which, when downloaded and installed by unsuspecting users, trigger its payload. Proton RAT is notorious for its sophistication and evasion capabilities, including techniques to bypass detection by installed security solutions.

Threat Analysis

Proton RAT is a advanced-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of espionage.

The group's espionage-oriented operations suggest a state-sponsored or state-aligned mandate, typically focused on stealing intellectual property, government secrets, or military intelligence. Targets are usually selected for strategic value rather than financial gain.

Classified as an advanced threat actor, Proton RAT likely develops or acquires zero-day exploits, employs custom malware toolchains, and demonstrates long-term persistence capabilities — hallmarks of a well-resourced operation consistent with nation-state backing.

External References

Quick Facts

TypeAPT / Threat Group
Motivation🕵️ espionage
Sophisticationadvanced
Aliases3

Also Known As

Calistoosx.proton_ratProton RAT

External Intelligence

Malpedia: osx.proton_rat

Research Links

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.
Proton RAT — APT / Threat Group | Threat Intelligence | CTIWATCH.COM