APT / THREAT GROUP

Remcos

aliases

Last seen:Mar 17, 2026

Intelligence Profile

Remcos (acronym of Remote Control & Surveillance Software) is a commercial Remote Access Tool to remotely control computers.

Remcos is advertised as legitimate software which can be used for surveillance and penetration testing purposes, but has been used in numerous hacking campaigns.

Remcos, once installed, opens a backdoor on the computer, granting full access to the remote user.

Remcos is developed by the cybersecurity company BreakingSecurity.

Threat Analysis

Remcos is a known-sophistication threat actor of undetermined national origin, engaged in cyber operations with a primary motivation of unknown activity patterns.

Intelligence Reports Mentioning Remcos

From a VHDX File to a Remcos RAT, (Tue, Jun 16th)

SANS ISC· Jun 16, 2026

SmartApeSG campaign pushes Remcos RAT, NetSupport RAT, StealC, and Sectop RAT (ArechClient2), (Wed, Mar 25th)

SANS ISC· Mar 24, 2026

SmartApeSG campaign uses ClickFix page to push Remcos RAT, (Sat, Mar 14th)

SANS ISC· Mar 13, 2026

External References

→http://malware-traffic-analysis.net/2017/12/22/index.html

→https://0xmrmagnezi.github.io/malware%20analysis/RemcosRAT/

→https://any.run/cybersecurity-blog/phishing-google-drive-remcos/

→https://asec.ahnlab.com/en/32376/

→https://asec.ahnlab.com/ko/25837/

Quick Facts

TypeAPT / Threat Group

Aliases5

Also Known As

win.remcosRemcosRATRemvioRemcosSocmer

External Intelligence

Malpedia: win.remcos

Research Links

MITRE ATT&CK VirusTotal Google (news) Twitter/X search

Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.

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