APT / THREAT GROUP
Buer
4
aliases
Last seen:Mar 17, 2026
Intelligence Profile
Buer is a downloader sold on underground forums and used by threat actors to deliver payload malware onto target machines. It has been observed in email campaigns and has been sold as a service since August 2019.
Threat Analysis
Buer 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
Aliases4
Also Known As
win.buerBuerRustyBuerBuerloader
External Intelligence
Malpedia: win.buerResearch Links
Data sourced from Malpedia, Ransomware.live, RansomLook, and CTIWATCH OSINT collection. Actor attribution is based on available intelligence and may be incomplete.