Hidden Cobra bites back


27 Nov 2017

Hidden Cobra bites back

The FBI and US Homeland Security have issued an alert about a new strain of malware infecting American corporate systems and stealing sensitive data.

The remote access trojan (RAT), dubbed Fallchill, is the work of a North Korean hacking group called Hidden Cobra, which some at the US Computer Emergency Readiness Team (US CERT) believe was responsible for the WannaCry ransomware outbreak earlier this year.

Hidden Cobra actors have likely been using Fallchill malware since 2016 to target the aerospace, telecommunications, and finance industries. The malware is a fully functional RAT with multiple commands that the actors can issue from a command and control server to a victim’s system. The malware typically infects a system as a file dropped by other North Korean malware or as a file unknowingly downloaded from a compromised site. It collects basic information such as the details of the operating system being used by the victim, and it allows for remote operations including searching, reading, writing and movement of files, as well as the ability to upgrade itself with new capabilities.

Businesses are being urged to remove Fallchill as “the highest priority.”  A published a list of IP addresses of public-facing machines infected by the software is available via the alert here or direct from the US-CERT website

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