COLDRIVER Using New Malware To Steal Documents From Western Targets and NGOs cloud.google.com/blog/topi…

Google Threat Intelligence Group (GTIG) has identified a new piece of malware called LOSTKEYS, attributed to the Russian government-backed threat group COLDRIVER (also known as UNC4057, Star Blizzard, and Callisto). LOSTKEYS is capable of stealing files from a hard-coded list of extensions and directories, along with sending system information and running processes to the attacker. Observed in January, March, and April 2025, LOSTKEYS marks a new development in the toolset of COLDRIVER, a group primarily known for credential phishing against high-profile targets like NATO governments, non-governmental organizations (NGOs), and former intelligence and diplomatic officers. GTIG has been tracking COLDRIVER for many years, including their SPICA malware in 2024.

COLDRIVER typically targets high-profile individuals at their personal email addresses or at NGO addresses. They are known for stealing credentials and after gaining access to a target’s account they exfiltrate emails and steal contact lists from the compromised account. In select cases, COLDRIVER also delivers malware to target devices and may attempt to access files on the system.