‘First VPN Service’ used by ransomware actors to compromise systems

The Federal Bureau of Investigation (FBI) has released a FLASH to disseminate indicators of compromise (IOCs) and identified tactics, techniques, and procedures (TTPs) associated with the First VPN Service.

The service has been active since approximately 2014 and currently provides 32 exit node servers in 27 countries. At least 25 ransomware groups, such as Avaddon Ransomware, have used First VPN Service infrastructure to perform network reconnaissance and intrusions. First VPN Service IP addresses have been used for scanning activity, botnets, denial of service attacks, scams, and hacking.

First VPN Service was almost exclusively advertised in known criminal dark web forums such as Exploit[.]in and XSS[.]is, two of the most prominent Russian-language online forums which provide marketplaces for cyber criminals to buy and sell unauthorized access to computer systems, stolen personal identifying information, hacking tools, and contraband.