VERY IMPORTANT

HTTP File Server, commonly abbreviated as HFS, is a free and simple means to send and receive files across the Internet. This also makes the software a popular choice among malicious actors for hosting and distributing malware and exploits, and an interesting target for malware researchers. An investigation into an HFS instance hosting an exploit for CVE-2018-8174 led to the discovery of an interesting threat actor and their infrastructure, the continued use of the Gh0st RAT malware, and many common attributes we can use to help us identify this malicious activity in the wild.