A series of cyber attacks was conducted against the United States Office of Personnel Management (OPM) in April and June this year. The FBI’s Cyber Task Force identified several Remote Access Tools (RATs) that were used to carry out the attack. One of the more effective tools discovered is named’FF-RAT ‘. FF-Rat evades endpoint detection through stealth tactics, including the ability to download DLLs remotely and execute them in memory only. In order to mitigate these types of attacks, it is key that you have tools and methods in place for early detection.
Source: https://thehackernews.com/2015/09/stealthy-malware-cyber-attack.html