Threat actors associated with the BlackCat ransomware have been observed employing malvertising tricks to distribute rogue installers of the WinSCP file transfer application. "Malicious actors used malvertising to distribute a piece of malware via cloned webpages of legitimate organizations," Trend Micro researchers said in an analysis published last week. "In this case, the distribution involved a webpage of the well-known application WinSCP, an open-source Windows application for file transfer."