Click-ad-fraud Kovter malware, packaged as a legitimate Firefox browser update, is being delivered to unsuspecting victims via drive-by-download attacks. Kovter, which also occasionally installs other malware, has been around for a few years now, and has gone through many changes that keep it a current threat.
“What makes this new variant particularly nasty is that it’s the later fileless version of Kovter, and it’s now using an apparently legitimate certificate,” Barkly researchers have discovered.
