It’s that time of the year! The moment when we look back, and reflect on Webroot’s Threat Blog most popular content for 2012. Which are this year’s most popular posts? What distinguished them from the rest of the analyses published on a daily basis, throughout the entire year? Let’s find out.
Posts Categorized: Ad-clickers
By Marco Giuliani The latest generation of a rapidly evolving family of kernel-mode rootkits called, variously, ZeroAccess or Max++, seems to get more powerful and effective with each new variant. The rootkit infects a random system driver, overwriting its code with its own, infected driver, and hijacks the storage driver chain in order to hide its presence on the disk. But its own self-protection mechanism is its most interesting characteristic: It lays a virtual tripwire. I’ve written about this rootkit in a few recent blog posts and in a white paper. On an infected computer, this new driver sets up […]
When malware ends up on an infected machine, one of the first things it will do is to ensure that it will start up again after the victim reboots their computer. For a criminal it makes sense. After all, what good is malware that stops working after a reboot? In Windows, there are tons of ways for malware to accomplish this small but critical task, most of which involve the Registry. Technical folks call the Registry keys that are used for this purpose load points or auto-start locations. There’s even a pretty good free app from Microsoft that will show […]
A complex and elaborately conceived family of malware that originates in China installs the Apache Web server, as well as half a dozen keylogger and downloader payloads, disguised as components of legitimate apps. We and a few other antivirus vendors are calling this type of malware Taobatuo. It just so happens that I’ve been setting up a Windows virtual machine with the latest versions of Apache, MySQL, and PHP for an unrelated project. I hadn’t installed these apps onto a Windows box before, and Apache in particular is notoriously finicky about Windows installations, so after several days of trial and […]
In the world of first-person shooter games, getting the most headshots – hits on the opponent which instantly take the opponent’s avatar out of the game — is a prized goal. The headshot is the quickest way to dispatch a foe in virtually every shooter, which is why the file name of a malware sample, currently in circulation, stood out. The file, yogetheadshot.php.exe (VT), is a dropper, a glorified bucket designed to tip over and spill other malware all over a PC. But where other droppers might leave behind a handful of payloads, this one utterly decimated a testbed PC […]