Our read Paul observed malware being delivered from the ".sys" directory of various web sites. The URL follows the scheme: =.... . In response to clicking on the link, the user is asked to install the software. According to Paul, he observed the link being delivered via Facebook which of course makes the message more plausible and it is likely that users install the software thinking it came from a "Friend". Before adding a specific block for ".sys", Paul's web filter caught about 60% of these exploits. Once a user follows the link, additional exe files are downloaded from ".sys" directories. The file names Paul observed are p.exe, go.exe and v2captcha21.exe. The link for this article located at SANS is no longer available. . Understand the risks associated with ".sys" folders that distribute malicious software via misleading downloads.. Malware Delivery, Exploit Prevention, Web Filtering. . LinuxSecurity.com Team
Get the latest Linux and open source security news straight to your inbox.