Mass Infection via SQL Injection of IIS Websites

Multiple security outlets have released reports regarding a mass SQL injection attack that has compromised a large number of public websites - Google search results currently show that over 100,000 pages have been infected. This attack targets Microsoft IIS servers running both ASP and MSSQL. The automated injection routine appears to leverage a vulnerability in a widely installed third party advertisement management script. The payload used in this attack injects a script onto websites which will then redirect visitors to a malicious domain. The malicious domain then tries to exploit client-side vulnerabilities in an attempt to install malware on unsuspecting site visitors. If you are hosting your website using Microsoft IIS, check out the SANS Internet Storm Center for additional information: https://isc.sans.edu/diary/Mass+Infection+of+IISASP+Sites/8935 At the time of this writing, the malicious domain is no longer hosting malware even though the injected links still remain on the affected sites. However during exploitation, one of the malware samples collected would attempt to place a file at “c:c.exe”. Upon execution by the exploit, this file would in-turn download additional malicious components onto the victim's machine completely compromising its integrity. Attacks like this highlight the growing importance of vulnerability management, particularly for web servers. It also calls to attention the need to not only evaluate and protect your site content, but also any third party components or scripts you may be using. Our recommendations: