1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Attackers install highly persistent malware implants on Cisco routers

Discussion in 'Network World' started by RSS, Sep 15, 2015.

  1. RSS

    RSS New Member Member

    Replacing router firmware with poisoned versions is no longer just a theoretical risk. Researchers from Mandiant have detected a real-world attack that has installed rogue firmware on business routers in four countries.

    The router implant, dubbed SYNful Knock, provides attackers with highly privileged backdoor access to the affected devices and persists even across reboots. This is different than the typical malware found on consumer routers, which gets wiped from memory when the device is restarted.

    SYNful Knock is a modification of the IOS operating system that runs on professional routers and switches made by Cisco Systems. So far it was found by Mandiant researchers on Cisco 1841, 8211 and 3825 "integrated services routers," which are typically used by businesses in their branch offices or by providers of managed network services.

    To read this article in full or to leave a comment, please click here

    Continue reading...

Share This Page