It appears that SYNful Knock is still a matter of interest to serious computing professionals as I am getting hits referred from Google on my website searching for information on it. Cisco, via their Talos Intel group, have released a…
This is an analysis of SYNful Knock by the people who discovered it – Mandiant/FireEye. From my reading of the article, it seems that the router implant was handcrafted on a router-by-router basis. Also, the original attack seems to require…
Cisco has provided a method of determining if your router has the SYNful Knock router implant. ========================================================= http://blogs.cisco.com/security/offline-analysis-of-ios-image-integrity Cisco Blog > Security Offline Analysis of IOS Image Integrity Vafa Izadinia | February 23, 2012 at 1:01 pm PST Forensic…
This is Cisco’s offical response to SYNful Knock. ============================================== https://blogs.cisco.com/security/synful-knock Cisco Blog > Security SYNful Knock: Detecting and Mitigating Cisco IOS Software Attacks Omar Santos | September 15, 2015 at 12:06 am PST Historically, threat actors have targeted network devices…
A bit more about the Cisco router break-in. It seems that the rogue software has been found in routers in Ukraine, Phillipines, Mexico and India. ===================================================================== http://www.firstpost.com/business/synful-knock-cisco-routers-in-india-vulnerable-to-cyber-attacks-2434654.html Mandiant, a FireEye company, has discovered the next evolution in persistence currently being…
Cisco routers are reported to have been broken into. The Reuters report is an interesting read. It should be noted that Cisco says the break ins were not because of vunerabilities in the Cisco IOS. It appears that either admin…