DoubleDoor is the newest Internet of Things (IoT) botnet that allows cybercriminals to hijack devices even if the user has authentication enabled and has added a firewall for additional protection. It can do this because is using two exploits: CVE-2015–7755 – Juniper Networks SmartScreen OS exploit, and CVE-2016–10401- Zyxel modem backdoor exploit to ensure it can not only bypass authentication on targeted devices but also render additional protections useless.
DoubleDoor was found in the wild, affecting ScreenOS software running on NetScreen firewalls. It first deploys Juniper Networks exploit, which allows it to get past firewall authentication. Using this exploit the telnet and SSH daemons of Netscreen firewalls become accessible with the hardcoded password <<< %s(un=’%s’) = %u and any username. Its second move is to deploy the backdoor for ZyXEL PK5001Z devices meaning that it uses hardcoded su password: zyad5001 to obtain privilege escalation.
Using a randomized string in every attack, this botnet can also perform reconnaissance to ensure every attack was successful.
This botnet attacks IoT devices from South Korea that are used in corporate environments. Many of them don’t rely on built-in IoT authentication, and another layer of firewall protects most of the times.
Sometimes adding only one extra layer of cybersecurity it is not enough, cybercrime is evolving each day, because of this a combination of multiple cybersecurity layers is required for robust protection. This combination includes good security habits, like keeping your devices and software up-to-date, antivirus, and a secure firewall.
Regular users are the most affected by malware this day because most of them do not care about what antivirus they have installed in their systems.
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Most of the companies don't care about cybersecurity until they suffer a breach.
A healthy company must perform a penetration test from time to time. The penetration test must execute against all the assets of the company, including the workers who are the most vulnerable to the social engineering attacks.
A penetration test can be done either by a security specialist from inside of the company or by hiring an external cyber security company who can take care of everything.
Besides penetration test, a company must have a minimum healthy cybersecurity system installed like antivirus or firewall.
CyberByte company can perform various penetration tests on all the spectrum of PCI/DSS compliance to the red team, perimeter testing, and social engineering.
We also provide services to employee profiling and cyber threat monitoring, since most of the data breaches this day come from the inside of the company.
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CyberByte Antivirus comes in two flavors:
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