Menu
Shodan search engine starts unmasking malware command-and-control servers

Shodan search engine starts unmasking malware command-and-control servers

The new Malware Hunter service could help companies and security vendors quickly block traffic to malware servers.

IDG

IDG

There's now a new tool that could allow companies to quickly block communications between malware programs and their frequently changing command-and-control servers.

Threat intelligence company Recorded Future has partnered with Shodan, a search engine for internet-connected devices and services, to create a new online crawler called Malware Hunter.

The new service continuously scans the internet to find control panels for over ten different remote access Trojan (RAT) programs, including Gh0st RAT, DarkComet, njRAT, ZeroAccess and XtremeRAT. These are commercial malware tools sold on underground forums and are used by cybercriminals to take complete control of compromised computers.

To identify command-and-control (C&C) servers, the Malware Hunter crawler connects to public Internet Protocol addresses and sends traffic that replicates what these Trojan programs would send to their control panels. If the receiving computers send back specific responses they're flagged as C&C servers.

Malware Hunter has identified over 5,700 RAT servers so far, with more than 4,000 of them located in the U.S. The largest number of control panels found was for Gh0st RAT, a malware program of Chinese origin that has been used in targeted cyberespionage attacks since 2009.

The C&C list generated by Malware Hunter is updated in real time, so security vendors, companies and even independent researchers can use it in firewalls and other security products to block malicious traffic.

Blocking traffic to these C&C servers at the network level could prevent attackers from abusing infected computers or stealing data. This could be quicker than waiting for security companies to discover new RAT samples, extract the command-and-control servers from their configuration and adding a blocking rule for them.

The traffic signatures used to identify RAT C&C servers is based on research by Recorded Future, which used the same technique to identify malicious servers in the past, but on a smaller scale.

The downside of crawlers masquerading as infected computers when scanning the entire internet is that it could trigger false positive alerts on people's security systems that filter incoming traffic.

"Malware Hunter doesn't perform any attacks and the requests it sends don't contain any malicious content," the service's creators said on its website. "The reason your security product raised an alert is because it is using a signature that should only be used for traffic leaving the network (egress) but is incorrectly being applied to incoming traffic (ingress)."


Follow Us

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Featured

Slideshows

Meet the leading female front runners of the Kiwi channel

Meet the leading female front runners of the Kiwi channel

Reseller News honoured the leading female front runners of the New Zealand channel at the 2018 Women in ICT Awards (WIICTA) in Auckland. The awards honoured standout individuals across seven categories, spanning Entrepreneur; Innovation; Rising Star; Shining Star; Community; Technical and Achievement.

Meet the leading female front runners of the Kiwi channel
Meet the top performing customer-centric Microsoft channel partners

Meet the top performing customer-centric Microsoft channel partners

Microsoft honoured leading partners across the channel following a year of customer innovation and market growth in New Zealand. The 2018 Microsoft Partner Awards recognised excellence within the context of the end-user, spanning a host of emerging and established providers.

Meet the top performing customer-centric Microsoft channel partners
Reseller News launches new-look Awards at 2018 Judges’ Lunch

Reseller News launches new-look Awards at 2018 Judges’ Lunch

Introducing the Reseller News Innovation Awards, launched to the channel at the 2018 Judges’ Lunch in Auckland. With more than 70 judges now part of the voting panel, the new-look awards will reflect the changing dynamics of the channel, recognising excellence across customer value and innovation - spanning start-ups, partners, distributors and vendors.

Reseller News launches new-look Awards at 2018 Judges’ Lunch
Show Comments