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Defending Against Malicious Domain Names

Cybercriminals are always waging a cat-and-mouse game with risk research workers. Across the world, cybercriminals quickly create malicious domain names as a foundation for starting cyber attacks against organisations’ Domain Name System (DNS) infrastructure.

During this putting period, there’s a substantial increase in the amount of malicious domain names related to malware and exploit kits, the Infoblox DNS Risk Index monitors the development of which.

In the second picking period, the attackers begin stealing information, reaping the benefit of the malicious domain names they’ve created by starting strikes, and usually causing damage to their victims. The variety of malicious domain names will dip during this second period, but lately the trend has changed.

While it’s too early to judge it may suggest that we’ve entered a fresh period of continual and coincident planting and picking attempts, taking us into unknown land.

It seems that exploit kits have really cemented their place as a popular goal for those creating domain names that are malicious.

Exploit kits usually make the most of security holes or vulnerabilities in browsers, operating systems, and popular applications like Adobe and Java Flash. Users are subsequently exposed to the kits (and their payloads) either via junk or malvertising on endangered sites.

That payload is subsequently capable to work behind the business’s or service provider’s firewalls when an exploit kit is successful in delivering its payload onto a casualty’s apparatus. Quite often, this communication between the and server C&C the infected device necessitates the use of DNS.

Exploit kits, along with management and command phishing, malware and other hazards, use DNS as their backbone to reach their final goals, whether that’s information exfiltration or mass malware infection. Therefore it is vital that organisations establish security into their DNS infrastructure and share risk intelligence between security and network options to efficiently mitigate these risks.

Deploying powerful internal DNS security options can help protect against malware and complex constant hazards (APTs) working DNS and prevent the exfiltration of information using this vector, all without needing to alter an organisation’s network architecture. Using a risk intelligence web feed, kept up to date of known destinations that are malicious, an internal DNS security option prevent DNS assaults, whether they be cache poisoning and can track for, find, or DNS tunnelling.

This effectively blocks the risk by interrupting communicating with its outside C&C servers and other botnets.

The internal option should additionally have the capacity to find and prevent information exfiltration via DNS tunnelling. Creating thresholds that are query, the option will have the ability to find any substantial UDP/TCP queries and answers, particularly those duplicated within a particular timeframe, to impede DNS tunnelling efforts. Link subsequently additionally cuts with any , servers C&C preventing them from exfiltrating information using conventional network protocols, whilst reducing from breeding in the network at the same time. malware infections and preventing

DNS is overly vital a part of network architecture to be left vulnerable. By taking back control of the DNS, organisation can transform it into a great security strength from a network susceptibility.

 

by admin on May 9th, 2016 in DNS

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