Research from Avast has been published detailing the operation of the XOR.DDoS trojan, designed to infect Linux systems. Will 2015 be the year of DDOS Extortion?

As the name suggests, the purpose of the trojan is to support a DDOS (Distributed Denial of Service) network. DDOS is still one of the most difficult attacks to defend against - by definition, the attack is perpetrated simultaneously from large numbers of devices including home and business users wherever the trojan has been deployed. This makes the standard countermeasure for DDOS - blocking/blacklisting associated IP addresses - extremely hard.

During the Christmas holidays we saw how devastatingly effective DDOS attacks can be - both Microsoft XBOX Live and Sony PlayStation servers were crippled by a prolonged DDOS attack from the Lizard Squad hacking group. The Lizard Squad have now claimed that these attacks were simply a 'marketing campaign' to demonstrate their capabilities, and that their DDOS service is now available for hire. DDOS attacks have been used to extort ransoms in the past, with Vimeo, Shutterstock, MailChimp and all being subject to DDOS coercion.

Defending against malware like the XOR.DDoS trojan requires a layered approach. The increased use of zero-day malware makes anti-virus systems less effective and therefore system hardening measures need to be used to stop or disrupt the deployment of the trojan and its rootkit. Real-time file integrity monitoring is also essential to at least detect breach activity if an infection succeeds, so allowing remediation work to take place before a more widespread infection took hold and inflicted damage.

Links to sources quoted are below:

Linux DDoS Trojan hiding itself with an embedded rootkit

Lizard Squad's Xbox Live, PSN attacks were a 'marketing scheme' for new DDoS service

Tally of Cyber Extortion Attacks on Tech Companies Grows

The Most Powerful & Reliable Cybersecurity Products
Contact Us

USA Offices

New Net Technologies LLC
4850 Tamiami Trail, Suite 301
Naples, Florida, 34103

New Net Technologies LLC
1175 Peachtree St NE
Atlanta, Georgia, 30361.

Tel: (844) 898-8358
[email protected]


UK Office

New Net Technologies Ltd
The Russell Building, West Common
Harpenden, Hertfordshire

Tel: 020 3917 4995
 [email protected]

SC Magazine Cybersecurity 500 CSGEA Winners 2021 CIS benchmarking SEWP Sans Institute Now Certified IBM Security
Copyright 2021, New Net Technologies LLC. All rights reserved. 
NNT and Change Tracker are registered trademarks of New Net Technologies LLC.
All other product, company names and trademarks are the property of their respective owners.