Trojan built to disable cloud antivirus

Powered by SC Magazine
 

Crafty Chinese malware writers.

Microsoft has discovered a Trojan that aims to sever the connection between a device and the cloud antivirus (AV) service that is meant to protect it.

The Bohu Trojan, which targets Windows machines, contains three main functions: evade detection, install a filter that blocks traffic between the device and service provider, and prevent the local installation from uploading data to the server.

The attack appears to aim to knock out the additional layer of security that many antivirus companies have added to bolster defences and reduce the processing burden of ever-expanding signature databases.

"Cloud-based virus detection generally works by client sending important threat data to the server for backend analysis, and subsequently acquiring further detection and removal instruction," Jingli Li and Zhitao Zhou of Microsoft Malware Protection Center wrote on the company's blog.

"The process can take seconds to minutes, and is designed to remove malware not handled by the traditional on-the-box signature approach."

Kaspersky, Microsoft and Sophos have developed signatures for the Bohu trojan, which the researchers noted relies on the user installing, installing a rigged video codec.

According to Microsoft's researchers, the network driver that Bohu installs probes for HTTP request keywords and the cloud-server names of major Chinese AV vendors, Kingsoft, Qihoo, and Rising, the company involved in a corruption fiasco, which resulted in a suspended death sentence for a senior Chinese bureaucrat.

Copyright © iTnews.com.au . All rights reserved.


Trojan built to disable cloud antivirus
 
 
 
Top Stories
Photos: Global Switch opens Sydney East data centre
First stage opened, to some fanfare.
 
ATO releases long-awaited Bitcoin guidance
Everyday investors escape the tax man.
 
Why the Weather Bureau’s new supercomputer is a 'gamechanger'
IT transformation starts to reap results.
 
 
Sign up to receive iTnews email bulletins
   FOLLOW US...
Latest articles on BIT Latest Articles from BIT
Looking for storage? Seagate has five new small business NAS devices
Aug 22, 2014
Seagate has announced a new portfolio of Networked Attached Storage (NAS) solutions specifically ...
Run a small business in western Sydney?
Aug 15, 2014
This event might be of interest if you're looking to meet other people with a similar interest ...
Buying a tablet? Microsoft's Surface Pro 3 goes on sale this month
Aug 8, 2014
Microsoft has announced its Surface Pro 3 will go on sale in Australia on 28 August from ...
Apple's top MacBook Pro with Retina is now cheaper
Aug 1, 2014
Apple has updated its MacBook Pro range with faster processors and new pricing, including ...
Pass on carbon tax savings, warns ACCC
Jul 24, 2014
The ACCC is warning businesses that supply "regulated goods" to pass on any cost savings ...
Latest Comments
Polls
Which is the most prevalent cyber attack method your organisation faces?




   |   View results
Phishing and social engineering
  68%
 
Advanced persistent threats
  3%
 
Unpatched or unsupported software vulnerabilities
  12%
 
Denial of service attacks
  7%
 
Insider threats
  11%
TOTAL VOTES: 482

Vote