Feeds

Virus writers deploy bulk mail software

New multi-stage Trojan rides spam tsunami

  • alert
  • submit to reddit

Securing Web Applications Made Simple and Scalable

Hackers have used spamming software to distribute thousands of copies of a new Trojan. Email filtering firm MessageLabs alone has intercepted more than 4,000 copies of the Demonize-T Trojan over the last 24 hours.

Demonize-T is a multi-stage Trojan that uses an object data exploit in Internet Explorer (patch here) to download and execute an encoded visual basic script from a website. The Trojan then creates an executable file which appears to download a malicious program from the same website as the original script. Early analysis suggests Demonize-T is similar to previous attacks where malicious code has been used to install key loggers and password stealers.

Spammers are increasingly using infected as a platform to distribute spam and this technique has come full circle with virus writers using spam to infect machines in the first place.

Alex Shipp, senior anti-virus technologist at MessageLabs, said hackers are increasingly adopting the tactics of spammers in their attempts to seize control of as many machines as possible. MessageLabs typically block four or five bulk mail batches of Trojans a day. Mostly less than 20 messages are involved so the new attack - with more than 4,000 messages blocked in the space of only 24 hours - is far more intense. MessageLabs detected Demonize-T proactively, using its Skeptic predictive heuristics technology.

"Some parts of these Trojans are new but some code is old. Using old code is a funny tactic for virus writers to use because you can almost guarantee malware will be caught," Shipp commented. ®

Related stories

Zombie PCs spew out 80% of spam
Phatbot arrest throws open trade in zombie PCs
Trojans as spam robots: the evidence
Italian charged in porn dialler virus scam

Mobile application security vulnerability report

More from The Register

next story
HIDDEN packet sniffer spy tech in MILLIONS of iPhones, iPads – expert
Don't panic though – Apple's backdoor is not wide open to all, guru tells us
LibreSSL RNG bug fix: What's all the forking fuss about, ask devs
Blow to bit-spitter 'tis but a flesh wound, claim team
NEW, SINISTER web tracking tech fingerprints your computer by making it draw
Have you been on YouPorn lately, perhaps? White House website?
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
NUDE SNAPS AGENCY: NSA bods love 'showing off your saucy selfies'
Swapping other people's sexts is a fringe benefit, says Snowden
Own a Cisco modem or wireless gateway? It might be owned by someone else, too
Remote code exec in HTTP server hands kit to bad guys
British data cops: We need greater powers and more money
You want data butt kicking, we need bigger boots - ICO
prev story

Whitepapers

Reducing security risks from open source software
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.