Fake Microsoft security alert includes Trojan patch

A fake Microsoft Security Bulletin alert in circulation this week links to malicious software.

A new wave of spam that disguises itself as a Microsoft security bulletin contains a link to malicious software that gives attackers complete access to the infected machine, security researchers are reporting.

The e-mail, which began circulating late Tuesday, identifies itself as Microsoft Security Bulletin MS05-039, and offers a link to what it claims is a patch against the Sober Zafi and Mytob worms.

In fact, there is no such thing as Microsoft Security Bulletin MS05-039, and real Microsoft security bulletins offer links to a Microsoft download site, rather than to the patches themselves, said Mikko Hypponen, director of antivirus research at F-Secure.

The phony patch is a variant of the SDBot Trojan software, which is at present not detected by antivirus software products, according to a report form security research firm WebSense.

The risk of someone downloading this Trojan appears to be very low right now, because the server hosting the Trojan downloads no longer appears to be active, Hypponen said. That server, which appeared to be hosted by ThePlanet.com Internet Services, apparently has exceeded its allowed bandwidth, he said.

"I think this particular case is not going to be a problem anymore, but nevertheless I think it was a fairly interesting case," Hypponen said. "I wouldn't be surprised to see more of this happening."

The Swen e-mail worm, which began circulating in 2003, used a similar technique, he added.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Robert McMillan

IDG News Service
Show Comments

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

David Coyle

Brother PocketJet PJ-773 A4 Portable Thermal Printer

I rate the printer as a 5 out of 5 stars as it has been able to fit seamlessly into my busy and mobile lifestyle.

Kurt Hegetschweiler

Brother PocketJet PJ-773 A4 Portable Thermal Printer

It’s perfect for mobile workers. Just take it out — it’s small enough to sit anywhere — turn it on, load a sheet of paper, and start printing.

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?