New virus targets, encrypts .exe files

Antivirus vendor Central Command Inc. has detected a new worm that, disguised as a warning from Microsoft Corp., mass-mails itself to users and once launched from an attachment, encrypts executable files, rendering them unusable.

The Medina, Ohio-based security company rates the virus as a medium risk and said that so far, there has been only one report of an infection. The worm, Win32.Invalid.A@mm, can infect computers running Windows 9x, NT and 2000.

Even so, Ryan Russell, an analyst at business security firm SecurityFocus.com Inc. in San Mateo, Calif., said the virus does pose a threat. "I think it's just early in the cycle," he said.

According to the announcement from Central Command, "The new worm named Win32.Invalid.A@mm carries a destructive payload that can render executable (.exe) applications unusable by encrypting them with a random encryption key."

The worm-embedded e-mail has a false From field indicating that it's from support@microsoft.com. It directs the user to download a patch to prevent buffer overruns in Internet Explorer from invalid Secure Sockets Layer (SSL) certificates.

"The SSL protocol is used by many companies that require credit card or personal information, so there is a high possibility that you have this certificate installed," the bogus e-mail says. "To avoid being attacked by hackers, please download and install the attached patch. It is strongly recommended to install it because almost all users have this certificate installed without their knowledge."

Join the newsletter!

Or
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.

Jennifer DiSabatino

Computerworld
Show Comments

Essentials

James Cook University - Master of Data Science Online Course

Learn more >

Mobile

Sansai 6-Outlet Power Board + 4-Port USB Charging Station

Learn more >

Exec

Budget

Back To Business Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Louise Coady

Brother MFC-L9570CDW Multifunction Printer

The printer was convenient, produced clear and vibrant images and was very easy to use

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

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.

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?