Worm planted in fake Microsoft security update

Malware authors use Microsoft’s schedule to con users.

It's Tuesday, time for more security patches from Microsoft right? Not quite. It seems the malware crowd is exploiting Microsoft's routine of releasing fixes on Tuesdays and sending out fake security emails bent on infecting their targets with a worm.

Windows users familiar with Microsoft's modus operandi will sniff out this scam immediately, though, and not only because of the cracked English in the message. The missive contains the security update in an attachment. Microsoft never sends security updates in attachments.

"Please notice that Microsoft company [sic] has recently issued a Security Update for OS Microsoft Windows," the fake notice reads in typical fractured prose.

It then goes on to give instructions for installing the fake security file, KB453396-ENU.exe. "If nothing changes after you have run the file, probably in the settings of your OS you have an indication to run all the updates at a background routine," it explained

In the signature block of the message is the name of Microsoft Director of Security Assurance Steve Lipner. Lipner's name has been used on bogus security updates before, including attacks in 2008 and 2009.

Graham Cluley, who wrote about the fake security notice for Sophos's Naked Security blog, noticed another bonehead error in the message. "With so much effort being taken by the cybercriminals to hoodwink unsuspecting computer users, though, you would have thought they would have not made an elementary mistake in their forged email header," he penned. "The messages we've seen claim to come from no-reply@microsft.com."

Yes, Microsoft's domain name is misspelled.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags securityMicrosoftonline security

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

John P. Mello Jr.

PC World (US online)
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

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.

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?