Feeds

Yahoo! variant! of! Microsoft! support! worm! spreading! rapidly!

Who will rid us of these turbulent worms?

  • alert
  • submit to reddit

Beginner's guide to SSL certificates

Update Stop us if you've heard this before, but there's another prolific email worm loose on the Internet today.

Sobig-E differs from its predecessors, the Sobig-B (aka 'support@microsoft.com') and Sobig-C (aka 'bill@microsoft.com') worms, by spreading itself in the form of a ZIP file. This time around infectious emails sent out by Sobig-E pretend to come from support@yahoo.com or another spoofed email address.

The worm is spreading rapidly, with many vendors upgrading the severity ratings they attach to the worm this morning. At the time of writing, managed services firm MessageLabs has blocked 22,156 copies of the worm over the last 24 hours.

Sobig-E normally spreads via emails with randomised subject lines (such as Re: Documents and Re: Re: Movie) and . zip attachments containing infectious .scr and .pif files. Like its predecessors, Sobig-E has a built-in expiry date - in this case 14 July. Click on the infectious attachments and you catch the pox.

As usual, the worm affects only Windows PCs. Linux and Mac users are immune.

On infected PCs Sobig-E sends email to addresses collected from files with the following extensions: .wab, .dbx, .htm, .html, .eml, .txt. This trick is the likely reason behind the worm's rapid rise to prominence.

Sobig-E appears to also have the ability to spread via
network shares and uses its own SMTP mail engine for sending email to further propagate.

So what to do?

Don't run suspicious email attachments and update your AV signature files.

It's as simple as that really.

A write-ups of the varmint by Symantec provides more detailed information. ®

Related Stories

VX writers release sequel to infamous Sobig worm
Why did support @ microsoft send me a virus this morning?
Why spammers lurve the 'Microsoft support' worm
Fizzer blasts Klez-H off top spot in viral charts

Choosing a cloud hosting partner with confidence

More from The Register

next story
Apple's new iPhone 6 vulnerable to last year's TouchID fingerprint hack
But unsophisticated thieves need not attempt this trick
SMASH the Bash bug! Red Hat, Apple scramble for patch batches
'Applying multiple security updates is extremely difficult'
Oracle SHELLSHOCKER - data titan lists unpatchables
Database kingpin lists 32 products that can't be patched (yet) as GNU fixes second vuln
Who.is does the Harlem Shake
Blame it on LOLing XSS terroristas
Researchers tell black hats: 'YOU'RE SOOO PREDICTABLE'
Want to register that domain? We're way ahead of you.
Stunned by Shellshock Bash bug? Patch all you can – or be punished
UK data watchdog rolls up its sleeves, polishes truncheon
Desperate VXers enslave FREEZERS in DDoS bot
Updated Spike malware targets Asia
Ello? ello? ello?: Facebook challenger in DDoS KNOCKOUT
Gets back up again after half an hour though
prev story

Whitepapers

Providing a secure and efficient Helpdesk
A single remote control platform for user support is be key to providing an efficient helpdesk. Retain full control over the way in which screen and keystroke data is transmitted.
Intelligent flash storage arrays
Tegile Intelligent Storage Arrays with IntelliFlash helps IT boost storage utilization and effciency while delivering unmatched storage savings and performance.
Beginner's guide to SSL certificates
De-mystify the technology involved and give you the information you need to make the best decision when considering your online security options.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.
Secure remote control for conventional and virtual desktops
Balancing user privacy and privileged access, in accordance with compliance frameworks and legislation. Evaluating any potential remote control choice.