Feeds

Sobig second wave attack fails to strike

Worm still spreading like crazy

  • alert
  • submit to reddit

The Power of One eBook: Top reasons to choose HP BladeSystem

The Internet community succeeded in cutting off the links that would have allowed the prolific Sobig-F worm to phone home last weekend.

This action prevented the worm downloading new and potentially even more malevolent code onto infected PCs. However, the worm itself is continuing to spread.

As we reported on Friday, Sobig-F includes code that attempts to contact a list of 20 predefined IP addresses on UDP port 8998 on Fridays and Sundays between 1900 and 2200GMT (as explained here). Security experts believed these addresses contained locations from where additional code could be downloaded.

This potential activity produced a major security flap last Friday, when the virus was expected to attempt these actions for the first time, but in the event nothing much happened. The owners of the servers were contacted and all bar one of the 20 master servers were taken offline. The one rogue server that did remain online only did so intermittently and it to was taken offline by the time of the second wave of the attack. An advisory by F-Secure gives a timeline for the attack.

Although the threatened weekend attack proved to be something of a damp squib, the worm itself continues to breed like rabbits on particular potent fertility drugs.

Sobig-F, the sixth in a series of increasing annoying malware variants, is due to deactivate on 10 September but there's no guarantee that an even more prolific virus might be released in its wake. ®

Related stories

Sobig-F timed for Trojan download tonight?
Sobig-F is fastest growing virus ever - official
Auto-responders magnify Sobig problem
Email worm joins Blaster attack on Windows
Why spammers lurve the 'Microsoft support' worm (Sobig-A)

The Power of One eBook: Top reasons to choose HP BladeSystem

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
Mozilla fixes CRITICAL security holes in Firefox, urges v31 upgrade
Misc memory hazards 'could be exploited' - and guess what, one's a Javascript vuln
BMW's ConnectedDrive falls over, bosses blame upgrade snafu
Traffic flows up 20% as motorway middle lanes miraculously unclog
LibreSSL RNG bug fix: What's all the forking fuss about, ask devs
Blow to bit-spitter 'tis but a flesh wound, claim team
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
Yorkshire cops fail to grasp principle behind BT Fon Wi-Fi network
'Prevent people that are passing by to hook up to your network', pleads plod
Don't look, Snowden: Security biz chases Tails with zero-day flaws alert
Exodus vows not to sell secrets of whistleblower's favorite OS
Researcher sat on critical IE bugs for THREE YEARS
VUPEN waited for Pwn2Own cash while IE's sandbox leaked
prev story

Whitepapers

Top three mobile application threats
Prevent sensitive data leakage over insecure channels or stolen mobile devices.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Top 8 considerations to enable and simplify mobility
In this whitepaper learn how to successfully add mobile capabilities simply and cost effectively.
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.
The Essential Guide to IT Transformation
ServiceNow discusses three IT transformations that can help CIO's automate IT services to transform IT and the enterprise.