Feeds

Flea bugs Windows users

VBS malware on the loose

  • alert
  • submit to reddit

Protecting users from Firesheep and other Sidejacking attacks with SSL

A new virus called Flea is on the loose. The Visual Basic Script worm disguises itself as the ‘signature file’ in HTML-formatted mail.

Flea can execute automatically when users open HTML formatted emails in Microsoft Outlook or Outlook Express. Unlike most Windows nasties, the bug does not depend on a user opening an infectious file to do its mischief, Finnish AV vendor F-Secure warns.

When an infected HTML email is rendered a webpage is loaded. This page contains JavaScript which in turn loads another webpage containing the VB Script which drops a file (C***.HTM) in the Windows folder.

This file is also set to the signature of Outlook Express, furthering the spread of the worm. Flea changes Internet Explorer settings on infected machines as explained in F-Secure's advisory .

To hide itself and to make analysis more difficult, Flea uses several encryption layers.

F-Secure has received "multiple reports of this worm from Asia and Europe". Rival AV vendors give Flea a much lower risk rating.

AV vendor Sophos, for example, has so far received just one report of this worm in the wild.

Vendors have updated signature definition files to detect Flea, which once again highlights the security risks of using Microsoft email clients in default configurations. ®

The next step in data security

More from The Register

next story
Israeli spies rebel over mass-snooping on innocent Palestinians
'Disciplinary treatment will be sharp and clear' vow spy-chiefs
Infosec geniuses hack a Canon PRINTER and install DOOM
Internet of Stuff securo-cockups strike yet again
'Speargun' program is fantasy, says cable operator
We just might notice if you cut our cables
Apple Pay is a tidy payday for Apple with 0.15% cut, sources say
Cupertino slurps 15 cents from every $100 purchase
YouTube, Amazon and Yahoo! caught in malvertising mess
Cisco says 'Kyle and Stan' attack is spreading through compromised ad networks
Hackers pop Brazil newspaper to root home routers
Step One: try default passwords. Step Two: Repeat Step One until success
Greater dev access to iOS 8 will put us AT RISK from HACKERS
Knocking holes in Apple's walled garden could backfire, says securo-chap
Microsoft to patch ASP.NET mess even if you don't
We know what's good for you, because we made the mess says Redmond
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.
Saudi Petroleum chooses Tegile storage solution
A storage solution that addresses company growth and performance for business-critical applications of caseware archive and search along with other key operational systems.
Security and trust: The backbone of doing business over the internet
Explores the current state of website security and the contributions Symantec is making to help organizations protect critical data and build trust with customers.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Security for virtualized datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.