Feeds

Price isn't right for new Bagle variant

Worm du jour

  • alert
  • submit to reddit

Secure remote control for conventional and virtual desktops

Yet another variant of the mass-mailing Bagle worm began spreading widely yesterday.

Bagle-AQ (AKA Bagle-AL or Bagle-AC) normally spreads by emails containing an infectious attachment. The attachment name is variable, but always contains the word "price". The attachment is always ZIP, although it could sometimes be encrypted. In these cases the email contains the password in an image.

This archive contains a HTML file and the worm's payload, an EXE file. When the HTML file is accessed, the worm uses a well-known (Object Data) vulnerability in Internet Explorer to load and execute its payload. Once this payload is executed, infected PCs begin spamming out copies of the worm to email addresses harvested from the hard disks of compromised machines.

Bagle-AQ can also spread over P2P networks. Files infected with the worm but posing as useful utilities or games are copies into P2P share directories of compromised machines.

Like previous variants of Bagle, the worm contains a backdoor which allows the author of the virus to control infected machines. Bagle-AQ also tries to terminate various AV programs on infected machines.

Bagle-AQ spread rapidly initially, possibly because of the use of spamming software by its unknown authors. As usual, Bagle-AQ is a Windows-only menace.

Standard defensive precautions apply: avoid opening unsolicited attachments, even when they appear to come from people you trust; update AV tools to detect the worm; update IE with Microsoft's latest patches. ®

Related stories

Bagle copycat builds Zombie attack network
Bagle source code unleashed
Zombie PCs spew out 80% of spam
MyDoom and NetSky cause chaos
War of the worms turns into war of words

Intelligent flash storage arrays

More from The Register

next story
Regin: The super-spyware the security industry has been silent about
NSA fingered as likely source of complex malware family
Why did it take antivirus giants YEARS to drill into super-scary Regin? Symantec responds...
FYI this isn't just going to target Windows, Linux and OS X fans
Privacy bods offer GOV SPY VICTIMS a FREE SPYWARE SNIFFER
Looks for gov malware that evades most antivirus
Home Office: Fancy flogging us some SECRET SPY GEAR?
If you do, tell NOBODY what it's for or how it works
HACKERS can DELETE SURVEILLANCE DVRS remotely – report
Hikvision devices wide open to hacking, claim securobods
'Regin': The 'New Stuxnet' spook-grade SOFTWARE WEAPON described
'A degree of technical competence rarely seen'
Syrian Electronic Army in news site 'hack' POP-UP MAYHEM
Gigya redirect exploit blamed for pop-rageous ploy
Astro-boffins start opening universe simulation data
Got a supercomputer? Want to simulate a universe? Here you go
prev story

Whitepapers

Seattle children’s accelerates Citrix login times by 500% with cross-tier insight
Seattle Children’s is a leading research hospital with a large and growing Citrix XenDesktop deployment. See how they used ExtraHop to accelerate launch times.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
Why CIOs should rethink endpoint data protection in the age of mobility
Assessing trends in data protection, specifically with respect to mobile devices, BYOD, and remote employees.
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.
Website security in corporate America
Find out how you rank among other IT managers testing your website's vulnerabilities.