Feeds

Linux Trojan spotted in the wild

Fear not, gentle reader

  • alert
  • submit to reddit

Seven Steps to Software Security

A Linux-based Trojan, which security experts believe may have originated in the UK, has been spotted on the Net.

Remote Shell is similar to Back Orifice on the Windows platform according to vulnerability assessment services firm Qualys.

According to Qualys, the trojan is similar to Back Orifice on the Windows platform and in a a doom-laden alert,suggests Remote Shell "could eclipse Code Red" in its impact.

We think this apocalyptic scenario is highly unlikely. And so do many antivirus experts.

Eric Chien, chief researcher at Symantec's antivirus research centre, does not expect the virus to spread, principally because it lacks the self-replication characteristics that made Code Red and the Lion worm (which affected Linux servers) such nuisances.

"I don't think anyone in the security business would consider this particular Linux virus a major (or even minor?) threat to real world computer users," said Chien. "However, it does reiterate the fact that Linux is susceptible just like any other operating system."

Only a handful of viruses has ever been known to infect Linux systems against the many thousands which infect Windows machines.

That said users may wish to consider using Qualys' free vulnerability test (registration required). Antivirus vendors are in the process of updating their signature definition files to detect the Trojan.

Qualys suggests Remote Shell can be disseminated by inconspicuous emails and replicates itself on the infected Linux-based system. The Trojan installs a backdoor that listens for incoming connections on UDP port 5503 or higher, enabling remote attackers to connect and take control of the system.

Once a system is infected, the Remote Shell Trojan calls home to a UK-based Web site where hackers may accumulate lists of infected systems. Qualys has informed the UK's National Criminal Intelligence Service and the FBI about the Trojan and we understand the police are investigating its origins. ®

Related Stories:
Linux worm attempts to take over insecure servers
Highly destructive Linux worm mutating
Code Red busting code gets cool reception
Qwest tries to worm its way off hook for Code Red outages
MS internal network whacked by Code Red
Code Red and the Cisco Side Effect
Son of Code Red is born

Mobile application security vulnerability report

More from The Register

next story
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
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
NEW, SINISTER web tracking tech fingerprints your computer by making it draw
Have you been on YouPorn lately, perhaps? White House website?
LibreSSL RNG bug fix: What's all the forking fuss about, ask devs
Blow to bit-spitter 'tis but a flesh wound, claim team
Black Hat anti-Tor talk smashed by lawyers' wrecking ball
Unmasking hidden users is too hot for Carnegie-Mellon
Attackers raid SWISS BANKS with DNS and malware bombs
'Retefe' trojan uses clever spin on old attacks to grant total control of bank accounts
Manic malware Mayhem spreads through Linux, FreeBSD web servers
And how Google could cripple infection rate in a second
Don't look, Snowden: Security biz chases Tails with zero-day flaws alert
Exodus vows not to sell secrets of whistleblower's favorite OS
prev story

Whitepapers

Designing a Defense for Mobile Applications
Learn about the various considerations for defending mobile applications - from the application architecture itself to the myriad testing technologies.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Reducing security risks from open source software
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.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Consolidation: the foundation for IT and business transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.