Feeds

Windows Shortcut Flaw underpins power plant Trojan

Dangerous lnk to spying

Build a business case: developing custom apps

Hackers have developed malware that spreads via USB sticks using a previously unknown security weakness involving Windows' handling of shortcut files.

Malware targeting the security weakness in the handling of 'lnk shortcut files has been spotted in the wild by Belarus-based security firm VirusBlokAda. The malware uses rootkit-style functionality to mask its presence on infected systems. These rootlet drivers come digitally signed by legitimate software developer Realtek Semiconductor, a further mark of the sophistication of the attack.

In an advisory, VirusBlokAda says it has seen numerous incidents of the Trojan spy payloads dropped by the malware since adding detection for the malign code last month.

Even fully patched Windows 7 systems are vulnerable to attack in cases where a user views files on an infected USB drive using Windows Explorer, security blogger Brian Krebs reports. Instead of using Windows Autoplay to spread the malware takes advantage of security weaknesses involving shortcut files. Malicious shortcuts on the USB are reportedly capable of auto-executing if users open an infected storage device on Windows Explorer. Normally users would have to click on the link for anything to happen.

Independent researcher Frank Boldewin has uncovered evidence that the malware is targeting SCADA control systems, used to control industrial machinery in power plants and factories, and specifically Siemens WinCC SCADA systems.

"Looks like this malware was made for espionage," Boldewin writes.

Firms faced with a spate of Windows autorun worms have responded by disabling autorun, but this advice may no longer be enough with the appearance of a new attack vector, Finnish security firm F-Secure warns. "Our initial analysis of the samples appears to indicate that the shortcuts somehow take advantage of the way in which Windows handles Control Panel shortcut files," it adds.

Microsoft is reportedly in the process of investigating the apparent security flaw underpinning the attack. ®

Next gen security for virtualised datacentres

Whitepapers

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.
Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Scale data protection with your virtual environment
To scale at the rate of virtualization growth, data protection solutions need to adopt new capabilities and simplify current features.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?