'Son of Stuxnet' trojan found

Posted by   Virus Bulletin on   Oct 19, 2011

'Duqu' used in targeted attacks to steal specific information.

Researchers at both Symantec and McAfee have discovered a new Remote Access Trojan (RAT) with strong links to Stuxnet being used in some highly targeted attacks.

The trojan, which has been named 'Duqu' after the files with prefix ~DQ it creates, shares source code with Stuxnet - which indicates that its authors had access to this code and may indeed have been the authors of Stuxnet.

Unlike Stuxnet, which targeted industrial control systems, Duqu appears to be designed solely for stealing information: it contains a keylogger and monitors system activity.

Because of this, and because the trojan is highly targeted at a small number of organisations (among which, according to Symantec, are manufacturers of industrial control systems), it is speculated that it is being used as a precursor of a Stuxnet-like attack: the information obtained by Duqu could be used to attack control systems. It has not been revealed what kind of systems are being targeted, or in which country they reside.

One of Duqu's driver files is digitally signed by a certificate belonging to a Taiwanese company; Stuxnet was signed by certificates belonging to two Taiwanese companies. Symantec researchers believe that this certificate is stolen, rather than falsely generated. It has since been revoked.

McAfee researchers believe that Certificate Authorities (CAs) themselves are among the targets of the attack - in particular those CAs residing in or around the Middle East. The importance of such CAs was seen earlier this year when attackers managed to have rogue certificates signed by Comodo and DigiNotar.

More details at Symantec here and at McAfee here. To recap on what Stuxnet was all about, these FAQs at F-Secure may be helpful.



Posted on 19 October 2011 by Virus Bulletin

twitter.png
fb.png
linkedin.png
hackernews.png
reddit.png

 

Latest posts:

VB2019 paper: Domestic Kitten: an Iranian surveillance program

At VB2019 in London, Check Point researchers Aseel Kayal and Lotem Finkelstein presented a paper detailing an Iranian operation they named 'Domestic Kitten' that used Android apps for targeted surveillance. Today we publish their paper and the video…

VB2019 video: Discretion in APT: recent APT attack on crypto exchange employees

At VB2019 in London, LINE's HeungSoo Kang explained how cryptocurrency exchanges had been attacked using Firefox zero-days. Today, we publish the video of his presentation.

VB2019 paper: DNS on fire

In a paper presented at VB2019, Cisco Talos researchers Warren Mercer and Paul Rascagneres looked at two recent attacks against DNS infrastructure: DNSpionage and Sea Turtle. Today we publish their paper and the recording of their presentation.

German Dridex spam campaign is unfashionably large

VB has analysed a malicious spam campaign targeting German-speaking users with obfuscated Excel malware that would likely download Dridex but that mostly stood out through its size.

Paper: Dexofuzzy: Android malware similarity clustering method using opcode sequence

We publish a paper by researchers from ESTsecurity in South Korea, who describe a fuzzy hashing algorithm for clustering Android malware datasets.

We have placed cookies on your device in order to improve the functionality of this site, as outlined in our cookies policy. However, you may delete and block all cookies from this site and your use of the site will be unaffected. By continuing to browse this site, you are agreeing to Virus Bulletin's use of data as outlined in our privacy policy.