'Nitro attacks' continue

Posted by   Virus Bulletin on   Dec 13, 2011

PoisonIvy trojan sent attached to email warning about the same trojan.

Researchers at Symantec report that the 'Nitro attacks', which target a number of large companies, many of which are active in the chemical industry, are continuing, using the same methods as before.

In the most recent part of this attack, employees of the targeted companies received emails containing a password-protected zip archive. The archive contained an executable (although the filename suggested it was a PDF document) which installed a variant of the PoisonIvy trojan. At the same time, a harmless PDF was dropped onto the victim's machine, apparently in an attempt to distract the user from the malicious installation that had taken place.

None of these techniques are new, nor are they very sophisticated. What is remarkable in this case is that the emails contained a warning against the PoisonIvy trojan itself and claimed that the attachment contained 'a special kill poison Ivy Trojan anti-virus software', apparently released by Symantec. The harmless PDF dropped onto the victim's machine was the very document Symantec published earlier about these Nitro attacks.

It is important for users to be aware of such attacks, especially if they target the industry they are working in. This example shows, however, that one should never blindly install software even if it is supposed to provide protection.

More at Symantec's blog here.

At the 3rd VB 'Securing Your Organization in the Age of Cybercrime' Seminar, Symantec.cloud's Martin Lee will talk about targeted attacks. The seminar takes place on 19 April 2012 at the OU Campus in Milton Keynes, UK; registration is now open.

Posted on 13 December 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.