Legitimate program becomes trojan downloader

Posted by   Virus Bulletin on   Mar 17, 2008

Website of FlashGet attacked; malicious 'update' automatically downloaded.

By hacking into the website of popular Windows download manager FlashGet, cybercriminals have managed to turn the software into a trojan-downloader.

Like many programs, FlashGet regularly connects to its developer's website to see if there are any updates to be installed. However, attackers have managed to hack into the FlashGet website and substitute an 'updated' version of one of the program's configuration files for a genuine update. The rogue configuration file caused a trojan to be downloaded when the program was launched. The hackers even managed to host the trojan itself on the developer's website, thus making the altered configuration file look less suspicious.

It is believed that the program worked as a trojan downloader for about ten days, after which the problem was fixed and the configuration file was reset to its original state. However, as Kaspersky's Aleks Gostev warns, any piece of malware that is able to change this file can still turn the legitimate program into a trojan-downloader. To make matters worse, FlashGet is usually treated as a trusted application; hence network activity caused by the application is unlikely to be flagged as suspicious.

More can be found on Kaspersky's blog here.

Posted on 17 March 2008 by Virus Bulletin

twitter.png
fb.png
linkedin.png
googleplus.png
reddit.png

 

Latest posts:

The Virus Bulletin conference returns home: VB2019 to take place in London

In 2019, the Virus Bulletin conference is set to return home, with VB2019 taking place in London, UK.

Guest blog: The case for increasing transparency in cybersecurity

In a guest blog post, Kaspersky Lab's Anton Shingarev considers the case for increasing transparency in cybersecurity.

VB2018 preview: Workshops

Workshops make their VB Conference debut during VB2018, giving delegates the opportunity to learn the basics of kernel-level malware analysis, Android reverse-engineering and artificial intelligence.

New article: Through the looking glass: webcam interception and protection in kernel mode

Today we publish a short article by Ronen Slavin and Michael Maltsev, researchers at Reason Software Company, who dive into the video capturing internals on Windows, and explain how this can be used by a malicious actor to steal images recorded by a…

VB2018 preview: The botnet landscape - live threats and steps for mitigation (Small Talk)

In a Small Talk at VB2018, Spamhaus's Simon Forster will present the organization's research into the botnet landscape and will discuss with the audience topics such as how the rise of anonymzation techniques and the hosting of botnets on…

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.