ESET Research

There is a new bot on the block. ESET identifies it as Win32/Napolar while its author calls it solarbot. This piece of malware came to our attention mid-August because of its interesting anti-debugging and code injection techniques.

Trojans that encrypt user files and try to extort a ransom from the victim in exchange for a decryptor utility are nothing new. We’ve noted a significant increase in Filecoder activity over the past few summer months - in this blog post we address the questions we’re getting about this issue.

We think that there could be rootkits targeting the OS X platform, but we have very limited visibility into that threat right now. We know that we don’t know. Today, ESET is releasing a simple tool to detect rootkits on OS X.

In this 3rd Hesperbot blog post we’ll look at the most intriguing part of the malware - the way it handles network traffic interception.

Win32/Spy.Hesperbot is a new banking trojan that has been targeting online banking users in Turkey, the Czech Republic, Portugal and the United Kingdom. For more information about its malware spreading campaigns and victims, refer to our first blog post. In this post we’ll cover the technical details of the malware, including the overall architecture, as well as the mobile component.

A new and effective banking trojan has been discovered targeting online banking users in Turkey, the Czech Republic, Portugal and the United Kingdom. It uses very credible-looking phishing-like campaigns, related to trustworthy organizations, to lure victims into running the malware.

A few months ago on this blog I described PowerLoader functionality - including an interesting way for privilege escalation into the explorer.exe system process. The leaked PowerLoader code is also used in other malware families.

We look at malware delivered by a campaign that has infected thousands of websites around the world - and the various control flow obfuscation techniques that make its analysis as interesting as it is challenging.

Orbit Downloader by Innoshock is a popular browser add-on often used to download embedded videos from sites such as YouTube. But the popular add-on has disturbing hidden functions.