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Malware

Flashback Friday: The Melissa virus

In 1999, David L. Smith launched the Melissa virus. Within a few hours, it had infected thousands of computers. We take a look back at its impact.

Nymaim rides again in 2016 and reaches Brazil

During the first half of this year, ESET has observed an increase in the number of detections of Nymaim, a long-known malware family whose prevalence has fallen markedly since 2014.

Over 1000 Wendy’s restaurants hacked – customers’ credit card details stolen

Fast food giant Wendy’s says that it now believes that more than 1000 of its restaurants across the United States have fallen victim to a hacking gang, who used malware to steal customers’ credit and debit card information.

New OSX/Keydnap malware is hungry for credentials

For the last few weeks, ESET has been investigating OSX/Keydnap, a malware that steals the content of the keychain while maintaining a permanent backdoor.

Espionage toolkit targeting Central and Eastern Europe uncovered

Over the course of the last year, ESET has detected and analyzed several instances of malware used for targeted espionage – dubbed SBDH toolkit.

Malicious scripts in compromised websites and how to protect yourself

Some of the most dangerous vectors used by cybercriminals are those that involve scripts, since they are difficult for users to detect, says Josep Albors.

Nemucod ups its game

The creators of Nemucod, the code responsible for downloading and executing malware like Locky, have been hard at work polishing their code.

Infrastructure attacks: The next generation

ESET’s David Harley revisits the Stuxnet phenomenon: How has the way we see the malware and its impact changed?

Another malware wave hits Europe, mainly downloading Locky ransomware

ESET LiveGrid® telemetry shows a spike in detections of the JS/Danger.ScriptAttachment malware in several European countries.

Another Eurovision contestant? Even malware can ‘perform music’

In contrast to the Eurovision contestants, malware writers try to make their creations as stealthy as possible. But thanks to unique behavior and sometimes even unintended showmanship of their malicious code, they end up in the limelight.

FBI: No, you shouldn’t pay ransomware extortionists

The FBI has published a list of tips to reduce the chance of ransomware being the ruin of your company – and is keen that you don’t pay the extortionists.

Ransomware and the Internet of Things

A report from the Institute for Critical Infrastructure Technology warns that ransomware could be hitting more than just your regular computer in future…

Dorkbot: 5 years since detection

In the half-decade that has lapsed since Dorkbot was first identified, millions of innocent victims, going about their everyday business, have been affected in over 190 countries. It has, quite literally, wormed its malicious way into computer systems throughout the world.

Meet Remaiten – a Linux bot on steroids targeting routers and potentially other IoT devices

ESET researchers are actively monitoring malware that targets embedded systems such as routers, gateways and wireless access points. We call this new threat Linux/Remaiten.

ESET discovers new USB-based data stealing malware

ESET has discovered a new USB-based data stealer capable of stealthy attacks against air-gapped systems – it is also well-protected against detection and reverse-engineering.

New self-protecting USB trojan able to avoid detection

A unique data-stealing trojan has been spotted on USB devices in the wild – and it is different from typical data-stealing malware, reports ESET’s Tomáš Gardoň.

Android banking trojan masquerades as Flash Player and bypasses 2FA

This malware masquerades as Flash Player, behaves like a screen locker, and can bypass two-factor authentication. This combination of features turns it into a powerful tool for stealing money from victims’ bank accounts.

New Mac ransomware appears: KeRanger, spread via Transmission app

New ransomware infecting Apple OS X surfaced on March 4th, 2016, with the emergence of KeRanger. The first inkling of trouble came at the weekend.

Razzies for malware: These were the worst performances of the year

Just as audiences have suffered from bad movie craftsmanship, IT users have had to endure the consequences of the malicious work done by malware authors. Welcome to Razzies for malware.

Porn clicker trojans keep flooding Google Play

ESET researchers have found 343 malicious porn clicker trojans on Google Play over the last seven months – and their numbers keep rising.

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