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ESET® Internet Security

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ESET Internet Security
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Some recent ransomware outbreaks

What is Bad Rabbit ransomware?

On Oct. 24, 2017, several transportation organizations in Ukraine, as well as some governmental organizations, suffered a ransomware attack. This malware infection, known as Bad Rabbit (detected by ESET as Win32/Diskcoder.D) resulted in computers becoming encrypted, with data locked up and held for ransom. Computer systems in the Kiev Metro and Odessa airport were affected, as well as systems in Russia, Turkey and Germany.

ESET discovered that in the case of the Kiev Metro, the malware used for the cyberattack was Diskcoder.D, a new variant of ransomware known also as Petya. The previous variant of Diskcoder was used in a global cyberattack in June, 2017.

One of the distribution methods of Bad Rabbit is through drive-by download via watering hole on popular sites. Site visitors are told that they need to install a Flash update, but instead receive a malicious install. The victims then see a ransom note demanding payment in Bitcoin for their files to be released.

What is Petya ransomware?

On June 27, 2017, a ransomware attack known as Petya (detected by ESET as Win32/Diskcoder.C Trojan) began spreading rapidly around the globe.

The Petya malware attacks a computer's MBR (master boot record), a key part of the startup system. If the malware successfully infects the MBR, (master boot record), it will encrypt the whole drive itself. The computer user then receives a message that the files have been encrypted, with a demand that a ransom be paid to release them.

What is WannaCry ransomware?

On May 12, 2017, a ransomware attack known as WannaCry (detected by ESET as Win32/Filecoder.WannaCryptor.D) spread rapidly across the globe.

When WannaCry touches a user’s computer, it encrypts all its files, effectively locking them up and making them unavailable to the victim. A ransom is demanded in the form of Bitcoin in exchange for restoring access to the files.

The price for unlocking the data and hardware increases with time. If the payment isn’t made by the deadline, the computer is rendered permanently inaccessible.

Why you need ransomware protection

In 2016, the U.S. Department of Justice revealed that the Internet Crime Complaint Center (IC3) had received nearly 7,700 public complaints regarding ransomware since 2005, totaling $57.6 million in damages. Those damages include ransoms paid—generally $200 to $10,000, according to the FBI—as well as costs incurred in dealing with the attack and estimated value of data lost. In 2015 alone, victims paid over $24 million across nearly 2,500 cases reported to the IC3.

How ESET protects against ransomware

Ransomware Protection

Ransomware Shield

Uses multilayered malware prevention and detection to keep criminals from holding your data hostage.


Network Attack Protection

Prevents spread of ransomware by protecting against vulnerabilities for which a patch has not yet been released or deployed.

Cloud Malware Protection System

Cloud Malware Protection System

Analyzes submitted malware and provides results to endpoints without requiring an update.