What is WannaCry ransomware
ransomware wannacry is now a multimillion dollar industry as lots of computer are being affected on daily basis.lots of people may be wondering how this is possible. well, you are going to learn more on ransomware wannacry soon because as long as you make use of anything computer, be it a smart phone, laptop etc, there is need to protect your device against this nightmare called wannacry ransomware.
so Is your computer vulnerable to the WannaCry ransomware Trojan? We have analyzed this attack in detail, and are ready to share with you what we managed to find out.
In this article we will learn:
- What is WannaCry ransomware virus
- How the attack works with its use
- Consequences of the attack
- How to protect your computer from ransomware malware
What is WannaCry ransomware virus
WannaCry is an example of crypto ransomware – a type of malware used by cybercriminals to obtain a ransom.Ransomware either encrypts valuable files so that you cannot read them, or they block your computer so that you cannot use it.Ransomware, which encrypts valuable files on a computer so that the user cannot access them, are called ransomware. Ransomware that simply blocks the normal operation of a computer or smartphone is called blockers.
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Like other types of crypto ransomware, WannaCry takes your data “hostage” and promises to return it for a ransom.WannaCry is for Windows computers. It encrypts the data and requires the payment of a ransom in bitcoins for their decryption.Bitcoin opposite the laptop monitor symbolizes the ransom that the WannaCry program extorts.
What was an attack using WannaCry?
The WannaCry attack was discovered in May 2017 and was global in nature.The ransomware attacked Windows computers, encrypted user files, and demanded a ransom in bitcoins for decrypting them.If it were not for the continued use of outdated computer systems and a poor understanding of the need for regular software updates, the damage caused by this attack could have been avoided.Old computer and outdated computer systems became the target of the WannaCry attack
How the WannaCry attack works
The cybercriminals behind the attack exploited the vulnerability present in the Microsoft Windows operating system using an exploit that was allegedly developed by the US National Security Agency.This exploit, code-named EternalBlue, was published on the Internet by a group of hackers Shadow Brokers a month before the start of the WannaCry attack.
At the same time, Microsoft released a patch to close the vulnerability almost two months before the start of the WannaCry attack. Unfortunately, many users and organizations do not update their operating systems regularly and therefore became victims of the attack.Users who failed to install the patch on time turned out to be unprotected and were attacked using the EternalBlue exploit.
At first, users suggested that the WannaCry ransomware attack was spread via a phishing email (phishing email is spam email containing infected links or attachments that trick users into downloading malware). Subsequently, it turned out that WannaCry was distributed through the vulnerabilities of EternalBlue and the DoublePulsar backdoor, with which the encryptor was installed.
What happened if the victim refused to pay the ransom
At first, the attackers demanded a ransom of $ 300 bitcoins, and then increased their “appetites” to $ 600 bitcoins. If no money was received within three days, the victim received a message stating that her files would be permanently deleted.We advise users not to blackmail. Do not pay the ransom, because there is no guarantee that you will receive your data back. In addition, each payment convinces cybercriminals of the effectiveness of their business model and, thus, increases the likelihood of future attacks.
This tip turned out to be useful in the case of WannaCry, because there were errors in the code used in the attack. When the victims paid the ransom, the attackers could not associate the payment with the computer of the specific victim.There are certain doubts that someone managed to get their files back. Most researchers claimed this was unlikely, however, F-Secure said there were such cases. All this should serve as a serious reminder of why you do not need to pay a ransom if you have been attacked by ransomware.Hacked computer with a falling american dollar bill
Consequences of the WannaCry attack
As a result of the WannaCry ransomware attack, more than 230,000 computers worldwide were affected.One of the first victims was the Spanish telecommunications company Telefónica. By May 12, thousands of UK hospitals were forced to refuse patients.A third of UK hospitals were attacked. It is reported that ambulances were redirected to other addresses, but people who needed urgent help did not receive it. According to some estimates, the attack cost health organizations a whopping £ 92 million after canceling 19,000 patient appointments.
The extortionist was operating far beyond the borders of Europe – computer systems were disabled in 150 countries of the world. The WannaCry attack had serious financial consequences: global losses are estimated at $ 4 billion.
Now you know how the WannaCry ransomware attack developed, and what consequences it had. Let’s look at how you can protect yourself from ransomware.
Here are some suggestions:
Update your software and operating system regularly
Computer users became victims of the WannaCry attack because they did not update their Microsoft Windows operating system.
If they regularly updated their operating systems and timely installed the patch released by Microsoft two months before the attack, there would have been no trouble.This patch covered a vulnerability that EternalBlue used to infect computers with the WannaCry ransomware.Be sure to update the software and operating system. This is an important way to protect against ransomware.
Do not follow suspicious links
If you open an unfamiliar email or go to a site that is not credible, do not click on the links. Clicking on unverified links can lead to the download of ransomware viruses.
Do not open attachments in emails from unknown senders
Do not open email attachments if you are unsure of their security. Do you know the sender and trust him? Do you understand what this investment is?
Have you been waiting for this attachment?
If you are asked to include macros in the attachment to view it, in no case do this. Do not turn on macros or open attachments – this is the most commonly used way of distributing crypto ransomware and other types of malware.
Do not download anything from untrusted sites
Downloading files from unknown sites increases the risk of downloading ransomware. Use only reliable resources to download files.
Do not use other people’s USB devices.
Do not insert other people’s USB drives or other removable storage devices into your computer. They can be infected with ransomware Trojans.
USB stick lying on the table: a reminder not to use an unknown removable file storage to prevent ransomware attacks
Use a secure VPN connection when connecting via public Wi-Fi
Use caution when using public Wi-Fi: at this point, your computer system becomes more vulnerable to attacks.
Use a secure VPN connection to protect yourself from the risk of malware infection when connecting via public Wi-Fi.
Install security software
To ensure the security of your computers while browsing the Internet, install security software. Choose a comprehensive solution that protects against many complex threats, such as the Kaspersky Lab System Watcher .
Update security software regularly
To ensure that your security solution provides maximum protection for your computer (including all the latest security patches), update it regularly.
Back up your data
Back up your data regularly to an external drive or to cloud storage. If you become a victim of ransomware, your data will be safe. Remember to disconnect the external storage device from the computer after performing the backup. If this is not done, crypto ransomware will be able to encrypt data on these devices.