How to remove Kuus virus and restore encrypted files

Kuus ransomware virus

Kuus is the dangerous program getting into laptops mostly through Trojans and scam e-mails. Sometimes web-criminals use zero-day vulnerabilities to take control over the system, but they are promptly fixed. After penetration, ransomware scans the hard disc to find the files to be encrypted and their general value. Nowadays, any new virus can cypher video, image, audio and text files in all most used extensions. High attention is paid to businesslike files, because businessmen are the key target for fraudsters. Ransomware encrypts only files with information, and does not touch the software, so that the victim can use the machine to pay the ransom. Encryption is carried out with the help of famous encryption algorithms, and its complexity is so high that decipherment of information without a key is impossible. This is the base for impressive success of this sort of viruses in last years: an ordinary customer, even having a fairly good knowledge of the computer, will never restore the files, and will have to pay the price. The only method to decrypt the data is to find the scammer's webpage and obtain the encryption keys. Some skilled hackers can get these keys due to faults in the code of the virus itself.

This entry is about Kuus virus which gets into users' laptops in all countries of the world, and cyphers the data. In this page you can find important info on Kuus's essence, and the uninstalling of Kuus from your system. In addition, we'll explain how to recover the cyphered information, if possible.

The computer knowledge is extremely substantial in progressive world, as it helps customer to protect the system from undesired software. Unfortunately, 90% of customers see the significance of computer literacy only after ransomware infection. You easily can minimize the chances of getting encrypting virus by following these rules:

    • Be careful with the messages which contain files. If you don't know who send the letter and it is about receiving any prize, a lost package or something like that, this might be ransomware. You also should be watchful with business correspondence, particularly if you don't know the customer who send it and not sure what's inside. lawsuits, appeals, summaries, Invoices for goods and services and suchlike sensitive files cannot come accidentally, and the addressee should know the sender. Otherwise, it is a fraud.
    • Take notice to the pop-up windows. If the PC is penetrated by virus, it will endeavour to delete the shadow copies of your files, to make the decryption impossible. The deletion of copies requires administrator rights and user's verification. So, if you don't confirm alterations from a suspicious program at the right moment, you will save the opportunity to recover all lost data free of charge.
    • Keep an eye on the status of your laptop. Information encrypting is a complicated act that consumes a considerable amount of PC resources. If you notice a noticeable drop in laptop performance or see a strange string in the Process Manager, you can unplug the workstation, boot it in safe mode, and run the anti-malware. Naturally, some files will be damaged, but you will secure the other part.

We draw your attention to the fact that removing Kuus is just a first and compulsory turn for the safe work of the PC. To get back the files you should read the tips in the below section of our article. In case of encrypting virus we do not publish the hand deletion guide, since its complexity and the likeliness of mistakes appears to be very high for common customer. High class ransomware can't be removed even with help of antivirus-program, and have other serious types of protection. The very efficient viral defensive manner is the removal of files in event of file recovery or ransomware removal attempt. This is extremely unwanted, and the following guide will help you to deal with it.

Removal instruction

Step 1. Boot into Safe mode

Safe mode

Start -> Msconfig.exe

Safe mode. Step 1

On the tab Boot select Safe boot

Safe mode. Step 2

Step 2. Check Startup folder

Start -> Msconfig.exe ->Disable unknown programs in the Startup tab


Step 3. Check hosts file

Modify hosts file, that located in C:\Windows\System32\drivers\etc\ .

Hosts file.Step 1

Open the file with Notepad and delete suspicious strings.

Hosts file.Step 2

It has to look like this:

Hosts file.Step 3

Step 4. Scan the system with antiviral scanner

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Step 5. Disable Safe mode

Start -> Msconfig.exe ->Disable Safe boot in the Boot tab

Deactivate Safe mode

After removing the ransomware from the machine, user has to decrypt the polluted files. We won't try to decypher the information, but we'll recover them using Windows functionality and the special software. More often than not, to get back the data, the user has to seek support on targeted forums or from celebrated virus fighters and AV program vendors. If you picked the by-hand data restore - take a look at this article, which shows all the most efficient methods.

To restore information, follow the article about files decryption.

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