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Krusop Virus Removal Guide (+Decrypt .krusop files)

Krusop – Ransomware

Krusop is a malicious software functioning as typical ransomware. Michael Gillespie, the popular malware researcher, very first discovered this new name in the DJVU ransomware family.

Krusop was developed for the sole function to encrypt all popular file types. Logically, as soon as the encryption is successfully achieved, the users are not able to get access to them. Krusop virus includes its own “.krusop” to all the encrypted files. For example, the file “price_list.xls”, when crypted by Krusop, will be titled as “price_list.xls.krusop”. When the encryption is achieved, Krusop puts its own special text document (_readme.txt) into all the folders that store the encrypted files.

The message mentioned by _readme.txt asking for the random os really similar to the notifications offered by other ransomware threats belonging to the DJVU family. The caution basically shows that the data has been encrypted and the only solution to get access to it is to use an unique standalone key. Regretfully, this statement is absolutely real.

The method to encrypt the files used by Krusop is not entirely researched. However, there is no doubt that each computer owner might be provided an unique decryption key, which is absolutely distinct. It is extremely difficult to recover the data without the proper key in place.

“Don’t worry, you can return all your files!”, from _readme.txt message:

Don't worry, you can return all your files! virus

One more peculiarity of the Krusop virus is that the users are unable to get access to the key. The decrypting key is hosted on an unique server under the complete control by the criminals who have released the Krusop infection into the web. In order to obtain the key and restore the essential data, the users are told to connect with the frauds via e-mail or by telegram and to pay the ransom in the quantity of $980.

The message likewise says that individuals should contact the Krusop authors within 72 hours upon the moment of the data encryption. The alert suggests that by doing so individuals will acquire a 50% discount rate, for that reason, the ransom amount drops down to $490.

No matter what the quantity of the ransom is, we strongly recommend that you do not pay the ransom. There is no assurance that these online scoundrels will keep their promises, so they might not care at all what the victims feel about the encryption, even when the amount of the ransom is gotten into their accounts. Hence, paying ransom frequently does not result in an effective recovery. So, the users may simply lose their money for absolutely nothing.

Likewise, we urge you not to get in touch with the scams as they advise. Do not transfer cash into their wallets. There are no applications that might crack the Krusop ransomware or restore the data for free. For that reason, the only appropriate decision is to restore the information from possible backups (if available).

Virus Summary

NameKrusop Ransomware
File Extensionkrusop
Short DescriptionThe ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
SymptomsFile encryption by the ransomware is performed by means of the AES-556 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .krusop extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLondec, Brusaf, Masok
Removal Tool   GridinSoft Anti-Malware

Do not forget that the Internet is now loaded with infections comparable to the Krusop virus. For example, this particular threat is essentially similar to Brusaf and other ransomware-type infections. These destructive energies have been developed in order to secure the important data and express the need for the users to pay the ransom. All these infections utilize the similar algorithm to generate the particular key for successful data decryption.

Unless the Krusop ransomware is still under the development process or has actually got some hidden bugs, it is not possible to restore the data manually. Therefore, the only working option to prevent the loss of your essential data is to frequently preserve up-to-date backups of all your important files.

Another crucial piece of suggestions is to store the backups on unique storage not linked to your main device. For instance, you might keep it on the USB Flash Drive, or some external hard disk, or by using the cloud data storage services. Keeping the backups on your regular drive is extremely dangerous, considering that the backup might also be encrypted by the Krusop infection.

Leaks for the Krusop ransomware attack.

Krusop utilizes many paths to penetrate the susceptible computers. It is not particular what specific method was utilized in your case, however, the intrusion may happen through the following channels:

  • bundling with third-party programs, primarily free apps;
  • spam e-mails from the unidentified senders;
  • websites offering complimentary hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Krusop ransomware may camouflage itself as some genuine application, for instance, through the deceptive alerts requiring setup of some software application upgrade. This is the most typical technique utilized by the frauds to inject the Krusop virus files into the system. By doing this users partly take part in its setup, without clearly comprehending the threat.

Additionally, the frauds might send out unsolicited spam e-mail with tricky notifies encouraging individuals to open suspicious attachments or click on some download links, for instance, those encouraging individuals to open particular photos, text files, tax documents and other info.

No doubt, opening these files or clicking on the harmful links may essentially harm the system. Fake Adobe Flash Player update notifications may cause the Krusop ransomware infiltration. Likewise, downloading the broken software may in addition consist of the ransomware installer. The last however not the least, installation of Krusop might occur through some Trojan horses that may be installed stealthily into the system and without the user’s direct consent and even permission.

Preventing the Krusop ransom virus injection.

Of course, there is no outright assurance that your computer will be constantly free of any malware attacks, however, we wish to share some useful pointers with you to make it more secure. Make certain to pay very close attention while searching the web and especially while downloading cost-free programs. Do not open any suspicious email accessories, particularly if the sender is not understood to you.

Do not forget that certain freeware installer may also include some other additional apps in the bundle. These extra applications may be very destructive. It is of utmost value to keep your anti-virus software and your os in basic to be always correctly upgraded.

It is quite sensible that downloading pirated software is unlawful, nevertheless, furthermore, such unapproved software application usage may also bring severe damage to your system. Thus, do not download any broken programs. Plus, the reality that your existing anti-virus did not protect the system from the Krusop ransomware is a great reason for you to reassess your options and change to another program that can render the protecting functions on a better level.

Below please find the quotation from the Krusop text file:

 Don't worry, you can return all your files!
 All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
 The only method of recovering files is to purchase decrypt tool and unique key for you.
 This software will decrypt all your encrypted files.
 What guarantees you have?
 You can send one of your encrypted file from your PC and we decrypt it for free.
 But we can decrypt only 1 file for free. File must not contain valuable information.
 You can get and look video overview decrypt tool:
 Price of private key and decrypt software is $980.
 Discount 50% available if you contact us first 72 hours, that's price for you is $490.
 Please note that you'll never restore your data without payment.
 Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.
 To get this software you need write on our e-mail:
 Reserve e-mail address to contact us:
 Our Telegram account:

Screenshot of files with “.krusop” extension added by the virus:”

Krusop Ransomware - encrypt files with .krusop extension

Use GridinSoft Anti-Malware to remove Krusop ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can get GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

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About Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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