Infected with Katyusha Ransomware? Need to decrypt your files?

What is Katyusha Ransomware

Katyusha there is another cryptovirus that encrypts user data. File formats that are subject to encryption may be different, for example, Office documents, audio and video files, other multimedia and so on. Of course, after encryption, these files become unusable for further use. Moreover, this virus, like its counterparts, changes the file extension to .katyusha. Initially, this cryptovirus targets English-speaking users. However, according to our latest data, this virus has spread throughout the world. After penetrating the computer and subsequent encryption, it creates a special note file _how_to_decrypt_you_files.txt that contains the redemption data:

Katyusha Ransomware

=======================HOW TO DECRYPT YOU FILES=======================
All your documents, photos, databases and other important personal files were encrypted!!
Please send 0.5 bitcoins to my wallet address: 3ALmvAWLEothnMF5BjckAFaKB5S6zan9PK
If you paid, send the ID and IDKEY to my email: kts2018@protonmail.com
I will give you the key and tool
If there is no payment within three days
we will no longer support decryption
If you exceed the payment time, your data will be open to the public download
We support decrypting the test file.
Send two small than 2 MB files to the email address: kts2018@protonmail.com
Your ID:85675
Your IDKEY:
==============================================
cafJTqaM8EINKtrYNtkKxZAPe5iS8x7aFFmNb81wVfW4R2VtOfkvlkbOZlmINbF
unjMJz9ZcdcQdF7j/vKYULJZVdSPJW6WlG14jW2sYONpAunj7j/MG14jW2Jz9Z
o4flK/x+zOAHUpAunjMJz9ZcdcQdG14jW4jW22FCM+u/WmtVYe/xnasB4jW2
Swm8fLeYy7EOUK5bUlbRW6WlG14jW2sY9ERRsKKHFauqKeqrQMxCN+Sbrj6
G14jWmNb8cQdF7j/vKY1wVfcQdG14jWlG14jW2sY92G14jW2rsY9Wh4jW22
4+UIc2LMCV68n±GwC+Z7Yg=
==============================================
Payment site https://www.bithumb.com/
Payment site http://www.coinone.com/
Payment site https://www.gopax.co.kr/
Payment site http://www.localbitcoins.com/
Officail Mail:kts2018@protonmail.com

The note indicates the amount of the ransom in the amount of 0.5 Bitcoin and the address on which you need to throw money. Cryptocurrencies were not chosen by chance, since this is how attackers can escape punishment and prosecution by the law. Of course, we do not advise you to pay anything a fraudster, as it is a waste of money. We strongly recommend that you try to remove it and decrypt your files.

Update: Use following service to identify the version and type of ransomware you were attacked by: ID Ransomware. If you want to decrypt your files, please follow our instruction below or, if you have any difficulties, please contact us: submit@securitystronghold.com. We really can help to decrypt your files.

How Katyusha infected your PC

In most cases, crypto viruses, in particular Katyusha, come through unsafe network settings. It is also worth noting that most users neglect antivirus software. This may come as an attachment to a spam mailing list or a false software update. Anyway, you need to remove Katyusha. To do this, read our recommendations, which are listed below.

First of all, don’t panic. Follow these easy steps below.

1. Start your computer in Safe Mode with networking. To do that, restart your computer before your system starts hit F8 several times. This will stop system from loading and will show Advanced boot options screen. Choose Safe mode with networking option from the options list using up and down arrows on your keyboard and hit Enter.
2. Log in to the system infected with the Katyusha virus. Launch your Internet browser and download a reliable anti-malware program and start a full system scan. Once the scan is complete, review scan results and remove all entries detected.

Recommended Solution:

Norton – fully removes all instances of Katyusha – files, folders, registry keys.

 

Download Norton

You may find more detailed information about antivirus products in our article – Top 5 Antivirus Software for Windows

Restore your files using shadow copies

stellar-data-recovery

  1. Download and run Stellar Data Recovery.
  2. Select type of files you want to restore and click Next.
  3. Select the drive and folder where your files are located and date that you want to restore them from and press Scan.
  4. Once the scanning process is done, click Recover to restore your files.
Download Stellar Data Recovery

Step 2: Remove following files and folders of Katyusha:

Related connections or other entries:

No information

Related files:

No information

How to decrypt files infected by Katyusha?

You can try to use manual methods to restore and decrypt your files.

Decrypt files manually

Restore the system using System Restore

system restore

Although latest versions of Katyusha remove system restore files, this method may help you to partially restore your files. Give it a try and use standard System Restore to revive your data.

  1. Initiate the search for ‘system restore
  2. Click on the result
  3. Choose the date before the infection appearance
  4. Follow the on-screen instructions

Roll the files back to the previous version

Previous versions can be copies of files and folders created by Windows Backup (if it is active) or copies of files and folders created by System Restore. You can use this feature to restore files and folders that you accidentally modified or deleted, or that were damaged. This feature is available in Windows 7 and later versions.

windows previous versions

  1. Right-click the file and choose Properties
  2. Open the Previous Version tab
  3. Select the latest version and click Copy
  4. Click Restore

Protect your computer from ransomware

hitmanpro alert with cryptoguard

Most modern antiviruses can protect your PC from ransomware and crypto-trojans, but thousands of people still get infected. There are several programs that use different approach t protect from ransomware and lockers. One of the best is HitmanPro.Alert with CryptoGuard. You may already know HitmanPro as famous cloud-based anti-malware scanner. Check out ultimate active protection software from SurfRight.

Download HitmanPro.Alert with CryptoGuard

Written by Rami Douafi

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