How to uninstall CryptoPatronum ransomware?

Also Known As: CryptoPatronum virus
Distribution: Low
Damage level: Severe

CryptoPatronum ransomware removal instructions

What is CryptoPatronum?

CryptoPatronum was discovered by Amigo-A. Like most programs of this type, this ransomware is designed to block access to data by encrypting it. Also, it changes names of all encrypted files by adding the "" email address and appending the ".enc" extension to their filenames. For example, CryptoPatronum renames "1.jpg" to "", and so on. Additionally, it creates a text file (ransom note) named "HOW TO RECOVER ENCRYPTED FILES.txt".

As stated in the "HOW TO RECOVER ENCRYPTED FILES.txt" text file, victims should send cyber criminals an email with the appointed personal identifier (ID) in it to Also, they can attach up to three encrypted files to it, CryptoPatronum's developers offer to decrypt those files for free. However, the rest of encrypted files can be decrypted only with a decryption software and key that can be purchased for 1 BTC (Bitcoin) or 50 ETH (Ethereums). A payment must to be made by transferring cryptocurrency to one of the provided addresses. There are no free tools that could be capable of decrypting data encrypted by CryptoPatronum, at least not at the moment. In other words, these cyber criminals are the only ones who have tools that can decrypt files encrypted by their ransomware. However, it is very common that cyber criminals do not send decryption tools even if victims pay them. There are many cases where victims who trusted ransomware developers got scammed. Since there are no free tools that could decrypt files encrypted by CryptoPatronum, the only way to recover them without losing money is to restore them from a backup. Also, it is worth mentioning that files remain encrypted even after uninstallation of ransomware. By removing ransomware from the operating system victims only prevent it from causing further encryptions.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

CryptoPatronum decrypt instructions (HOW TO RECOVER ENCRYPTED FILES.txt)

AlphaBetaCrypt, LIVE and Reha are a couple of examples of other ransomware. What most programs of this type have in common is that they make sure that victims could not access their data by encrypting it and create and/or display a ransom note. Typically, the only main differences are price of a decryption software and/or key and cryptographic algorithm (symmetric or asymmetric) that ransomware uses to encrypt files. In most cases it is impossible to decrypt file without having to use tools that can be purchased only from cyber criminals who designed ransomware. It can be avoided only if ransomware is not finished (has bugs, flaws) and/or if a victim has a data backup. Therefore, we recommend to always have a backup and keep it on a remote server and/or unplugged storage device.

How did ransomware infect my computer?

Typically, cyber criminals spread ransomware and other malicious programs by using one of the following ways: through spam campaigns, Trojans, untrustworthy software download channels, software 'cracking' tools and fake software updaters. One of the most common ways to proliferate malware is to send emails that contain malicious attachments (or web links that are designed to download malicious files). In most cases cyber criminals attach malicious files such as Microsoft Office documents, archive files (like ZIP, RAR), executable files (like .exe), PDF documents and JavaScript files. Cyber criminals send such emails with one purpose: to trick recipients into opening the attached or downloaded file. When opened, that file infects operating system with malware. Furthermore, Trojans are malicious programs that, if installed on a computer, open backdoors for other programs of this kind. Simply said, they cause chain infections by installing other malware. Untrustworthy software download sources like free file hosting, freeware download websites, Peer-to-Peer networks (like torrent clients, eMule), unofficial pages, etc., can be used to distribute malware too. Quite often cyber criminals use them to host malicious files. By downloading and opening files through sources of this kind people risk to cause installation of malware by themselves. Software 'cracking'/unofficial activation tools are programs that some people use when they want to activate licensed software for free. However, these tools often are designed to install some malware and do not activate any legitimate software. Fake software updaters infect systems by exploiting vulnerabilities of outdated software that is installed on the operating system or by simply installing malicious software instead of updates, fixes.

Threat Summary:
Name CryptoPatronum virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .enc
Ransom Demanding Message HOW TO RECOVER ENCRYPTED FILES.txt
Ransom Amount 1 Bitcoin/50 Ethereums
Crypto Wallet Addresses 17mriroop9nWyNT8hoHS1XodEucBm9AgMq (BTC), 0xD994268684e694C81C8C7214E4fc4Ca792AD4B3A (ETH)
Cyber Criminal Contact
Detection Names Avast (Win32:Trojan-gen), BitDefender (Generic.Ransom.Hiddentear.A.BAAECAB7), ESET-NOD32 (A Variant Of MSIL/Filecoder.FU), Kaspersky (HEUR:Trojan-Ransom.MSIL.Agent.gen), Full List Of Detections (VirusTotal)
Rogue Process Name crss
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.

To eliminate CryptoPatronum virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

We strongly recommend not to open attachments (or web links) that are attached to irrelevant emails, especially if they are received from unknown, suspicious addresses. It is worth mentioning that these emails usually are disguised as important, official, and so on. Also, it is important to update and activate installed software through implemented functions or tools that are designed by official developers. Third party software like unofficial activation tools are not legal. Files and programs should be downloaded only from official websites and via direct download links. None of the sources that are mentioned in the paragraph above should be trusted. It is any less important to regularly scan the operating system for threats with a reputable anti-virus or antispyware suite and allways remove detected threats as soon as possible. If your computer is already infected with CryptoPatronum, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in "HOW TO RECOVER ENCRYPTED FILES.txt" text file :

Your files are now encrypted!
Your personal identifier:
All your files have been encrypted due to a security problem with your PC.
Now you should send us email with your personal identifier.
This email will be as confirmation you are ready to pay for decryption key.
You have to pay for decryption in Bitcoins. The price depends on how fast you write to us.
After payment we will send you the decryption tool that will decrypt all your files.
Contact us using this email address:
Free decryption as guarantee!
Before paying you can send us up to 3 files for free decryption.
The total size of files must be less than 10Mb (non archived), and files should not contain
valuable information (databases, backups, large excel sheets, etc.).
For decrypt all of files you must transfer 1 (one) BTC or 50 (fifty) ETH to this requisites:
Bitcoin address: 17mriroop9nWyNT8hoHS1XodEucBm9AgMq
Ethereum address: 0xD994268684e694C81C8C7214E4fc4Ca792AD4B3A
You should provide payment details(payment time, payment address or transaction link (hxxps:// via email
How to obtain Bitcoins, Ethereum?
  * The easiest way to buy bitcoins is and sites. You have to register, click
    'Buy bitcoins', and select the payment method:
  * Also you can buy bitcoins on Binex:      hxxps://
  * Also you can find other places to buy Bitcoins and beginners guide here:
    * Do not rename encrypted files.
  * Do not try to decrypt your data using third party software, it may cause permanent data loss.
   * Decryption of your files with the help of third parties may cause increased price
     (they add their fee to our) or you can become a victim of a scam.

Screenshot of files encrypted by CryptoPatronum (".enc" extension):

Files encrypted by CryptoPatronum ransomware (.enc extension)

CryptoPatronum malicious process running in Task Manager as "crss":

cryptopatronum malicious crss process

CryptoPatronum ransomware removal:

Instant automatic removal of CryptoPatronum virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of CryptoPatronum virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the CryptoPatronum virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the CryptoPatronum ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining CryptoPatronum ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of CryptoPatronum are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by CryptoPatronum, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as CryptoPatronum ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites, and Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove CryptoPatronum ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
CryptoPatronum virus QR code
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Platform: Windows

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