My Decryptor (Magniber) Ransomware

Also Known As: My Decryptor virus
Distribution: Moderate
Damage level: Severe

My Decryptor ransomware removal instructions

What is My Decryptor?

My Decryptor (also known as Magniber) is a ransomware-type virus discovered by malware security researcher, Michael Gillespie. Once infiltrated, My Decryptor encrypts stored files and appends filenames with an extension comprising seven random characters. For instance, "sample.jpg" might be renamed to a filename such as "sample.jpg.gkelhoh". At this moment cyber criminals are using ".ypkwwmd", ".ndpyhss", ".wmfxdqz", ".axlgsbrms", ".nhsajfee", ".mqpdbn", ".damdzv", ".qmdjtc", ".mftzmxqo", ".demffue", ".dxjay", ".fbuvkngy", ".xhspythxn", ".dlenggrl", ".skvtb", “.vbdrj”, “.fprgbk”, ".ihsdj" or ".kgpvwnr" extensions for encrypted files. After successfully encrypting files, My Decryptor creates a text file ("_HOW_TO_DECRYPT_MY_FILES_[random_characters]_.txt", "READ_ME_FOR_DECRYPT_[victim’s id].txt") or READ_ME.txt, placing it on the desktop.

The text file contains a message stating that files are encrypted and can only be restored using a unique decryption tool together with a unique (private) key. Unfortunately, this information is accurate. It is currently unknown which cryptography My Decryptor ransomware uses, however, as the message mentions a "private" key, it is safe to assume that the encryption is asymmetric. Therefore, two keys (public [encryption] and private [decryption]) are generated. Cyber criminals store the private key on a remote server. Decryption without this key is impossible. Victims are encouraged to pay a ransom in exchange for the key and decryption tool - they are instructed to visit My Decryptor's website to receive these assets. The cost of decryption is .2 Bitcoin (currently equivalent to ~$1145). It is also stated that the ransom must be paid within five days, after which the cost will double. Be aware that cyber criminals cannot be trusted. Research shows that these people often ignore victims, once payments are submitted. Therefore, paying does not guarantee decryption of your files and there is a high probability that you will be scammed. As well as losing your money, you will support cyber criminals' malicious businesses. Therefore, we strongly advise you to ignore all requests to pay any ransoms. Unfortunately, there are currently no tools capable of restoring files encrypted by My Decryptor. The only solution is to restore your files/system from a backup.

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

My Decryptor decrypt instructions

My Decryptor shares many similarities with dozens of other ransomware-type viruses. The list of examples includes (but is not limited to) Anubi, BugWare, Asasin, and SyncCrypt. These viruses are developed by different criminals, however, their behavior is identical - all encrypt files and makes ransom demands. The only major differences are size of ransom and type of encryption algorithm used. Research shows that, unfortunately, most of these viruses employ algorithms (foe example, AES, RSA, etc.) that generate unique decryption keys. Therefore, unless the malware contains bugs/flaws or is not fully developed, file decryption manually (without involvement of developers - contacting these people is not recommended) is impossible. For these reasons, ransomware-type viruses such as My Decryptor present a strong case for maintaining regular data backups.

How did ransomware infect my computer?

Ransomware-type viruses are proliferated in various ways, however, the most common are: spam emails, third party software download sources, fake software update tools, and trojans. Spam emails often contain malicious attachments (such as JavaScript files, MS Office documents, etc.) that, once opened, download and install malware. Unofficial software distribution sources (peer-to-peer [P2P] networks, free file hosting websites, freeware download websites, etc.) often present malicious executables as legitimate software, thereby tricking users into downloading and running malware . Fake software updaters exploit outdated software bugs/flaws to infect the system. Trojans are the simplest ones - they merely open "gates" for other malware to infiltrate the system.

Threat Summary:
NameMy Decryptor virus
Threat TypeRansomware, Crypto Virus, Files locker
SymptomsCan't open files stored on your computer, previously functional files now have a different extension, for example my.docx.locked. A ransom demanding message is displayed on your desktop. Cyber criminals are asking to pay a ransom (usually in bitcoins) to unlock your files.
Distribution methodsInfected email attachments (macros), torrent websites, malicious ads.
DamageAll 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 My Decryptor 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?

To prevent ransomware infections, be very cautious when browsing the Internet. Never open files attached to emails sent from suspicious addresses. These emails should be deleted without reading. Furthermore, download your software from official sources only and, preferably, using a direct download link (third party download/installation tools often include malicious programs). Keep installed programs updated, however, note that criminals proliferate malware via fake updaters. Therefore, updating software via third party tools is very risky. Using a legitimate anti-virus/anti-spyware suite is essential. The main reasons for computer infections are poor knowledge and careless behavior - the key to computer safety is caution.

Text presented within My Decryptor text file:

Your files are NOT damaged! Your files are modified only. This modification is reversible.
The only 1 way to decrypt your files is to receive the private key and decryption program.
Any attempts to restore your files with the third-party software will be fatal for your files!
To receive the private key and decryption program follow the instructions below:
1. Download "Tor Browser" from hxxps:// and install it.
2. In the "Tor Browser" open your personal page here:
Note! This page is available via "Tor Browser" only.
Also you can use temporary addresses on your personal page without using "Tor Browser":
Note! These are temporary addresses! They will be available for a limited amount of time!

Screenshot of My Decryptor Tor website:

My Decryptor website

Text presented within this website:

Your documents, photos, databases and other important files have been encrypted!
WARNING! Any attempts to restore your files with the third-party software will be fatal for your files! WARNING!
To decrypt your files you need to buy the special software - "My Decryptor"
All transactions should be performed via BITCOIN network.
Within 5 days you can purchase this product at a special price: BTC 0.200 (~ $1141)
After 5 days the price of this product will increase up to: BTC 0.400 (~ $2282)

How to get "My Decryptor"?
1. Create a Bitcoin Wallet (we recommend
2. Buy necessary amount of Bitcoins
3. Send BTC 0.200 to the following Bitcoin address:
4. Control the amount transaction at the "Payments History" panel below
5. Reload current page after the payment and get a link to download the software
At the moment we have received from you: BTC 0.000 (left to pay BTC 0.200)

Screenshot of files encrypted by My Decryptor ransomware (7 random letters extension):

Files encrypted by My Decryptor

Update 3 April, 2018 - Security researchers from AhnLab have released a free decrypter for this ransomware. Victims can download it HERE.

My Decryptor ransomware removal:

Instant automatic removal of My Decryptor 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 My Decryptor 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 My Decryptor 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 My Decryptor 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 My Decryptor 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 My Decryptor 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 My Decryptor, 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 My Decryptor ransomware.

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 My Decryptor 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.

Our malware removal guides are free. However, if you want to support us you can send us a donation.

Removal Instructions in other languages
Malware activity

Global virus and spyware activity level today:

Medium threat activity

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

QR Code
My Decryptor virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of My Decryptor virus on your mobile device.
We Recommend:

Get rid of My Decryptor virus today:

▼ REMOVE IT NOW with Spyhunter

Platform: Windows

Editors' Rating for Spyhunter:
Editors ratingOutstanding!

[Back to Top]

Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.