How to avoid data loss caused by Decrypme ransomware?

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

Decrypme ransomware removal instructions

What is Decrypme?

Decrypme is a new variant of MedusaLocker ransomware. This malicious program was discovered by dnwls0719. Like most ransomware-type programs, Decrypme is designed to prevent victims from accessing their files by encrypting them. Typically, it is impossible to decrypt files without the right tools (decryption software and/or keys). In order to get them, victims are forced to pay a ransom. Instructions on how to decrypt files encrypted by Decrypme are provided in the "HOW_TO_OPEN_FILES.html" file. Also, this ransomware appends the ".decrypme" extension to all encrypted files. For instance, it renames a file named "1.jpg" to "1.jpg.decrypme", and so forth.

As stated in the "HOW_TO_OPEN_FILES.html" file that gets opened in a browser window, it is possible recover (decrypt) encrypted files, however, it can be done with a decryption tool that only developers of Decrypme have. To contact these cyber criminals victims have to write an email to mrromber@cock.li or mrromber@tutanota.com. Once contacted, they should provide instructions on how to make a payment. Victims are asked to provide a personal ID and offered a free decryption of one file that can be attached to the email letter. Also, they are warned not to try to decrypt files by themselves (using third party tools) because it will cause permanent data loss. The biggest problem with having files encrypted by ransomware is that it is impossible to decrypt them without the right tools and they can be received only from cyber criminals who designed it. However, it is never a good idea to trust (pay) them, they often do not send decryption keys and/or software even if victims meet all their demands. Typically, the only way to recover files is to restore them from a backup that was created before ransomware attack. Also, it is worth mentioning that removal of such malware only prevents it from causing further encryptions. All files that were encrypted remain encrypted.

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

Decrypme decrypt instructions

Most ransomware-type programs are quite similar, they are designed to lock (encrypt) data and provide victims with instructions on how to pay a ransom and other details. Some examples of other software of this type are JayTHL, Nakw and Xda. The two main differences usually are price of a decryption software and/or key and cryptographic algorithm (symmetric or asymmetric) that is used to block access to data. Unfortunately, most of these programs perform encryptions that are impossible to 'crack'. In other words, victims cannot decrypt their files without tools that only cyber criminals (developers of a particular ransomware) have. Typically, the only way to recover files for free is to restore them from a backup. That is why it is important to always have data backed up and keep it stored on a some remote server (like Cloud) or unplugged storage device.

How did ransomware infect my computer?

Several most commonly used ways to proliferate malicious programs are spam campaigns, Trojans, unreliable file and software download channels, unofficial software activation tools and fake updaters. When cyber criminals use spam campaigns, they send emails that contain malicious attachments. Usually they attach files such as Microsoft Office or PDF documents, archive files like ZIP, RAR, executable files (like .exe) and JavaScript files. Their main goal is to trick recipients opening a malicious file that, once opened, installs high-risk malware. Trojan is a type of malware that causes chain infections: when installed these programs install other malicious programs. Examples of unreliable software download sources are websites that offer to download free software, free file hosting pages, Peer-to-Peer networks like torrent clients, eMule, third party downloaders, unofficial pages, and other download sources of this kind. If cyber criminals use them to spread malware, they upload malicious files that are disguises as legitimate, harmless. People who open files downloaded from/through sources of this kind often cause installation of malware like ransomware by themselves. Unofficial software activation ('cracking') tools supposed to bypass paid activation of licensed software. Nevertheless, these tools are often used to spread ransomware and other malware by installing instead of activating already installed software. Unofficial updating tools infect operating systems by installing malicious programs instead of updating outdated software, or by exploiting bugs, flaws of already installed software that is out-of-date.

Threat Summary:
Name Decrypme virus
Threat Type Ransomware, Crypto Virus, Files locker
Encrypted Files Extension .decrypme
Ransom Demanding Message HOW_TO_OPEN_FILES.html
Cyber Criminal Contact mrromber@cock.li, mrromber@tutanota.com
Detection Names AVG (FileRepMetagen [Malware]), BitDefender (Gen:Heur.Ransom.Imps.1), ESET-NOD32 (A Variant Of Win32/Filecoder.MedusaLocker.C), Kaspersky (Trojan.Win32.DelShad.bmq), Full List Of Detections (VirusTotal)
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.
Removal

To eliminate Decrypme 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?

It is not recommended to download (or install) any programs or files using third party software downloaders, installers and other similar tools (other examples are provided above). The safest way to do that is to use official and trustworthy websites. It is also important to update installed software through implemented functions or tools that are designed by official developers. Website links and/or files that are included in irrelevant emails should not be opened. Typically, those emails are being sent from unknown, suspicious addresses and disguised as important, official. Licensed (paid) software should be activated properly, it is not legal to use third party ('cracking') tools for that and they often cause damage to computers by installing malware. Also, we recommend to scan operating system with a reputable antivirus or anti-spyware software regularly and always keep it up-to-date. If your computer is already infected with Decrypme, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Appearance of "HOW_TO_OPEN_FILES.html" file (GIF):

decrypme ransomware appearance in gif

Text presented in this file:

All your data are encrypted!
What happened?
Your files are encrypted, and currently unavailable.
You can check it: all files on you computer has new expansion.
By the way, everything is possible to recover (restore), but you need to buy a unique decryptor.
Otherwise, you never cant return your data.

For purchasing a decryptor contact us by email:
mrromber@cock.li
If you will get no answer within 24 hours contact us by our alternate emails:
mrromber@tutanota.com

What guarantees?
Its just a business. If we do not do our work and liabilities - nobody will not cooperate with us.
To verify the possibility of the recovery of your files we can decrypted 1 file for free.
Attach 1 file to the letter (no more than 10Mb). Indicate your personal ID on the letter:
-
Attention!
- Attempts of change files by yourself will result in a loose of data.
- Our e-mail can be blocked over time. Write now, loss of contact with us will result in a loose of data.
- Use any third party software for restoring your data or antivirus solutions will result in a loose of data.
- Decryptors of other users are unique and will not fit your files and use of those will result in a loose of data.
- If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause just we have the private key.

Screenshot of files encrypted by Decrypme (".decrypme" extension):

Files encrypted by Decrypme

Decrypme ransomware removal:

Instant automatic removal of Decrypme 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 Decrypme 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 Decrypme 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 Decrypme 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 Decrypme 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 Decrypme 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 Decrypme, 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 Decrypme 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 Decrypme 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 pcrisk.com 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 virus and spyware activity level today:

Medium threat activity
Medium

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

QR Code
Decrypme 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 Decrypme virus on your mobile device.
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Platform: Windows

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