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Remove Derp ransomware (Virus Removal Instructions) - Improved Guide

removal by Lucia Danes - - | Type: Ransomware

Derp ransomware – the 176th version of the Djvu ransomware that is currently undecryptable

Derp ransomware virus 

Derp ransomware, discovered by Michael Gillespie,[1] is one of the latest variants of the Djvu ransomware family that promotes file decryption by using a unique algorithm. Emsisoft reported[2] that they have released the STOP/Djvu decryption software that works for Djvu ransomware variants that have been released earlier than August 2019, so Derp virus still remains undecryptable as it uses a different decryption tool than its previous ancestors that were released before August. However, the activity principle is the same – alterings of the Windows Registry/Task Manager, encryption by adding a specific appendix (.derp in this case), ransom demands from $490 to $980 via the _readme.txt message.

Name Derp ransomware
Type Ransomware
Family Djvu ransomware (STOP virus)
Version number Research shows that this malware is the 176th variant of the Djvu category
Appendix Once files are locked with a unique cipher, they end up with the .derp appendix
Ransom message The malware displays the _readme.txt message where crooks urge for $490 as a starter price if the money is transferred in 3 days and $980 if the victim goes over the time limit
File location Malicious executables might be found in the %LocalAppData% or %AppData% directories. Additionally, the Windows Task Manager and Registry might also be filled with suspicious entries/files
Additional malware STOP ransomware variants (this includes Derp virus) are known for distributing AZORult trojan
Discoverer Michael Gillespie has announced his findings on Twitter social network
Elimination tip Delete the ransomware virus automatically (find instructions at the end of this article). Afterward, try using Reimage Reimage Cleaner to scan the computer for damage

During installation, Derp ransomware will supposedly drop a malicious executable in the %LocalAppData% or %AppData% folder that is responsible for finding decryptable files on your Windows computer. Additionally, the malware can delete the Windows hosts file to prevent the user from accessing security-related forums and networks.

Nevertheless, you will supposedly find malicious entries and files in the Task Manager and Windows Registry added by Derp ransomware. This way the malware ensures that it will be automatically booted within every computer startup process. Additionally, some dropped entries might allow the malware to avoid being detected by security software.

Derp ransomware
Derp ransomware is the 176th version released by Djvu virus developers
Furthermore, Derp ransomware might target Shadow Copies of the encrypted tada in order to harden the decryption process for the users themselves. For this purpose, the malware launches a module that runs specific PowerShell commands and permanently deletes the Shadow Volume Copies from the computer system.

If you have taken a good look to the _readme.txt ransom note, you will see that Derp ransomware developers are trying to threaten you that there is no other option of recovering your files instead of paying the demanded price:

ATTENTION!

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:
https://we.tl/t-sTWdbjk1AY
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:
gorentos@bitmessage.ch

Reserve e-mail address to contact us:
gerentoshelp@firemail.cc

Your personal ID:

The criminals urge for $490 if the ransom price is transferred in a three-day time period. However, if the victim is too late and decides to pay after 72 hours, he has to now transfer a doubled price. Derp ransomware urges a pretty big price here and our experts say that it is not worth paying such amount of money while there is a big risk of scamming.

The crooks also provide gorentos@bitmessage.ch, gorentoshelp@firemail.cc email addresses as a way to contact them. We suggest avoiding any contact possible and going straight for Derp ransomware removal. If you get scammed, it would be almost impossible to recover your money as hackers often urge prices in Bitcoin or another cryptocurrency that guarantees full anonymity.

Derp malware
Derp malware is a ransomware virus that urges for $490 if the victim transfers the money in 3 days
One more reason why you should remove Derp ransomware ASAP is that the malware can distribute the AZORult Trojan horse. All STOP ransomware viruses might be capable of injecting this malicious threat for money swindling, private information stealing, or other illegitimate and damaging purposes.

After Derp ransomware is gone, you can try fixing the damage with software such as Reimage Reimage Cleaner . However, note that the tool does not decrypt data. For that, travel to the end of the article and choose a method to try. Also, you can purchase DrWeb's Rescue Pack for $150 that includes decryption software that might be capable of recovering some data and also two full years of antimalware protection.

Vulnerable RDP configuration allows malware installation

Security experts from LosVirus.es[3] state that RDPs which include weak passwords or no password security at all are a very nice target for bad actors. These people hack the RDP[4] (for example, TCP port 3389) and connect to the targeted computer system by remote technique.

Even though this ransomware distribution method is a very popular one, there are other techniques that are not less popular. Criminals often drop questionable email messages to the user's inbox or spam sections. Sometimes, the crooks pretend to be from official shipping companies such as FedEx/DHL, banking firms, or healthcare organizations in order to give the look of a trustworthy email.

Afterward, users are encouraged to click on a particular hyperlink or open an infectious attachment where ransomware is hiding. Nevertheless, this still is not it. Hackers are capable of distributing malware via many other different sources! Unsecured p2p networks, outdated software, exploit kits, fake Flash Player updates, infectious downloading links and ads, gambling networks, porn sources – all these places are potential ransomware holders.

Avoiding ransomware and preventing system damage

Once you have learned about ransomware distribution techniques, it is about time to learn how to avoid these dangerous cyber threats. First of all, you should purchase reliable antivirus protection. You can find various user and expert reviews in forums and security pages where you might be able to choose the right tool for you. When you have the program, do not forget to update it when official upgrades are released.

Continuously, learn how to manage your email box. Delete all messages that fall to your spam section but also be careful with letters that appear in the inbox. Evaluate the expectancy of the email, check out the sender, and search the entire content for grammar/style mistakes. If you have a questionable feeling of the email, better delete it as any reputable company would manage to contact you in other ways, e.g. mobile phone.

Furthermore, avoid downloading movies and video clips from sources such as The Pirate Bay, eMule, and other torrenting networks as these websites provide software cracks that might be filled with dangerous viruses, including ransomware. Also, do not perform any software updates you are not aware of, keep all of your programs regularly upgraded, and keep a fair distance from all questionable online sources.

Derp ransomware removal guidelines

Derp ransomware removal needs to be performed as soon as you find .derp files on your computer system. Eliminating the virus on your own is not a possibility here. Keep in mind that reputable antimalware software is necessary if you are looking forward to a safety elimination process.

After you remove Derp ransomware, you can try downloading one of these tools: Reimage Reimage Cleaner , SpyHunter 5Combo Cleaner, or Malwarebytes. This software might help you to fix the damage that has been brought by the malware. Additionally, below you will find some data recovery techniques that might help you with file restoring.

When Derp virus is gone, you should start taking care of your future data. Purchase and USB flash drive and keep your data or at least copies of important files stored on the remote device in case of a repeated malware attack in the future.

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What to do if failed?
If you failed to remove virus damage using Reimage Reimage Cleaner, submit a question to our support team and provide as much details as possible.
Reimage Reimage Cleaner has a free limited scanner. Reimage Reimage Cleaner offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage Cleaner, try running Combo Cleaner.

To remove Derp virus, follow these steps:

Remove Derp using Safe Mode with Networking

Boot your Windows computer to Safe Mode with Networking. Focus on the process with the help of these instructing guidelines.

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Derp

    Log in to your infected account and start the browser. Download Reimage Reimage Cleaner or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Derp removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Derp using System Restore

Launch System Restore on your machine to reverse all bogus changes. Use the below-provided instructions if you need some help with this procedure.

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Derp. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage Reimage Cleaner and make sure that Derp removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Derp from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by Derp, you can use several methods to restore them:

Employ Data Recovery Pro for file restoring purposes.

Use this software to restore some of the files and documents that were locked by the ransomware virus.

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Derp ransomware;
  • Restore them.

Use Windows Previous Versions feature for data recovery tasks.

If you have enabled System Restore in the past, you can try employing this technique for file restoring purposes.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Try using Shadow Explorer for data restore:

You can use this method for the recovery of your files, however, it might not work if the ransomware virus eliminated Shadow Copies of the encrypted files.

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Sadly, the official decryptor for this ransomware version has not been developed yet.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Derp and other ransomwares, use a reputable anti-spyware, such as Reimage Reimage Cleaner , SpyHunter 5Combo Cleaner or Malwarebytes

About the author

Lucia Danes
Lucia Danes - Virus researcher

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