Derp ransomware is a crypto virus that belongs to STOP family. It obstructs victims from accessing their personal and valuable files. Malware author demand to pay the ransom in exchange for a decryption code that will allegedly help to restore all encrypted files.
Latest variant of popular ransomware STOP or DJVU has been spotted and it is called Derp virus. Once entered into the computer, it immediately encrypts files using AES/RSA ciphers.
Victim may easily notice that Derp virus is attacking the system. Personal files and other data stored on infected machine will become inaccessible.
Derp virus target documents, images, videos, audio files, and other essential data. Through strong encryption algorithm, it refrain victim from accessing the said files. It attaches .derp extension to all encoded files.
Then it drops a ransom note stating that your files are encrypted with strongest encryption and unique key. Victim can recover all files by paying for the decrypt tool. The amount of private key and decrypt software is $980. It gives a 50% discount if victim contact cyber criminal within 72 hours. It made ransom price down to $490. Derp virus advised victim to contact them via email addresses gorentos @ bitmessage.ch and gerentoshelp @ firemail.cc.
We strongly suggest not paying or following any instructions coming from online attacker. This act will only encourage them to create even more scrap file like Derp virus. The best thing you can do is to remove the infection first to stop this from destroying your system. Pertaining to retrieval of your precious files, using your backup is the possible solution for now. Please be reminded that paying for private key and decrypt software has no assurance that crook will release your files.
To avoid being a victim of Derp ransomware, never download and install software from unreliable sources. Sometimes, online crook use free downloads application as way of spreading ransomware. Opening an e-email from unknown sender might lead you to catch malicious links or files like Derp virus. Most importantly, it is always best to have effective anti-virus software installed on the computer.
Derp Removal Procedures
Systematic procedures to get rid of the threat are presented on this section. Make sure to scan the computer with suggested tools and scanners.
Step 1 : Reboot Windows Into Safe Mode With Networking.
First thing you should do is reboot the computer in Safe Mode with Networking to avoid Derp from loading at start-up.
NOTE: You will need to PRINT or BOOKMARK this procedure, as we have to restart the computer during the removal process.
1 Remove all media such as Memory Card, cd, dvd, and USB devices. Then, restart the computer.
2 Boot Windows computer into SafeMode with Networking.
Instructions for Windows XP, Windows Vista, and Windows 7 system
a) Before Windows begins to load, press F8 on your keyboard.
b) It will display the Advanced Boot Options menu. Select Safe Mode with Networking.
Procedures for Windows 8 and Windows 10
a) Before Windows begins to load, press Shift and F8 on your keyboard.
b) On Recovery interface, click on 'See advanced repair options'.
c) Next, click on Troubleshoot option.
d) Then, select Advanced options from the list.
e) Lastly, please choose Windows Startup Settings and click on Restart. When Windows restarts, you will be send to a familiar Advanced Boot Options screen.
f) Select Safe Mode with Networking from the selections menu.
Step 2 : Detect and Remove Derp with Anti-malware Tool
3 Once the computer boots into Safe Mode with Networking, download the Removal Tool and save it on your Desktop or any location on your PC.
4 When finished downloading, locate and double-click on the file to install the application. Windows' User Account Control will prompt at this point, please click Yes to continue installing the program.
5 Follow the prompts and install with default configuration.
6 Before the installation completes, check prompts that software will run and update on itself.
7 Click Finish. Program will run automatically and you will be prompted to update the program before doing a scan. Please download needed update.
8 When finished updating, the tool will run. Select Perform full scan on main screen to check your computer thoroughly.
9 Scanning may take a while. When done, click on Show Results.
10 Make sure that all detected threats are checked, click on Remove Selected. This will delete all files and registry entries that belongs to Derp.
11 Finally, restart your computer.
Note: If Derp prevents mbam-setup.exe from downloading. Download the software from another computer. Renaming it to something like 'anything.exe' can help elude the malware.
Step 3 : Additional Anti-virus and Anti-rootkit Scans
Ensure that no more files of Derp are left inside the computer
12 Click on the button below to download Norton Power Eraser from official web site. Save it to your desktop or any location of your choice.
13 Once the file is downloaded, navigate its location and double-click on the icon (NPE.exe) to launch the antivirus program.
14 Norton Power Eraser will run. If it prompts for End User License Agreement, please click on Accept.
15 On NPE main window, click on Advanced. We will attempt to remove Derp components without restarting the computer.
16 On next window, select System Scan and click on Scan now to perform standard scan on your computer.
18 When scan is complete. All detected risks are listed. Remove them and restart Windows if necessary.
Alternative Removal Procedure for Derp
Use Windows System Restore to return Windows to previous state
During an infection, Derp drops various files and registry entries. The threat intentionally hides system files by setting options in the registry. With these rigid changes, the best solution is to return Windows to previous working state is through System Restore.
To verify if System Restore is active on your computer, please follow the instructions below to access this feature.
Access System Restore on Windows XP, Windows Vista, and Windows 7
a) Go to Start Menu, then under 'Run' or 'Search Program and Files' field, type rstrui.
b) Then, press Enter on the keyboard to open System Restore Settings.
Open System Restore on Windows 8 and Windows 10
a) Hover your mouse cursor to the lower left corner of the screen and wait for the Start icon to appear.
b) Right-click on the icon and select Run from the list. This will open a Run dialog box.
c) Type rstrui on the 'Open' field and click on OK to initiate the command.
If previous restore point is saved, you may proceed with Windows System Restore. Click here to see the full procedure.