Remove Darus Ransomware (Decrypt .darus Files)

By | Posted on July 22, 2019 |

Computer users are always advised to backup their data regularly because on this period, there are rampant spread of ransomware that stems from various internet sources including spam emails, malicious advertisements, freeware downloads, and installation of cracked software. As posted so many times, ransomware is one of the most dangerous types of infection causing severe damages to computers and files. Darus ransomware is one of this threat and known to be part of STOP ransomware family. Previous variants that are similarly hazardous includes Tocue, Vusad, Madek, and many more.

What is more troublesome with cryptovirus like Darus is not the removal of malicious codes inside Windows system. This can be easily get rid off by efficient anti-virus and anti-malware programs. But the tool that can freely decrypt all .darus files may not be available for an indefinite period. Malware researchers claim that reversing the technology of ransomware, particularly Darus is not easy due to highly complex method applied by attackers.

During the attack of Darus, it will integrate several malicious components on various system folders. Then, it will search computer’s storage for common files like documents, presentations, databases, archives, spreadsheet, photos, images, videos, and so on. After the inspection, Darus encrypts them with military-grade algorithm that requires a combination of private key and decryption tool to restore. The virus was designed to scramble file structure and it remains inaccessible until such time that users are able to decrypt them using Darus recovery software from attackers or alternative tool from malware researchers. Though, the latter is not yet available for all types. Currently on-hand is STOPDecrypter that is ready to recover .darus files if it was encrypted using an offline keys, which are hard-coded on the virus. Normally, Darus communicates to a command-and-control sever in the course of decryption process. If the remoter server is unavailable for various reasons, it compels to utilize offline keys. More information about using the recovery software and detailed removal of Darus is the topic on the next segment.

Darus Ransom Virus

How to Remove Darus Ransomware

Ransomware files are placed deeply into the system and on various locations, thus, thorough scanning is vital to totally remove Darus virus. Aside from our suggested tool, you may also run your own security program.

Though affected files may be impossible to decrypt due to complexity of the encryption, you can still try recovery method like alternative tool, Shadow Explorer or Previous Version as described below.

Stage 1: Scan the Computer with Anti-Malware Tool

1. Download free anti-malware scanner called MalwareBytes Anti-Malware.
Malwarebytes Anti-Malware Download Link (this will open a new window)

2. After downloading, install the program. It may run automatically or you have to double-click on the downloaded file MB3-Setup-[version].exe.

3. Carry out the installation with default setup process.

4. At the last stage of installation process, click the Finish button. The program should launch momentarily.

5. On Malwarebytes Anti-Malware console, select Scan from the menu to see available Scan Method.

6. Next, click on Threat Scan. This is the most complete scan method that will surely find any hidden malicious objects associated to Darus ransomware.

7. Finally, click on Start Scan begin checking the computer for malware and similar threats.

MBAM-threatscan

8. Once the scan has completed, the tool will display the list of detected threats. Remove all identified malicious items and restart the computer if necessary.

Stage 2: Double-check for Darus’s leftover with Microsoft’s Malicious Software Removal Tool

1. Download the free scanner called Malicious Software Removal Tool.
Malicious Software Removal Tool Download Link (this will open a new window)

download-msrt

2. The tool automatically checks the operating system and suggest appropriate download version. Click on Download button to begin. Save the file to a convenient location, preferably on Desktop.

3. After downloading the file, Windows will prompt that download has completed. Click Run to start scanning for Darus ransomware. Another option is to browse the location folder and double click on the file to run.

msrt-icon

4. The tool will display Welcome screen, click Next. Please note the message “This tool is not a replacement for an antivirus product.” You must understand that this program is made specifically to find and remove malware, viruses, Trojans, and other harmful elements on the computer. It was not designed to protect the computer.

msrt1

5. Next, you will see Scan Type. Please choose Full Scan to ensure that all Darus ransom virus entities and other harmful files left on the computer will be found and removed. For advanced computer user, you can opt for Customized Scan, if there are other drives or folders you wanted to include in this scan.

msrt2

6. Full scan may take a while, please wait for Malicious Software Removal Tool to complete the tasks. However, you may cancel the scan anytime by clicking on the Cancel button.

msrt3

7. After scanning, the tool will reveal all identified threats. There may be other threats that our first scan fails to detect. Please remove/delete all detected items.

8. When removal procedure is complete, you may now close Malicious Software Removal Tool. We hope that Darus ransomware have been completely deleted from the computer. Please restart Windows to proceed with the normal operation.

Stage 3 : Unlocking files with Darus Decryption Tool

So far, this Darus decryption tool works only for files that were encrypted using offline keys. This happens sometimes if the virus is unable to communicate to remote server to obtain unique keys; instead, it will use offline keys when encrypting files. However, there is a little chance of recovering files using this tool due to limited available offline keys that were integrated with this decryption tool.

For additional information (download link, supported versions, instructions) about StopDecrypter, please proceed to ransomware decryption tool archive page.

If you received a message stating that “No keys were found for the following IDs (.darus)”, please copy and submit the information to the official download page to include your information (log file) and have it archive in case decryption software becomes available.

StopDecrypter Information

We will update this section once the full decryption tool is on hand. In the meantime, please try other options below.

Option 1: Windows Previous Version Tool

Windows Vista and Windows 7 have a feature called Previous Versions. However, this tool is only usable if restore point was made prior to Darus ransomware infection. To use this tool and recover files affected by the virus, please follow these steps:

1. Open My Computer or Windows Explorer.

2. Right-click on the affected files or folders. From the drop-down list, please click on Restore previous versions.

3. New window will open display all backup copy of files and folders you wanted to recover. Choose the appropriate file and click on Open, Copy, or Restore. Restoring selected files overwrites the current encrypted files on the computer.

Option 2: Use ShadowExplorer to restore files encrypted by Darus Ransomware

Just like Previous Version tool, ShadowExplorer is taking advantage of shadow copy created by Windows. This tool allows you to retrieve older version of files before it was encrypted by Darus ransomware.

1. Download ShadowExplorer from the official web site.

2. Install the program with the default settings.

3. The program should run automatically after installation. If not, double-click on ShadowExplorer icon.

4. You can see the drop-down list on top of the console. Please select proper drive and the most recent point-in-time shadow copies of files you wish to restore prior to Darus ransomware infection.

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5. Right-click on the Drive, Folder, or File you wish to restore and click Export…

6. Lastly, ShadowExplorer will prompt for location where you want to save the copy of recovered files.

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