Remove Nile Ransomware (.nile Decryption)

By Chona Esjay | Posted on August 2, 2020 |

Nile ransomware is a hazardous computer threat that is targeting majority of user’s files including documents, spreadsheets, videos, images, archives, databases, drawings, presentations, and similar data. It was detected that Nile ransomware have the same pattern as the entire malware from STOP/DJVU group. Earlier variants as Kuus, Erif, Kook, and this latest threat are using a sophisticated encryption technique to lock user’s files and deny them access. To make the data accessible once more, victim must pay the amount as indicated in the ransom note.

Nile ransomware reach the target user through several methods but the most winning of all is the use of spam email campaign. On this scenario, attackers are sending Nile ransomware as attachment to message that is purporting to be from legitimate organization. The virus is cleverly in disguise of a document file and for that; recipient would never be suspicious when opening it. The context of the message usually revolves about relevant inquiries, which points to the attach file for full details.

If recipient opens the attachment, Nile ransomware initiates the attack and begin to download malicious codes on various locations especially on Windows system folder. It also creates a registry entry to run the malicious code on each Windows start-up. Next, Nile ransomware will scout the local drive for important data and encrypt them with complex algorithm. While encrypting, the virus also appends an identifier to infected files by adding a .nile file extension. On that note, a simple abc.doc will transform into abc.doc.nile after the encryption process. Lastly, Nile ransomware generates a ransom note on the same exact location as encrypted files containing brief description and ways to recover all .nile encrypted files. Attacker demands $980 in exchange for the Nile decryption tool and private key that are both needed to recover encrypted files.

Nile Ransomware

Unfortunately, designated payment channel is suspicious and there is no way for victims to request for a refund just in case the deal did not materialize. Makers of Nile ransomware can flee away without a trace after receiving the ransom payment. So, there is no guarantee that victims are going to receive the Nile decryption tool after transmitting the money.

How to Remove Nile Ransomware

Ransomware files are placed deeply into the system and on various locations, thus, thorough scanning is vital to totally remove Nile 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.

Download Malware Scanner

2. After downloading, install the program. It may run automatically or you have to double-click on the downloaded file MBSetup.exe.

3. Carry out the installation with default setup process.

4. After the installation process, click the Get Started button to launch the program.

5. Continue with the prompts until the main program opens.

6. On the main console, click on Scan to run most complete detection method to find hidden objects associated to Nile ransomware.

7. Scanning may take a while. Please wait until the anti-malware tool is done with the checking.

MBAM Scan

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 Nile'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 Nile 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 Nile 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.

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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.

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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 Nile ransomware have been completely deleted from the computer. Please restart Windows to proceed with the normal operation.

Stage 3 : Unlocking files with Nile Decryption Tool

Emsisoft Decryptor for STOP Djvu will work only if affected files were encrypted using Offline Keys. Nile ransomware uses the alternate Offline Keys during encryption if there is a problem encountered while communicating to a remote command-and-control server. Follow the guide to start recovering .nile encrypted files.

1. As precautionary measures, we suggest to BACKUP all your .nile encrypted files first on a separate media (USB Drive, Flash Drive, DVD Discs, etc…).

2. Download Emsisoft Decryptor for STOP Djvu from this archive page.

3. Right-click on decrypt_STOPDjvu.exe and click "Run as Administrator". Windows may prompt "Do you want to allow this app…" just click Yes to continue.

4. By default, the tool will pre-populate the locations where encrypted files were identified. To include other directories, simply click Add Folder button.

5. To start recovering files infected by Nile ransomware, click on Decrypt button to start the procedure. The interface will display status of the current decryption process.

decrypt_STOPDjvu.exe

We will update this section once the full decryption tool is on hand. In the meantime, please try other options below if the above procedure is not not effective.

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 Nile 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 Nile 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 Nile 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 Nile 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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