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What is Dalle Ransomware

Dalle Ransomware is a high-risk infection that is part of the Djvu ransomware family. It was first discovered by malware researcher Michael Gillespie. The primary function of Dalle is to infiltrate computers stealthily and encrypt most stored files, rendering them unusable. During the encryption process, Dalle appends the .dalle extension to the filenames. The exact encryption algorithm used by Dalle is unconfirmed, but it is known that each victim receives a unique decryption key stored on a remote server controlled by the ransomware developers. Dalle creates a ransom note named _readme.txt and places a copy in every folder containing encrypted files. The note informs victims that their files are encrypted and demands a ransom payment to decrypt them. The initial ransom amount is $980, with a 50% discount offered if contact is made within 72 hours, reducing the cost to $490. The main purpose of the article is informational, aiming to educate readers about the Dalle Ransomware, its infection methods, the encryption it uses, the ransom note it creates, and the possibilities for decryption, including the use of tools like the Emsisoft STOP Djvu decryptor.

STOP Ransomware (.dalle extensions)
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As of the information available, there is no guaranteed decryption tool for Dalle ransomware, especially if files are encrypted with a unique online key. However, if the infected machine is offline or the server is not responding, Dalle may use an “offline key,” which could potentially be decrypted by Michael Gillespie’s decryption tool. Emsisoft also provides free ransomware decryption tools, but their effectiveness depends on the specific ransomware version and whether a decryption key is available. The Emsisoft STOP Djvu decryptor is designed to decrypt files encrypted by the STOP Djvu family of ransomware, which includes Dalle. However, its success depends on whether the ransomware used an offline key and if the key is known to the decryptor’s database.

dalle ransomware

To attempt decryption of .dalle files, victims should first ensure that the ransomware is completely removed from their system. They can then try using available decryption tools like the Emsisoft STOP Djvu decryptor. If the files were encrypted with an offline key and the key is available, there is a chance for successful decryption. Otherwise, victims may need to rely on backups or professional data recovery services. In conclusion, Dalle Ransomware is a serious threat that encrypts files and demands a ransom. While there is no guaranteed decryption for all cases, especially those encrypted with unique online keys, tools like the Emsisoft STOP Djvu decryptor may help in some instances. It is crucial to maintain regular backups and employ robust security measures to prevent such infections.

How Dalle Ransomware infects computers

Dalle typically infiltrates computers through deceptive methods such as spam emails with infected attachments, exploiting vulnerabilities, or through other malware. Once installed, it scans the system for files to encrypt. It may also spread by hacking into Remote Desktop Services (RDP) ports and brute-forcing passwords.

  1. Download Dalle Ransomware Removal Tool
  2. Get decryption tool for .dalle files
  3. Recover encrypted files with Stellar Data Recovery Professional
  4. Restore encrypted files with Windows Previous Versions
  5. Restore files with Shadow Explorer
  6. Restore media files with Media Repair
  7. How to protect from threats like Dalle Ransomware

Virus modifies “hosts” file to block Windows updates, downloading antivirus programs, and visiting sites related to security news or offering security solutions. Dalle Ransomware comes along with AZORult trojan, which was initially created to steal logins and passwords. The process of infection also looks like installing Windows updates, the malware shows a fake window, that mimics the update process.

fake windows update from Dalle Ransomware

It uses rdpclip.exe to replace a legal Windows file and to launch an attack on a computer network. After encrypting the files, the encrypter is deleted using the delself.bat command file. Dalle Ransomware virus is propagated via spam attack with malicious e-mail attachments and using manual PC hacking. Can be distributed by hacking through an unprotected RDP configuration, fraudulent downloads, exploits, web injections, fake updates, repackaged, and infected installers. The virus assigns a certain ID to the victims, which is used to name those files and supposedly to send a decryption key. Great tools to protect against Dalle Ransomware are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware.

Download Dalle Ransomware Removal Tool

Download Removal Tool

To remove Dalle Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders, and registry keys of Dalle Ransomware . The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.

Alternative Removal Tool

Download Norton Antivirus

To remove Dalle Ransomware completely, we recommend you to use Norton Antivirus from Symantec. It detects and removes all files, folders, and registry keys of Dalle Ransomware and prevents future infections by similar viruses.

How to remove Dalle Ransomware manually

Kill Dalle Ransomware Process

  1. Press Ctrl + Shift + Esc keys simultaneously to open the Windows Task Manager.
  2. Select the Processes tab and look for any suspicious processes related to Dalle Ransomware .
  3. Right-click on the malicious process and select Open file location. This step is necessary to remove executable file after this.
  4. Right-click on the malicious process and select End Task or End Process option.

Disable Dalle Ransomware Start-up Entry

  1. Press Win + R keys together to open the Run dialog box.
  2. Type msconfig and press Enter to open the System Configuration window.
  3. Go to the Startup tab and look for any suspicious entries related to Dalle Ransomware .
  4. Uncheck the box next to the malicious entry and click OK to disable it.

Delete Dalle Ransomware Task

  1. Press Win + R keys together to open the Run dialog box.
  2. Type taskschd.msc and press Enter to open the Task Scheduler.
  3. Look for any tasks related to Dalle Ransomware in the Task Scheduler Library.
  4. Right-click on the malicious task and select Delete or Disable option.

Remove Dalle Ransomware Executable Files

  1. Open folder that was opened on the third step of the first instruction Kill Dalle Ransomware Process.
  2. Find Dalle Ransomware executable file.
  3. Right-click on the malicious executable file and select Delete to remove it.
  4. To be able to do this you will need to modify permissions fo this file in the instruction below.

Disable inheritance for executable files

  1. Right-click on the affected folder and click Properties.
  2. Click the Security tab and then click the Advanced button.
  3. In the Advanced Security Settings window, click the Disable inheritance button.
  4. Choose Convert inherited permissions into explicit permissions on this object to remove inherited permissions.
  5. Now you will be able to delete the file.

It is not recommended to remove Dalle Ransomware manually, for safer solution use Removal Tools instead.

Dalle Ransomware files:

_readme.txt
rdpclip.exe
delself.bat
{randomname}.exe

Dalle Ransomware registry keys:

no information

How to decrypt and restore .dalle files

Use automated decryptors

Download STOP Djvu Decryptor from EmsiSoft (.dalle variations)

IMPORTANT: Read this detailed guide on using STOP Djvu Decryptor to avoid file corruption and time wasting.

STOP djvu ransomware decryptor from emsisoft

STOP Djvu Decryptor is able to decrypt .dalle files, encrypted by Dalle Ransomware . This tool was developed by EmsiSoft. It works in automatic mode, but in most cases works only for files encrypted with offline keys. Download it here:

Download STOP Djvu Decryptor

Dr.Web Rescue Pack

Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of .dalle files by uploading samples to Dr. Web Ransomware Decryption Service. Analysis of files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.

If you are infected with Dalle Ransomware and removed it from your computer, you can try decrypting your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:

Use Stellar Data Recovery Professional to restore .dalle files

stellar data recovery professional

  1. Download Stellar Data Recovery Professional.
  2. Click Recover Data button.
  3. Select type of files you want to restore and click Next button.
  4. Choose location where you would like to restore files from and click Scan button.
  5. Preview found files, choose ones you will restore and click Recover.
Download Stellar Data Recovery Professional

Using Windows Previous Versions option:

  1. Right-click on infected file and choose Properties.
  2. Select Previous Versions tab.
  3. Choose particular version of the file and click Copy.
  4. To restore the selected file and replace the existing one, click on the Restore button.
  5. In case there is no items in the list choose alternative method.

Using Shadow Explorer:

  1. Download Shadow Explorer program.
  2. Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
  3. Select the drive and date that you want to restore from.
  4. Right-click on a folder name and select Export.
  5. In case there are no other dates in the list, choose alternative method.

If you are using Dropbox:

  1. Login to the DropBox website and go to the folder that contains encrypted files.
  2. Right-click on the encrypted file and select Previous Versions.
  3. Select the version of the file you wish to restore and click on the Restore button.

Use Media Repair to decrypt media files encrypted with .dalle

media repair tool

  1. Download Media Repair tool.
  2. Right-click on the downloaded archive, and select Extract to Media_Repair\.
  3. Then double-click on the extracted .exe file to launch the utility.
  4. At first, you have to choose which file type you want to decrypt. You can do it from the drop-down menu in the utility.
  5. Next, browser the folder with encrypted or reference files. Choose any of them and click on the Test icon located in the top right corner.
  6. Media Repair will display a pop-up message with information on whether it can repair the selected file or not.
  7. After checking if it is possible or not, select your reference file and click on the icon right under the Test button we used in step #5.
  8. If the file pair is properly matched, you can move on and hit the Play button to start repairing. You can also stop the process anytime by clicking on the Stop button.

How to protect computer from viruses, like Dalle Ransomware , in future

1. Get special anti-ransomware software

Use G-DATA STOP/Djvu vaccine

stop/djvu ransomware vaccine

G DATA has released a vaccine to block STOP/DJVU ransomware from encrypting victims’ files after infection. The vaccine prevents the ransomware from encrypting files anymore, but it does not prevent the infection itself. The vaccine is available on GitHub. Download it below:

Download STOP/Djvu vaccine

Use ZoneAlarm Anti-Ransomware

Famous antivirus brand ZoneAlarm by Check Point released a comprehensive tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. The tool provides Zero-Day protection against ransomware and allows you to recover files. ZoneAlarm Anti-Ransomware is compatible with all other antiviruses, firewalls, and security software except ZoneAlarm Extreme (already shipped with ZoneAlarm Anti-Ransomware) or Check Point Endpoint products. The killer features of this application are: automatic file recovery, overwrite protection that instantly and automatically recovers any encrypted files, file protection that detects and blocks even unknown encryptors.

Download ZoneAlarm Anti-Ransomware

2. Back up your files

idrive backup

As an additional way to save your files, we recommend online backup. Local storage, such as hard drives, SSDs, flash drives, or remote network storage can be instantly infected by the virus once plugged in or connected to. Dalle Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.

Download iDrive

3. Do not open spam e-mails and protect your mailbox

mailwasher pro

Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.

Download MailWasher Pro
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