What is STOP Ransomware
STOP Ransomware (sometimes called DJVU Ransomware) is an obnoxious virus, that encrypts files on computers using the AES encryption algorithm, makes them unavailable and demands money in exchange for so-called “decryptor”. Files processed by the latest version of STOP Ransomware, in particular, can be distinguished by the .leto, .werd, .bora or .xoza extensions. The analysis showed that the cryptographic installer loaded with the “crack” or adware is installed under an arbitrary name in the
%LocalAppData%\ folder. When executed, it loads four executable files there: 1.exe, 2.exe, 3.exe and updatewin.exe. The first of them is responsible for neutralizing Windows Defender, the second is for blocking access to information security sites. After the malware is launched, a fake message appears on the screen that says about installing the update for Windows. In fact, at this moment, almost all user files on the computer are encrypted. In each folder containing encrypted documents, a text file (_readme.txt) appears in which attackers explain the operation of the virus. They offer to pay them a ransom for decryption, urging them not to use third-party programs, as this can lead to the deletion of all documents. Here is the content of the ransom note:
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:
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:
Reserve e-mail address to contact us:
Your personal ID:
Unfortunately, chances of successful file recovery are low, because the virus uses advanced mechanisms to prevent the possibility of data restoration. Security researcher Michael Gillespie released a tool called STOPDecrypter, that was able to retrieve the key for previous versions of STOP Ransomware. However, it is operable only when an offline key was used. At the moment, files with .leto, .werd, .bora and .xoza extensions cannot be decrypted with STOPDecrypter. Developers from various security companies working hard on trying to break virus algorithms, and we still provide links and instructions for this instrument. Until this happens you can try standard Windows system functions, such as restore points, the shadow copies, previous versions of files, can be useful, although, malicious algorithms often prevent such opportunities. Stellar Data Recovery Professional is one of the best file-recovery tools and, if used properly, may recover copies and duplicates of encrypted files, that were removed prior to infection. Follow step-by-step instructions in this tutorial to remove STOP Ransomware and decrypt .leto, .werd, .bora or .xoza files for free.
- Download STOP Ransomware Removal Tool
- Get decryption tool for .leto, .werd, .bora or .xoza files
- Recover encrypted files with Stellar Data Recovery Professional
- Restore encrypted files with Windows Previous Versions
- Restore files with Shadow Explorer
- How to protect from threats like STOP Ransomware
How STOP Ransomware infected your PC
Virus modifies “hosts” file to block Windows updates, downloading antivirus programs, and visiting sites related to security news or offering security solutions. STOP Ransomware comes along with AZORult trojan, that 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 update process.
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. STOP 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. Virus assigns certain ID with the victims, that is used to name those files and supposedly to send decryption key. Great tools to protect against STOP Ransomware are: Emsisoft Anti-Malware and Malwarebytes Anti-Malware.
Download STOP Ransomware Removal Tool
To remove STOP Ransomware completely, we recommend you to use WiperSoft AntiSpyware from WiperSoft. It detects and removes all files, folders and registry keys of STOP Ransomware and prevents future infections by similar viruses.
Alternative Removal Tool
To remove STOP Ransomware completely, we recommend you to use SpyHunter 5 from EnigmaSoft Limited. It detects and removes all files, folders and registry keys of STOP Ransomware. The trial version of SpyHunter 5 offers virus scan and 1-time removal for FREE.
How to remove STOP Ransomware manually
It is not recommended to remove STOP Ransomware manually, for safer solution use Removal Tools instead.
STOP Ransomware files:
STOP Ransomware registry keys:
How to decrypt and restore .leto, .werd, .bora or .xoza files
Use automated decryptors
Download STOPDecrypter (.leto, .werd, .bora or .xoza variations)
IMPORTANT: Read this F.A.Q. and guide on using STOPDecrypter to avoid file corruption and time wasting.
STOPDecrypter is able to decrypt .leto, .werd, .bora or .xoza files, encrypted by STOP Ransomware. This tool was developed by Michael Gillespie. It requires encrypted and original file pair with the size more ~150 Kb and works only for those encrypted with offline keys. Download it here:
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 .leto, .werd, .bora or .xoza files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing of files will be performed free of charge and if files are decryptable, all you need to do is purchase 2-year licence of Dr.Web Security Space worth $120 or less. Otherwise, you don’t have to pay.
If you are infected with STOP 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 .leto, .werd, .bora or .xoza files
- Download Stellar Data Recovery Professional.
- Click Recover Data button.
- Select type of files you want to restore and click Next button.
- Choose location where you would like to restore files from and click Scan button.
- Preview found files, choose ones you will restore and click Recover.
Using Windows Previous Versions option:
- Right-click on infected file and choose Properties.
- Select Previous Versions tab.
- Choose particular version of the file and click Copy.
- To restore the selected file and replace the existing one, click on the Restore button.
- In case there is no items in the list choose alternative method.
Using Shadow Explorer:
- Download Shadow Explorer program.
- Run it and you will see screen listing of all the drives and the dates that shadow copy was created.
- Select the drive and date that you want to restore from.
- Right-click on a folder name and select Export.
- In case there are no other dates in the list, choose alternative method.
If you are using Dropbox:
- Login to the DropBox website and go to the folder that contains encrypted files.
- Right-click on the encrypted file and select Previous Versions.
- Select the version of the file you wish to restore and click on the Restore button.
How to protect computer from viruses like STOP Ransomware in future
1. Get special anti-ransomware software
Use BitDefender Anti-Ransomware
Famous antivirus vendor BitDefender released free tool, that will help you with active anti-ransomware protection, as additional shield to your current protection. It will not conflict with bigger security applications. If you are searching complete internet security solution consider upgrading to full version of BitDefender Internet Security 2018.
2. Back up your files
Regardless of the success of protection against ransomware threats, you can save your files using simple online backup. Cloud services are quite fast and cheap nowadays. There is more sense using online backup, than creating physical drives, that can get infected and encrypted when connected to PC or get damaged from dropping or hitting. Windows 10 and 8/8.1 users can find pre-installed OneDrive backup solution from Microsoft. It is one of the best backup services on the market and has reasonable pricing plans. Users of earlier versions can get acquainted with it here. Make sure to backup and sync most important files and folders in OneDrive.
3. Do not open spam e-mails and protect your mailbox
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 SpamFighter. It works with various desktop applications and provides a very high level of anti-spam protection.