Dewar Virus


Dewar is a very malicious file-encrypting threat that belongs to the Ransomware category. In return for retrieving your personal files, Dewar asks you to make a ransom payment to a given cryptocurrency account.


Name Dewar
Type Ransomware
Danger Level High (Ransomware is by far the worst threat you can encounter)
Symptoms Very few and unnoticeable ones before the ransom notification comes up.
Distribution Method From fake ads and fake system requests to spam emails and contagious web pages.
Data Recovery Tool Not Available
Detection Tool
Dewar Virus

The Dewar Virus will encrypt your files

If your work-related documents, photos, videos, and other important information have been blocked by means of encryption and a frightening ransom note has demanded you to pay some money to regain access to them, there is a strong reason to be scared. Most probably, you have fallen victim to Dewar which is one of the latest ransomware cryptoviruses that can be found on the web.

This malware works by applying complex code encryption that does not damage your files or device like many other forms of malware. This means that if you fall victim to Dewar, you will not have your data corrupted, but you will have it locked with a powerful algorithm that’s almost unbreakable. The file encryption approach is used only to intimidate the victims and to allow the malicious actors behind the Ransomware to ask those who want to decrypt their files to pay a ransom.

This illegal money-making scheme has, unfortunately, evolved into a lucrative business model for various hacking organizations, and they have come up with new and advanced threats of this type. Victims are normally promised to recover their documents with the help of a decryption key if they pay the required ransom money. However, no assurance is actually given that they will receive the decryption key from the crooks behind the ransomware.

The Dewar virus

The Dewar virus is a stealthy ransomware infection that encrypts user files and holds them for ransom. The Dewar virus can hardly be detected, since it is well hidden in the system, with very few visible symptoms.

As the malware sneaks into the device, the information is encrypted immediately, but hardly any obvious signs will suggest the malicious event. Only when the whole encryption process is complete will the cryptovirus be detected and this will usually happen when a ransom note appears on the screen. In general, the hackers will do their best to convince you about the harmful consequences of not paying the ransom. They will set a deadline and may threaten to delete all of your information if their demands are not met. Some versions of ransomware may even play an audio file that tells you what has happened to your information.  All this is done to make the victims pay as quickly as possible and not give them time to remove the infection.

The Dewar file encryption

The Dewar file encryption is a method that people with criminal intentions use to encode user files and keep them inaccessible. The Dewar file encryption file can be very difficult to reverse. Therefore, even the corresponding decryption key that the hackers keep in secret may not be effective.

In many cases, the hackers don’t really send the victims a decryption key when they pay. That’s the reason why many security experts advise against giving your money to the crooks behind the ransomware. Taking the initiative in your hands and having the ransomware removed instead of risking your money is a good alternative, though, and our instructions may be able to help.

Remove Dewar Ransomware

Dewar Virus

Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).

Dewar Virus


Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab. Try to determine which processes are dangerous. 

Dewar Virus

Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Dewar Virus
Drag and Drop File Here To Scan
Dewar Virus
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
    This scanner is based on VirusTotal's API. By submitting data to it, you agree to their Terms of Service and Privacy Policy, and to the sharing of your sample submission with the security community. Please do not submit files with personal information if you do not want them to be shared.

    After you open their folder, end the processes that are infected, then delete their folders. 

    Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections.

    Dewar Virus

    Hold the Start Key and R –  copy + paste the following and click OK:

    notepad %windir%/system32/Drivers/etc/hosts

    A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

    Dewar Virus

    If there are suspicious IPs below “Localhost” – write to us in the comments.

    Type msconfig in the search field and hit enter. A window will pop-up:

    Dewar Virus

    Go in Startup —> Uncheck entries that have “Unknown” as Manufacturer.

    • Please note that ransomware may even include a fake Manufacturer name to its process. Make sure you check out every process here is legitimate.

    Dewar Virus

    Type Regedit in the windows search field and press EnterOnce inside, press CTRL and F together and type the virus’s Name. 

    Search for the ransomware  in your registries and delete the entries. Be extremely careful –  you can damage your system if you delete entries not related to the ransomware.

    Type each of the following in the Windows Search Field:

    1. %AppData%
    2. %LocalAppData%
    3. %ProgramData%
    4. %WinDir%
    5. %Temp%

    Delete everything in Temp. The rest just check out for anything recently added. Remember to leave us a comment if you run into any trouble!

    Dewar Virus 

    How to Decrypt Dewar files

    We have a comprehensive (and daily updated) guide on how to decrypt your files. Check it out here.

    If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!


    About the author


    Lidia Howler

    Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

    Leave a Comment