TeslaCrypt 4.0


If all of your files have recently acquired a strange extension and are unusable, then it is likely that you have been targeted with a ransomware virus. Judging from the file extension used this virus is probably TeslaCrypt Virus. It is a relatively new addition to the ransomware scene and it’s still viral, thus we decided to make a guide on how to handle it.

TeslaCrypt 4.0

The TeslaCrypt Ransomware will display this message.

TeslaCrypt 4.0

The biggest reason why ransomware viruses like TeslaCrypt 4.0 are such a huge threat is the fact that files encrypted by them won’t return to their original state even if the virus is removed. The only way to decrypt these files is to obtain the necessary code, which is exactly what the hackers want to sell you. Fortunately, some alternative methods do exist, but they are far from perfect.

We’ll do everything possible to save your files without having to pay the ransom, so stay tight.

It is far easier to prevent your PC from becoming infected in the first place than it is to handle this virus. Please keep that in mind, because ransomware has been growing in popularity and it is not unlikely to encounter any of its brothers in the future. A computer infected by the TeslaCrypt 4.0 Virus (or similar ransomware) can be saved if quick action is taken.

While the ransomware will try to remain invisible once it gets inside your computer, it will take some time for it to encrypt your files. You can notice its presence if your PC is behaving much worse than usual and ordinary programs take a long time to load or function properly. The encryption process used by TeslaCrypt 4.0 is fairly CPU/RAM hungry, so if you open your Task Manager you may be able to spot the process. It will usually come from an “Unknown” manufacturer or have a blank space and it will consume a lot of memory and CPU power. If you spot anything like this it is advisable to immediately shut down the computer (pull the plug if necessary) and seek professional help.

Paying the ransom – is it worth it?

It is a sad fact that many people prefer to pay the ransom and this is precisely the reason why there are so many ransomware viruses in circulation – apparently extortion is a lucrative business. Unfortunately the stories of many people who tried to pay, but got burnt are untold. The reality is that you are extorted by cyber criminals to pay the money in BitCoins – an untraceable online currency. You get no guarantee that you will get your information back, but you can be assured that this money will be put into excellent use in the creation of a new ransomware agent. Our advice is to try and salvage as much of your encrypted files as possible and forget about payment altogether.

Distribution of TeslaCrypt 4.0

Believe it or not, Trojan horse viruses have become the primary way in which ransomware viruses reach our computers. Once a Trojan horse gets installed into your system it can communicate with a remote server and install the ransomware (and possible future versions of the same) on your PC. Since you already have a ransomware infection it is highly likely that you have a Trojan on boards as well. Unfortunately these things are pretty good at the hide-and-seek game, the only sure way to find it remains the use of security software. If you already have such a program have it do a scan on your PC, if you don’t or if it fails to produce any convincing results you can try the software we’ve found to be best in the field. Click on one of the banners in our page.


Name TeslaCrypt 4.0
Type Ransomware
Danger Level High (Data ruined by the virus is very hard to recover)
Symptoms Unexplained sudden PC slowdown, followed by file encryption and virus reveal.
Distribution Method Loaded by a Trojan horse “dropper” virus, but also possible to be directly installed via malicious link or file.
Detection Tool Ransomware are notoriously difficult to track down. Use SpyHunter – a professional parasite scanner – to make sure you find all files related to the infection.

Keep in mind, SpyHunter is a malware detection tool. To remove the infection, you need to purchase the full version.
More information about SpyHunter and steps to uninstall.

Remove TeslaCrypt 4.0

TeslaCrypt 4.0

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).

TeslaCrypt 4.0


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

TeslaCrypt 4.0

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.
TeslaCrypt 4.0
Drag and Drop File Here To Scan
TeslaCrypt 4.0
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Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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    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.

    TeslaCrypt 4.0

    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:

    TeslaCrypt 4.0

    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:

    TeslaCrypt 4.0

    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.

    TeslaCrypt 4.0

    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!

    TeslaCrypt 4.0 

    How to Decrypt TeslaCrypt 4.0 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


    Violet George

    Violet is an active writer with a passion for all things cyber security. She enjoys helping victims of computer virus infections remove them and successfully deal with the aftermath of the attacks. But most importantly, Violet makes it her priority to spend time educating people on privacy issues and maintaining the safety of their computers. It is her firm belief that by spreading this information, she can empower web users to effectively protect their personal data and their devices from hackers and cybercriminals.

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