Tisc Virus


Tisc

Tisc is a form of malware which attacks Windows PCs and forces their users to pay a ransom before they are allowed to access their own files. Tisc is known for using a secret encryption code to complete the task of locking its victims’ files.

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The Tisc virus file ransom note

Ransomware is a category of computer viruses that are mainly used as cyber tools for money extortion. They enter the targeted machine and silently lock the files in the system or the very screen of the computer, giving the hackers behind them blackmailing leverage. After this initial stage of the infection is completed, the malware would typically show a message on the user’s screen, in which message there are normally some instructions on how to send money to the criminals in exchange for getting the files or the screen unlocked. This is basically how most computer viruses of this category operate, but not all Ransomware threats are equally harmful or difficult to deal with. For instance, the Ransomware infections that lock the computer’s screen, though they might seem very problematic, are actually easier to remove and take care of. The file-lockers, on the other hand, are more advanced and there isn’t always an effective way to fully repair the consequences of their attacks.

The Tisc virus

The Tisc virus is an advanced malware program known as Ransomware – a type of virus that doesn’t let its victims access their personal files until a ransom is paid. The Tisc virus can secretly encrypt all data on the attacked machine to make it inaccessible.

Here, we will try to give you relevant information that will help you decide what to do in case your computer has been attacked by the file-locking Tisc virus. This threat uses an advanced encryption code to make the file sin your system unrecognizable to any software that you may try to use for opening them. The encryption can be unlocked but you will need a private key for that. Of course, the hackers have hold of the unique key that can release your files  and they want your money in exchange for it. You, however, shouldn’t go directly for the payment even if you have the demanded sum readily available and if the locked files are really important to you. The reason is simple – you may not get the key even if you strictly complete all of the ransom payment instructions. The people behind this virus aren’t concerned with whether or not you eventually get to restore your files. All they care about is getting your money, which means they may easily choose to not provide you with a working decryption solution if they don’t feel like it. 

The Tisc file extension

The Tisc file extension is a unique set of characters that this Ransomware uses to replace the normal extension suffixes of each encrypted file. The Tisc file extension is unreadable to any program and helps the virus prevent you from accessing your personal data.

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The Tisc file virus

A better option in such situations is to first try out some of the alternative solution options that may be available to you at the moment. A good place to start would be the removal guide offered on this page. Competing it should be enough to get the virus removed from your computer and while this won’t automatically bring the locked files back to their normal state, it will give you the option to connect any backups you may have lying around or to try the suggestions from the second part of our removal manual. Those suggestions may enable some of our readers to get some data back without paying anything to the hackers.

SUMMARY:

NameTisc
TypeRansomware
Detection Tool

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Remove Tisc Ransomware


Step1

You’ll have to restart your computer In Safe Mode before going through the steps outlined below. For this reason, what we recommend you is that you bookmark this page right now, so you can complete the Tisc removal guide from start to finish without losing the instructions.

After you’ve bookmarked the removal guide, restart your computer in Safe Mode by following the instructions from this link, and then proceed to the steps below.

Step2

WARNING! READ CAREFULLY BEFORE PROCEEDING!

In this step, you’ll need to head to the Start menu button that is located in the bottom left corner of the screen. When you click it, the Windows search box will be right at the bottom (If you are using Windows 10, simply start typing and the search box will appear). So, type “Task Manager” in the search box, then hit Enter on your keyboard.

In the Processes tab, search for any processes with the Tisc name or any other suspicious-looking processes that consume a lot of system resources.

If you’re unsure about the legitimacy of a process, right-click on it and choose Open File Location from the menu that appears. . 

malware-start-taskbar

This block contains unexpected or invalid content.Attempt Block Recovery

The File Location folder will contain files related to the selected process. Please check these files with the virus scanner provided below, or another reliable scanning program, to ensure they do not contain any harmful code.

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.
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Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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    Any danger found in the scanned files is an indication that you need to stop the process that is related to the dangerous files. You can stop a process by right-clicking on it in the Processes tab and selecting the End Process option. Also, what you need to do is delete the dangerous files from their File Location folder.

    Step3

    As soon as you switch on your computer, there may already be startup items associated with the ransomware running on it. Therefore, the next thing that you need to do is you should check the Startup Tab in System Configuration and see what startup items have been configured to start when your computer launches. 

    System Configuration may be launched by typing msconfig into the Start menu search box and pressing Enter. Click the “Startup” tab at the top of the new window to see the startup items listed there:

    msconfig_opt

    There, you’ll see a list of startup entries associated with the programs you’ve installed. Remove the checkmarks from anything with an unknown manufacturer or a weird name after carefully inspecting it. Click the OK button to save your changes.

    Please bear in mind that ransomware often disguises itself as another application in order to avoid detection. As a result, you must carefully review the list of startup items available online before trying to deactivate any of them.

    Step4

    The persistence of ransomware infections like Tisc is frequently attributed to the addition of damaging registry entries, which are difficult to detect and remove. If you want to deal with Tisc effectively, however, you should make sure that you remove any such entries by using the Registry Editor because if you don’t the ransomware may reinstall itself when you reset your computer.

    To open the Registry Editor, type regedit in the Windows search bar (in the Start menu). Then press CTRL+F to open a Find window inside the Editor. Type the name of the ransomware in it and use the Find Next button to scan your registry for ransomware-related entries, then delete any you find. 

    Attention! When deleting registry entries, take care not to inadvertently do damage to your system. Use a professional registry cleaning tool like the one we suggest here if you aren’t sure what you’re deleting. This will ensure that your computer’s records are free of any harmful software.

    Once you’ve completed the registry cleanup, use the Start menu search bar to search for the following items by copying and pasting them into the box and hitting Enter:

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

    To be on the safe side, keep an eye out for new files and folders with suspicious-looking names or entries that seem to be associated with the ransomware. If you strongly believe that a given file or a folder belongs to the infection, carefully delete it.

    Open Temp, then select and delete all the files in there, because there is a high probability  that there could be files generated by the ransomware itself in there.

    Step5

     If you suspect your PC has been hacked, you should take the following steps:

    Open the Start menu, copy the line below into the search box, and then press the Enter key:

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

    See whether there are any suspicious-looking IP addresses under Localhost in the file’s content, such as those in the example image below:

    hosts_opt (1)

    If you see anything strange in your Hosts file that concerns you, please let us know in the comments section under this post, and a member of our team will do their best to assist you.

    How to Decrypt Tisc files

    Prior to attempting a file recovery, you must have the ransomware fully removed from your computer. If you don’t get rid of the ransomware completely, it may encrypt data you’ve previously recovered or, even worse, lock the backup sources you’ve connected to the infected machine.

    For this reason, we highly recommend you to perform a full anti-virus check on your PC before beginning any file recovery process. If your scan reveals no threats, please feel free to use our comprehensive file decryption instructions

    If you have any issues, please let us know in the comments section below, and we’ll be happy to help.

    What is Tisc?

    Tisc is a malware infection that launches an encryption process in the attacked computer – this encryption locks up important user files, making them inaccessible through regular means. The purpose of the Tisc encryption is to blackmail the attacked user for the decryption key.

    This type of malware attack is very common and has been a major problem for the past 6-7 years. Ransomware, unlike most other software threats, usually lacks the ability to damage anything on the computers it attacks. Instead, its primary goal is to block the access to different user files that are likely to be important to the user. The encryption process used to achieve this oftentimes makes it next to impossible to access the targeted files without a special key. That key is offered to the Ransomware victims by the creators of the malicious program in exchange for a sizeable amount of money. If the requested sum is not paid, the files could remain locked forever.

    Is Tisc a virus?

    Tisc is a special type of virus that, rather than harming your data, it locks it up and then demands a ransom to release the data. Once the Tisc virus locks your data, it will show a message on your screen with ransom-payment instructions.

    If you’ve been attacked by this malicious virus, it’s important to avoid panicking and instead use your common sense to accurately assess the situation you are in, so that you’d be able to make the most optimal decision. Obviously, if the files that got locked are really important to you, you’d want them recovered, but even then paying the ransom is generally discouraged due to the high chance of not getting anything in return for the sum you send to the hackers. There are certain methods that can be tried in order to circumvent the ransom-payment requirement, and we will tell you about them in a special guide.

    On the other hand, if the files locked by the virus aren’t of particular importance to you, there’s absolutely no reason to even consider paying the ransom. The virus itself can be removed, and the way to do this is shown on the current page.

    How to decrypt Tisc files?

    To decrypt Tisc files, it’s best to try as many different alternative methods as possible before you consider the payment variant. To use alternative recovery methods to decrypt Tisc files, remember that you must first ensure that the threat is no longer in the system.

    The only situation in which it would not be a bad idea to send the demanded sum to the blackmailers behind Tisc is if you’ve exhausted all other options, and you really need to get back the files that got locked. Only if the importance of those files makes the risk of wasting your money worth it should, you try this recovery option. After all, the people responsible for the data decryption are dishonest cyber-criminals, and you have no reason to trust them. Even if they’ve given you the option to test-decrypt one or two files to see that they have a decryption key, there’s no guarantee that the key would be given to you after the money has been paid.

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    About the author

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    Brandon Skies

    Brandon is a researcher and content creator in the fields of cyber-security and virtual privacy. Years of experience enable him to provide readers with important information and adequate solutions for the latest software and malware problems.

    4 Comments

      • Hi :D,
        Tisc virus is one of the latest DJVU/Stop ransomware variants. If you are infected with an online ID, decryption is impossible, but if you are infected with an offline ID you can use the Emsisoft Decryptor on this page

    • Hi my laptop keeps opening each and every file,exe’s ,pictures and music using the tisc file format,it shows that a notepad logo i cant access anything,please help!

      • Hi Oscar,
        Tisc is one of the latest DJVU/Stop ransomware virus variants. If you are infected with an online ID, decryption is impossible. IF you are infected win an offline ID then you can use the Emsisoft deryptor on this page

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