Cdtt – Ransomware
Cdtt is a malicious software application working as common ransomware. Michael Gillespie, the popular virus researcher, very first found this new name in the DJVU ransomware family.
Cdtt was developed for the sole purpose to encrypt all popular file types. Rationally, as soon as the encryption is effectively accomplished, the users are not able to get access to them. Cdtt ransomware adds its own “.cdtt” to all the encrypted files. For instance, the file “price_list.xls”, once modified by Cdtt, will be entitled as “price_list.xls.cdtt”. Once the file encryption is achieved, Cdtt puts its own special text file (_readme.txt) into all the folders that store the encrypted files.
The alert stated by _readme.txt requesting the random os very similar to the notices given by other ransomware threats coming from the DJVU family. The warning essentially shows that the files have been secured and the only solution to get access to it is to use an unique standalone key. Regretfully, this statement is absolutely true.
The approach to encrypt the files used by Cdtt is not completely looked into. Nevertheless, there is no doubt that each computer owner might be provided an unique decryption key, which is definitely special. It is extremely tough to recover the information without the proper key in location.
“Don’t worry, you can return all your files!”, from text file message:
One more peculiarity of the Cdtt ransomware is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the complete control by the scoundrels who have actually released the Cdtt virus into the web. In order to get the key and restore the crucial information, the users are told to get in touch with the frauds through email or by telegram and to pay the ransom in the quantity of $980.
The message likewise says that the people must call the Cdtt authors within 72 hours upon the minute of the information file encryption. The alert indicates that by doing so individuals will get a 50% discount rate, for that reason, the ransom quantity drops down to $490.
Cdtt crypted your data, nevertheless, it may not be the only hazard on your PC. Plus, the ransomware might be hidden deep in the system. To discover and delete the hazard entirely, we advise you to refer to the aid of GridinSoft Anti-Malware tool.
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No matter what the amount of the ransom is, we highly encourage that you do not pay the ransom. There is no warranty that these online criminals will keep their promises, so they might not care at all what the victims feel about the file encryption, even when the quantity of the ransom is gotten into their accounts. For this reason, paying ransom frequently does not result in a successful healing. So, the users may simply lose their money for nothing.
Similarly, we advise you not to get in touch with the scams as they advise. Do not transfer money into their wallets. There are no applications that could split the Cdtt virus or bring back the information at no charge. Therefore, the only proper choice is to restore the information from possible backups (if available).
Virus Summary
| Name | Cdtt Ransomware |
| File Extension | cdtt |
| Type | Ransomware |
| Family | DJVU |
| Short Description | The ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files. |
| Symptoms | File encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .cdtt extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Cdtt Removal Tool | GridinSoft Anti-Malware |
| Cdtt Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Internet is now filled with infections comparable to the Cdtt virus. For example, this specific danger is essentially similar to Brusaf and other ransomware-type infections. These harmful utilities have been developed in order to secure the crucial information and reveal the demand for the users to pay the ransom. All these infections use the identical algorithm to generate the specific key for successful data decryption.
Unless the Cdtt ransomware is still under the development procedure or has actually got some hidden bugs, it is not possible to bring back the data by hand. Thus, the only working solution to prevent the loss of your important data is to frequently maintain current backups of all your important files.
Another important piece of guidance is to store the backups on unique storage not linked to your primary PC. For instance, you might store it on the USB Flash Drive, or some external disk drive, or by using the cloud data storage services. Keeping the backups on your regular drive is very dangerous, considering that the backup might likewise be encrypted by the Cdtt infection.
Leaks for the Cdtt ransomware attack.
Cdtt uses lots of courses to penetrate the susceptible computer systems. It is not particular what specific method was utilized in your case, nevertheless, the invasion may take place through the following channels:
- bundling with third-party programs, primarily freeware;
- spam e-mails from the unidentified senders;
- sites offering complimentary hosting;
- P2P (peer-to-peer) torrent software.
There are times when the Cdtt ransomware might camouflage itself as some genuine application, for instance, through the misleading notifies demanding installation of some software application update. This is the most typical technique used by the frauds to inject the Cdtt infection files into the system. This way users partly participate in its installation, without clearly understanding the threat.
Additionally, the frauds might send unsolicited spam email with difficult signals encouraging the people to open suspicious accessories or click some download links, for instance, those motivating individuals to open specific images, text files, tax files and other information.
No doubt, opening these files or clicking the harmful links may basically damage the system. Fake Media Player update alerts may cause the Cdtt ransomware infiltration. Similarly, downloading the broken software application might additionally include the ransomware installer. The last however not the least, installation of Cdtt might take place through some Trojan horses that might be installed stealthily into the system and without the user’s direct permission or even approval.
Avoiding the Cdtt virus injection.
Naturally, there is no outright assurance that your computer will be constantly without any malware attacks, nevertheless, we wish to share some beneficial tips with you to make it much safer. Make sure to pay very close attention while searching the web and particularly while getting cost-free programs. Do not open any dubious email attachments, specifically if the sender is not known to you.
Do not forget that specific freeware installer may likewise contain some other additional apps in the package. These additional applications may be really harmful. It is of utmost significance to keep your anti-virus software application and your operating system in basic to be constantly appropriately updated.
It is rather logical that downloading pirated software is illegal, nevertheless, furthermore, such unauthorized programs use may also bring major damage to your computer. For this reason, do not download any split programs. Plus, the reality that your existing anti-virus did not safeguard the system from the Cdtt ransomware is an excellent factor for you to reassess your choices and switch to another program that can render the protecting functions on a better level.
Below please find the quotation from the Cdtt text file:
ATTENTION! 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: https://we.tl/t-2P5WrE5b9f 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: restorealldata@firemail.cc Reserve e-mail address to contact us: gorentos@bitmessage.ch Our Telegram account: @datarestore
Screenshot of files with “.cdtt” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Cdtt ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can download GridinSoft Anti-Malware by clicking the button below:
2. Double-click on the setup file.
When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
3. Press Install button for run GridinSoft Anti-Malware.
3.Once installed, GridinSoft Anti-Malware will automatically run.
4. Wait for the GridinSoft Anti-Malware scan to complete.
GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
5. Click on “Clean Now”.
When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
Use Emsisoft Decryptor for restore cdtt files
You can download Emsisoft Decryptor by clicking the button below:
- Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
- Once the license terms are accepted, the primary decryptor user interface opens.
- By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
- Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
- After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
- The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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