Cdxx Virus – Details
Cdxx is a malicious software working as typical ransomware. Michael Gillespie, the well-known malware researcher, very first found this new name in the DJVU ransomware family.
Cdxx was created for the sole function to encrypt all popular file types. Rationally, as quickly as the encryption is successfully accomplished, the users are not able to get access to them. Cdxx virus adds its own “.cdxx” to all the encrypted files. For example, the file “price_list.xls”, as soon as modified by Cdxx, will be entitled as “price_list.xls.cdxx”. Once the encryption is accomplished, Cdxx puts its own unique text document (_readme.txt) into all the folders that keep the encrypted files.
The message specified by _readme.txt requesting for the random os extremely comparable to the notices given by other ransomware risks coming from the DJVU family. The warning essentially indicates that the files have been encrypted and the only service to get access to it is to use a distinct standalone key. Regretfully, this statement is definitely real.
The approach to encrypt the files utilized by Cdxx is not completely looked into. However, there is no doubt that each computer owner may be released a special decryption key, which is absolutely distinct. It is very difficult to recover the information without the suitable type in place.
“Don’t worry, you can return all your files!”, from _readme.txt message:
One more peculiarity of the Cdxx infection is that the users are unable to get access to the key. The decrypting key is hosted on a special server under the total control by the crooks who have released the Cdxx infection into the internet. In order to get the key and bring back the essential data, the users are informed to connect with the scams by means of e-mail or by telegram and to pay the ransom in the amount of $980.
The message likewise states that the people need to contact the Cdxx authors within 72 hours upon the minute of the data file encryption. The alert indicates that by doing so the people will acquire a 50% discount, therefore, the ransom quantity drops down to $490.
Cdxx encrypted your data, nevertheless, it might not be the only danger on your computer. Plus, the ransomware may be concealed deep in the system. To discover and delete the hazard completely, we advise you to refer to the assistance of GridinSoft Anti-Malware app.
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No matter what the quantity of the ransom is, we highly advise that you do not pay the ransom. There is no warranty that these online scoundrels will keep their pledges, so they may not care at all what the victims feel about the file encryption, even when the amount of the ransom is gotten into their accounts. For this reason, paying ransom often does not result in an effective healing. So, the users might just lose their money for absolutely nothing.
Likewise, we urge you not to call the scams as they advise. Do not transfer money into their wallets. There are no applications that could crack the Cdxx ransomware or bring back the data for free. For that reason, the only correct decision is to bring back the data from possible backups (if available).
Virus Summary
| Name | Cdxx Ransomware |
| File Extension | cdxx |
| 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 .cdxx extension to all the files modified by it. |
| Distribution Method | Adware bundles and software cracks |
| Similar Infections | Lokas, Besub, Nusar |
| Cdxx Removal Tool | GridinSoft Anti-Malware |
| Cdxx Decryption Tool | Emsisoft Djvu Decryptor |
Do not forget that the Internet is now filled with infections comparable to the Cdxx ransomware. For instance, this specific hazard is essentially similar to Brusaf and other ransomware-type infections. These damaging energies have been developed in order to secure the crucial data and reveal the need for the users to pay the ransom. All these infections utilize the similar algorithm to generate the particular key for effective data decryption.
Unless the Cdxx ransomware is still under the advancement process or has got some concealed bugs, it is not possible to restore the data by hand. Thus, the only working option to prevent the loss of your crucial data is to regularly preserve current backups of all your vital files.
Another crucial piece of advice is to keep the backups on special storage not connected to your primary computer. For instance, you may save it on the USB Flash Drive, or some external hard disk drive, or by using the cloud data storage services. Keeping the backups on your system drive is really dangerous, given that the backup may likewise be encrypted by the Cdxx virus.
Leakages for the Cdxx ransomware attack.
Cdxx utilizes numerous paths to infiltrate the vulnerable computers. It is not specific what specific approach was used in your case, however, the invasion may occur via the following channels:
- bundling with third-party programs, primarily free software;
- spam e-mails from the unidentified senders;
- sites offering free hosting;
- P2P (peer-to-peer) torrent software.
There are times when the Cdxx ransomware may camouflage itself as some genuine application, for instance, through the misleading notifies demanding installation of some software update. This is the most typical trick utilized by the frauds to inject the Cdxx ransomware files into the system. In this manner users partly take part in its installation, without clearly understanding the risk.
Furthermore, the scams might send out unsolicited spam e-mail with tricky notifies encouraging individuals to open dubious attachments or click some download links, for instance, those encouraging individuals to open certain images, text files, tax documents and other information.
No doubt, opening these files or clicking on the harmful links may essentially damage the system. Fake Media Player upgrade alerts may lead to the Cdxx ransomware infiltration. Similarly, downloading the broken software application may in addition contain the ransomware installer. The last however not the least, setup of Cdxx might take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct approval or even consent.
Avoiding the Cdxx attack.
Obviously, there is no absolute guarantee that your computer system will be always without any malware attacks, nevertheless, we want to share some helpful tips with you to make it more secure. Make sure to pay really attention while browsing the web and particularly while getting cost-free programs. Do not open any dubious e-mail attachments, specifically if the sender is not known to you.
Do not forget that certain freeware installer may likewise include some other extra apps in the bundle. These additional applications may be very damaging. It is of utmost significance to keep your anti-virus software application and your os in general to be constantly appropriately updated.
It is quite sensible that downloading pirated programs is unlawful, however, additionally, such unapproved programs usage may also bring severe damage to your PC. Thus, do not download any cracked programs. Plus, the fact that your existing anti-virus did not secure the system from the Cdxx ransomware is a good factor for you to reassess your choices and change to another program that can render the protecting functions on a far better level.
Below please find the quotation from the Cdxx 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 “.cdxx” extension added by the ransomware:”
Use GridinSoft Anti-Malware to remove Cdxx ransomware from your computer
1.Download GridinSoft Anti-Malware.
You can get 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 cdxx files
You can get 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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