Djvu VirusRansomwareRemoval Guide

Udla Virus Removal Guide (+Decrypt .udla files)

Udla – Ransomware

Udla is a malicious software functioning as common ransomware. Michael Gillespie, the well-known virus researcher, very first discovered this new name in the DJVU ransomware family.

Udla was developed for the sole purpose to encrypt all popular file types. Realistically, as quickly as the file encryption is successfully accomplished, the users are not able to get access to them. Udla virus includes its own “.udla” to all the encrypted data. For instance, the file “price_list.xls”, once modified by Udla, will be entitled as “price_list.xls.udla”. When the file encryption is achieved, Udla puts its own distinct text document (_readme.txt) into all the folders that keep the encrypted files.

The alert mentioned by text file asking for the random os very comparable to the notices given by other ransomware threats belonging to the DJVU family. The warning basically shows that the information has been secured and the only option to get access to it is to use a distinct standalone key. Regretfully, this declaration is absolutely real.

The approach to encrypt the files used by Udla is not entirely researched. However, there is no doubt that each computer system owner may be issued a special decryption key, which is definitely special. It is extremely difficult to recuperate the information without the suitable type in location.

“Don’t worry, you can return all your files!”, from _readme.txt message:

Don't worry, you can return all your files! virus

One more peculiarity of the Udla infection is that the users are not able to get access to the key. The decrypting key is hosted on an unique server under the complete control by the scoundrels who have released the Udla infection into the internet. In order to obtain the key and bring back the important data, the users are told to contact the scams via e-mail or by telegram and to pay the ransom in the amount of $980.

The message likewise states that the people need to call the Udla 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 falls to $490.

No matter what the quantity of the ransom is, we highly encourage that you do not pay the ransom. There is no warranty that these online crooks will keep their guarantees, so they may 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 typically does not lead to an effective healing. So, the users might just lose their money for absolutely nothing.

Likewise, we prompt you not to contact the frauds as they advise. Do not transfer loan into their wallets. There are no applications that might break the Udla ransomware or bring back the information at no charge. Therefore, the only appropriate decision is to bring back the information from possible backups (if available).

Virus Summary

NameUdla Ransomware
File Extensionudla
Short DescriptionThe 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.
SymptomsFile 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 .udla extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Udla Removal Tool   GridinSoft Anti-Malware
Udla Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Web is now loaded with infections similar to the Udla ransomware. For example, this specific danger is essentially identical to Brusaf and other ransomware-type infections. These damaging utilities have actually been established in order to secure the essential data and express the need for the users to pay the ransom. All these infections use the similar algorithm to generate the specific key for effective data decryption.

Unless the Udla ransomware is still under the development procedure or has got some hidden bugs, it is not possible to restore the data manually. Therefore, the only working service to avoid the loss of your crucial information is to routinely maintain updated backups of all your essential data.

Another important piece of guidance is to store the backups on special storage not linked to your primary PC. For instance, you might keep 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 routine drive is extremely risky, considering that the backup might likewise be encrypted by the Udla virus.

Leaks for the Udla ransomware attack.

Udla utilizes lots of paths to penetrate the susceptible computer systems. It is not particular what particular method was used in your case, however, the intrusion might occur by means of the following channels:

  • bundling with third-party programs, generally freeware;
  • spam emails from the unidentified senders;
  • websites providing complimentary hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Udla might camouflage itself as some genuine application, for instance, through the misleading signals requiring setup of some software application update. This is the most typical trick utilized by the frauds to inject the Udla virus files into the system. In this manner users partially take part in its setup, without clearly comprehending the risk.

Furthermore, the scams may send out unsolicited spam e-mail with difficult notifies motivating the people to open suspicious accessories or click on some download links, for example, those motivating individuals to open particular photos, text files, tax documents and other info.

No doubt, opening these files or clicking on the malicious links may basically harm the system. Fake Media Player update notices may result in the Udla ransomware infiltration. Likewise, downloading the broken software may in addition include the ransomware installer. The last however not the least, setup of Udla may take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct authorization and even permission.

Preventing the Udla ransom virus injection.

Of course, there is no outright assurance that your computer will be constantly devoid of any malware attacks, however, we wish to share some beneficial suggestions with you to make it more secure. Make sure to pay very close attention while searching the web and particularly while getting cost-free programs. Do not open any suspicious email attachments, specifically if the sender is not known to you.

Do not forget that specific freeware installer may also include some other additional apps in the package. These extra applications may be extremely damaging. It is of utmost importance to keep your anti-virus software application and your os in basic to be always appropriately upgraded.

It is rather rational that downloading cracked apps is illegal, however, additionally, such unapproved software usage might also bring major damage to your PC. Thus, do not download any split programs. Plus, the reality that your existing anti-virus did not secure the system from the Udla ransomware is a good reason for you to reconsider your choices and switch to another program that can render the securing functions on a better level.

Below please find the quotation from the Udla text file:


 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:
 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:

 Reserve e-mail address to contact us:

 Our Telegram account:

Screenshot of files with “.udla” extension added by the virus:”

Udla Ransomware - encrypt files with .udla extension

Use GridinSoft Anti-Malware to remove Udla ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

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.
GridinSoft Anti-Malware
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.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

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.
GridinSoft Anti-Malware Scan

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.
GridinSoft Anti-Malware Scan Result

Use Emsisoft Decryptor for restore udla files

You can get Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. 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.
  4. 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.
  5. 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
  6. 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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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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One Comment

  1. Hi, my computer was infected by the udla virus, when I saw that I was infected I quickly Reset My Windows but in my F: Disk were all my Data (400GB+) is located all the archive / Files were like this .ai.udla or .jpg.udla, at that point what I did was to change all the names / extension of every file by using a Software that can remove extension, what happen next is that 90% of my files are somehow corrupted or encrypted Windows cannot open them even .exe (Software Setups) were affected, I am seeing that all the files have their own Size (Which is good) but my Illustrator, Music, RAR documents will not open, and I would like to know if there is an easy way to fix them.

    Oscar Curiel
    Graphic Designer

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