How to remove Adhubllka ransomware from the operating system

Also Known As: Adhubllka virus
Distribution: Low
Damage level: Severe

Adhubllka ransomware removal instructions

What is Adhubllka?

Discovered by S!Ri, Adhubllka is a malicious program classified as ransomware. Systems infected with this malware have their data encrypted and users receive ransom demands for appropriate decryption tools/software. When Adhubllka encrypts, it renames files by adding the ".ADHUBLLKA" extension. For example, a file originally named "1.jpg" would appear as "1.jpg.ADHUBLLKA" following encryption, and so on for all affected files. After this process is complete, a text file ("read_me.txt") containing the ransom message is created on the desktop.

The text file informs victims that their data has been encrypted and reassures them that it can be recovered. The compromised files (e.g. documents, photos, databases, etc.) have been encrypted with strongest encryption and a unique key. The message states that the only way to restore them is to purchase decryption tools/software and keys (individually generated for each victim) from the cyber criminals behind Adhubllka ransomware. The cost of these tools is not mentioned, however, a 50% discount is supposedly available should users establish contact with the malware developers within the first 72 hours. To receive further instructions, victims must send an email to the address provided. The message also alerts users that attempting to decrypt their files with third party software will render them undecryptable and damage them beyond repair. In most cases of ransomware attacks, decryption is impossible without the involvement of individuals responsible, unless the malicious program is still in development and/or has bugs/flaws. Regardless, you are strongly advised against communicating with and/or meeting the demands of cyber criminals. They can never be trusted and there are no guarantees that they will honor any agreement. Despite paying, users do not receive the promised decryption tools/software. Therefore, their data remains encrypted and useless, and they experience significant financial loss. Eliminating Adhubllka from the operating system will prevent it from further encryption. Unfortunately, removal will not restore already affected files. The only solution is to recover them from a backup, if one was made prior to the attack and was stored in a different location.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

Adhubllka decrypt instructions (read_me.txt)

Ransomware is designed to encrypt data and demand payment for decryption. SivoHorsedealOled, and Adair are some examples of malicious software belonging to this class. There are two main differences: the cryptographic algorithm they use (symmetric or asymmetric) and ransom size. The demanded payments usually vary between three and four digit sums (in USD). Cyber criminals tend to prefer digital currencies (mostly cryptocurrencies), since these transactions are difficult/impossible to trace. To ensure data integrity, you are advised to keep backups on unplugged storage devices and/or remote servers. It is best to store multiple backups in several separate locations.

How did ransomware infect my computer?

High-risk infections (ransomware and other malware) typically originate from dangerous files send during spam campaigns, via Trojans, illegal activation tools ("cracks"), fake updaters and untrusted download sources. "Spam campaign" is a term used to define deceptive emails sent on a mass scale. These messages are typically presented as "official", "important", "priority" or otherwise urgent mail. They have infectious files attached (or contain links leading to them). The file formats vary (e.g. archive and executable files, PDF and Microsoft Office documents, JavaScript, etc.). When they are opened, the infection process begins. Trojans are malware programs that have various dangerous capabilities, which can include the capability to cause chain infections. Illegal activation ("cracking") tools can download/install malicious software, rather than activating licensed products. Fake updaters infect systems by exploiting weaknesses of outdated programs and/or simply installing malware rather than the updates. Untrustworthy download channels such as unofficial and free file-hosting websites, Peer-to-Peer sharing networks (BitTorrent, eMule, Gnutella, etc.) and other third party downloaders can offer malicious software disguised as normal content and/or bundled with it.

Threat Summary:
Name Adhubllka virus
Threat Type Ransomware, Crypto Virus, Files locker.
Encrypted Files Extension .ADHUBLLKA
Ransom Demand Message read_me.txt
Cyber Criminal Contact pr0t3eam@protonmail.com
Detection Names Avast (Win32:Trojan-gen), BitDefender (Gen:Trojan.Heur.FU.cqW@aygBXYd), ESET-NOD32 (A Variant Of Win32/Filecoder.DeathRansom.B), Kaspersky (Trojan.Win32.Zudochka.dva), Full List Of Detections (VirusTotal)
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand payment of a ransom (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing Trojans and malware infections can be installed together with a ransomware infection.
Malware Removal (Windows)

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How to protect yourself from ransomware infections

Do not open dubious or irrelevant emails. Any attachments or links found in suspicious mail must never be opened, since they are a potential source of infection. All downloads should be performed through official and verified channels. The same extends to software activation and updating, which should only be done with tools/functions provided by legitimate developers. Illegal activation tools ("cracks") and third party updaters should be avoided, due to the high risk of malware installation. It is paramount to device/user safety to have a reputable anti-virus/anti-spyware suite installed. Keep these programs up to date and use them to perform regular system scans and removal of detected threats/issues. If your computer is already infected with Adhubllka, we recommend running a scan with Malwarebytes for Windows to automatically eliminate this ransomware.

Text presented in Adhubllka ransomware text file ("read_me.txt"):

ALL YOUR FILES ARE ENCRYPTED
Don't worry, you can return all your files!
All your files documents, photos, databases 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.
Don't try to use third-party decrypt tools because it will destroy your files.
Discount 50available if you contact us first 72 hours.
To get this software you need write on our e-mail:
pr0t3eam@protonmail.com 

Screenshot of files encrypted by Adhubllka (".ADHUBLLKA" extension):

Files encrypted by Adhubllka ransomware (.ADHUBLLKA extension)

Update July 13, 2020 - Cyber criminals have recently released an updated version of Adhubllka ransomware. This variant appends ".readme" extension, delivers "Read_Me.txt" ransom note and provides a website in Tor network:

Screenshot of this variant's text file:

Updated Adhubllka ransom note (Read_Me.txt)

Text presented within:

Attention!

All your files, documents, photos, databases and other important files are encrypted

The only method of recovering files is to purchase an unique decryptor. Only we can give you this decryptor and only we can recover your files.

The server with your decryptor is in a closed network TOR. You can get there by the following ways:

-------

1. Download Tor browser - hxxps://www.torproject.org/
2. Install Tor browser
3. Open Tor Browser
4. Open link in TOR browser:  hxxp://7rzpyw3hflwe2c7h.onion/?SEGHTVWY
5. Follow the instructions on this page

-------


On our page you will see instructions on payment and get the opportunity to decrypt 1 file for free.

Alternate communication channel here: hxxp://helpqvrg3cc5mvb3.onion

Screenshot of files encrypted by this ransomware (".readme" extension):

Files encrypted by updated Adhubllka ransomware

Appearance of the Tor website provided by this variant (GIF):

Website provided by updated Adhubllka ransomware

Text presented within:

"Buy Decryptor" tab:

 

Payment

To buy the decryptor you must pay:
0.399 Bitcoin ($3700)

You have 2 days for payment
time left: 47:54:14

After finishing offer, decryptor cost
will be 0.798 Bitcoin
After payment you can download the decryptor here:
DOWLOAD DECRYPTOR
Make a Bitcoin Payment
Payment amount: $3700

Send 0.399 BTC to the following address:
Simply scan QR Code with your mobile device or copy one in the input box

Awaiting 0.399 bitcoin payment ....
your wallet balance - 0 BTC  Reload current page

 


"How to get my files back" tab:

 

How to get my files back

To buy the decryptor you must pay:
0.399 Bitcoin ($3700)

You have 2 days for payment
time left: 47:54:14

After finishing offer, decryptor cost
will be 0.798 Bitcoin
After payment you can download the decryptor here:
DOWLOAD DECRYPTOR
ALL YOUR DOCUMENTS, PHOTOS, DATABASES AND OTHER IMP0RTANT FILES HAVE BEEN ENCRYPTED!

It means your files are NOT damaged! Your files are modified only. This modification is reversible.
From now it is not possible to use your files until they will be decrypted.
The only way to decrypt your files safely is to buy the special decryption software.
Any attempts to restore your files with the third-party software will be fatal for your files!
How to get Decryptor?

  1. Create a Bitcoin Wallet (we recommend Blockchain.info)
  2. Buy necessary amount of Bitcoins
    Here are our recommendations:
    blockchain.info
    localbitcoins.com
    google.com
  3. Send  0.399  to the following Bitcoin address: 1FZGY8pkVtW9F4CkEGLVsBbMGofFy6CmLc
  4. After the payment you get a link to download the decryptor software

 


Free decryptor tab:

 

Free decrypt

To buy the decryptor you must pay:
0.399 Bitcoin ($3700)

You have 2 days for payment
time left: 47:54:14

After finishing offer, decryptor cost
will be 0.798 Bitcoin
After payment you can download the decryptor here:
DOWLOAD DECRYPTOR
We give you the opportunity to decrypt 1 file free of charge!

Free decryption as guarantee.
Before paying you can send us 1 encrypted file for free decryption.

Note: File size no more than 500Kb.

Screenshot of this variant's process ("Tribunal de Grande Instance") in the Windows Task Manager:

Updated Adhubllka ransomware process in Windows Task Manager

Adhubllka ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Malwarebytes is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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Quick menu:

Isolating the infected device:

Some ransomware-type infections are designed to encrypt files within external storage devices, infect them, and even spread throughout the entire local network. For this reason, it is very important to isolate the infected device (computer) as soon as possible.

Step 1: Disconnect from the internet.

The easiest way to disconnect a computer from the internet is to unplug the Ethernet cable from the motherboard, however, some devices are connected via a wireless network and for some users (especially those who are not particularly tech-savvy), disconnecting cables may seem troublesome. Therefore, you can also disconnect the system manually via Control Panel:

  • Navigate to the "Control Panel", click the search bar in the upper-right corner of the screen, enter "Network and Sharing Center" and select search result:

Disconnecting computer from the Internet (step 1)

  • Click the "Change adapter settings" option in the upper-left corner of the window:

Disconnecting computer from the Internet (step 2)

  • Right-click on each connection point and select "Disable". Once disabled, the system will no longer be connected to the internet. To re-enable the connection points, simply right-click again and select "Enable".

Disconnecting computer from the Internet (step 3)

Step 2: Unplug all storage devices.

As mentioned above, ransomware might encrypt data and infiltrate all storage devices that are connected to the computer. For this reason, all external storage devices (flash drives, portable hard drives, etc.) should be disconnected immediately, however, we strongly advise you to eject each device before disconnecting to prevent data corruption:

  • Navigate to "My Computer", right-click on each connected device and select "Eject":

Ejecting external storage devices

Step 3: Log-out of cloud storage accounts.

Some ransomware-type might be able to hijack software that handles data stored within "the Cloud". Therefore, the data could be corrupted/encrypted. For this reason, you should log-out of all cloud storage accounts within browsers and other related software. You should also consider temporarily uninstalling the cloud-management software until the infection is completely removed.

Identify the ransomware infection:

To properly handle an infection, one must first identify it. Some ransomware infections use ransom-demand messages as an introduction (see the WALDO ransomware text file below).

Identify ransomware-type infection (step 1)

This, however, is rare. In most cases, ransomware infections deliver more direct messages simply stating that data is encrypted and that victims must pay some sort of ransom. Note that ransomware-type infections typically generate messages with different file names (for example, "_readme.txt", "READ-ME.txt", "DECRYPTION_INSTRUCTIONS.txt", "DECRYPT_FILES.html", etc.). Therefore, using the name of a ransom message may seem like a good way to identify the infection. The problem is that most of these names are generic and some infections use the same names, even though the delivered messages are different and the infections themselves are unrelated. Therefore, using the message filename alone can be ineffective and even lead to permanent data loss (for example, by attempting to decrypt data using tools designed for different ransomware infections, users are likely to end up permanently damaging files and decryption will no longer be possible even with the correct tool).

Another way to identify a ransomware infection is to check the file extension, which is appended to each encrypted file. Ransomware infections are often named by the extensions they append (see files encrypted by Qewe ransomware below).

Identify ransomware-type infection (step 2)

This method is only effective, however, when the appended extension is unique - many ransomware infections append a generic extension (for example, ".encrypted", ".enc", ".crypted", ".locked", etc.). In these cases, identifying ransomware by its appended extension becomes impossible.

One of the easiest and quickest ways to identify a ransomware infection is to use the ID Ransomware website. This service supports most existing ransomware infections. Victims simply upload a ransom message and/or one encrypted file (we advise you to upload both if possible).

Identify ransomware-type infection (step 3)

The ransomware will be identified within seconds and you will be provided with various details, such as the name of the malware family to which the infection belongs, whether it is decryptable, and so on.

Example 1 (Qewe [Stop/Djvu] ransomware):

Identify ransomware-type infection (step 4)

Example 2 (.iso [Phobos] ransomware):

Identify ransomware-type infection (step 5)

If your data happens to be encrypted by a ransomware that is not supported by ID Ransomware, you can always try searching the internet by using certain keywords (for example, ransom message title, file extension, provided contact emails, cryptowallet addresses, etc.).

Search for ransomware decryption tools:

Encryption algorithms used by most ransomware-type infections are extremely sophisticated and, if the encryption is performed properly, only the developer is capable of restoring data. This is because decryption requires a specific key, which is generated during the encryption. Restoring data without the key is impossible. In most cases, cyber criminals store keys on a remote server, rather than using the infected machine as a host. Dharma (CrySis), Phobos, and other families of high-end ransomware infections are virtually flawless, and thus restoring data encrypted without the developers' involvement is simply impossible. Despite this, there are dozens of ransomware-type infections that are poorly developed and contain a number of flaws (for example, the use of identical encryption/decryption keys for each victim, keys stored locally, etc.). Therefore, always check for available decryption tools for any ransomware that infiltrates your computer.

Finding the correct decryption tool on the internet can be very frustrating. For this reason, we recommend that you use the No More Ransom Project and this is where identifying the ransomware infection is useful. The No More Ransom Project website contains a "Decryption Tools" section with a search bar. Enter the name of the identified ransomware, and all available decryptors (if there are any) will be listed.

Searching for ransomware decryption tools in nomoreransom.org website

Restore files with data recovery tools:

Depending on the situation (quality of ransomware infection, type of encryption algorithm used, etc.), restoring data with certain third-party tools might be possible. Therefore, we advise you to use EaseUS Data Recovery Wizard Pro. This tool supports over a thousand data types (graphics, video, audio, documents, etc.) and it is very intuitive (little knowledge is necessary to recover data).

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EaseUS Data Recovery Wizard Pro

By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Trial version of EaseUS Data Recovery Wizard Pro is capable of scanning drives and listing recoverable files - to restore them, you must purchase a license.

Step 1: Perform a scan.

  • Hover your mouse over the partition you wish to scan and select "Scan". You can also select a specific folder, or click shortcut icons to scan the Desktop or Recycle Bin:

Scanning the storage drive with EaseUS Data Recovery Wizard PRO (step 1)

  • Wait for EaseUS Data Recovery Wizard Pro to complete the scan. The scanning duration depends on the volume of files (both in quantity and size) that you are scanning (for example, several hundreds gigabytes could take over an hour to scan). Therefore, be patient during the scanning process. We also advise against modifying or deleting existing files, since this might interfere with the scan. If you add additional data (for example, downloading files/content) while scanning, this will prolong the process:

Scanning the storage drive with EaseUS Data Recovery Wizard PRO (step 2)

Step 2: Recover data.

  • Once the process is complete, select the folders/files you wish to restore and simply click "Recover". Note that some free space on your storage drive is necessary to restore data. Note also that the trial version of EaseUS Data Recovery Wizard Pro is only capable of scanning drives and listing recoverable files - to restore them, you must purchase a license:

Recovering data with EaseUS Data Recovery Wizard Pro

Step 3: Save the scan session (optional).

  • We recommend that you save the scanning session once you have completed recovery, in case you decide to recover additional files later. Simply click the "Save Scan Session" icon in the upper-right corner of the screen and choose the location for the file to be saved. This will save a lot of time, since you will not need to re-scan the storage drive the next time you wish to restore something. Bear in mind, however, that data removed after the scanning session has finished will not be listed:

Saving scan session in EaseUS Data Recovery Wizard Pro

Create data backups:

Proper file management and creating backups is essential for data security. Therefore, always be very careful and think ahead.

Partition management: We recommend that you store your data in multiple partitions and avoid storing important files within the partition that contains the entire operating system. If you fall into a situation whereby you cannot boot the system and are forced to format the disk on which the operating system is installed (in most cases, this is where malware infections hide), you will lose all data stored within that drive. This is the advantage of having multiple partitions: if you have the entire storage device assigned to a single partition, you will be forced to delete everything, however, creating multiple partitions and allocating the data properly allows you to prevent such problems. You can easily format a single partition without affecting the others - therefore, one will be cleaned and the others will remain untouched, and your data will be saved. Managing partitions is quite simple and you can find all necessary information on Microsoft's documentation web page.

Data backups: The most reliable backup method is to use an external storage device and keep it unplugged. Copy your data to an external hard drive, flash (thumb) drive, SSD, HDD, or any other storage device, unplug it and store it in a dry place away from sun and extreme temperatures. This method is, however, quite inefficient, since data backups and updates need to be made regularly. You can also use a cloud service or remote server. Here, an internet connection is required and there is always the chance of a security breach. Therefore, you should consider using an application to create data backups locally.

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EaseUS Todo Backup

By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. To use full-featured product, you have to purchase a license for EaseUS Todo Backup. 30 days free trial available.

We recommend using the EaseUS Todo Backup application. The "Home" edition of EaseUS Todo Backup is usually more than adequate for regular users, however, the "Business" edition is more suitable for companies and large computer networks. The EaseUS Todo Backup application provides extensive data protection features. You can easily create backups, and encrypt and compress them for enhanced protection and storage saving purposes. It also allows you to set backup schedules, create bootable devices, and restore the system if a crash occurs. You can easily choose where to store the created backup: locally; uploaded to an external drive; FTP; cloud storage, or elsewhere. In summary, EaseUS Todo Backup is an all-in-one tool, which provides all features required to properly backup your data.

Creating a data backup:

The backup process is virtually identical regardless of the item (file, partition, entire system) you wish to backup. Taking the File Backup feature as an example:

Step 1: Choose which item to backup.

  • Click on the "Menu" icon in the upper-left corner of the screen to reveal the menu and select "File Backup":

Creating data backups with EaseUS Todo Backup tool (step 1)

  • Select the files you want to backup. You can also enter a name and description of the backup that will be created:

Creating data backups with EaseUS Todo Backup tool (step 2)

Step 2: Change the default settings.

The EaseUS Todo Backup application provides a variety of additional options that can be added/modified while creating the backup. For example, you can encrypt data (add a password), select the compression rate (how much the backup should be compressed), performance (how many system resources should be allocated), add an email notification (you receive an email once the process is complete) and so on.

  • To open the options window, click the "Backup options" button in the lower-left corner of the screen:

Creating data backups with EaseUS Todo Backup tool (step 3)

  • Select the settings you want to change and click "Save". You can also reset your changes by clicking "Reset to initial settings":

Creating data backups with EaseUS Todo Backup tool (step 4)

Step 3: Select the backup destination.

As mentioned above, EaseUS Todo Backup allows you to choose where backups are saved - locally or externally.

  • Click the "Browse..." button and select the location you want the backup to be saved:

Creating data backups with EaseUS Todo Backup tool (step 5)

Step 4: Safety measures and process completion.

Depending on the location you have chosen, there are a number of measures you should or should not take. If you are uploading to an internet-connected location (for example, Cloud storage, FTP, etc.), be sure to maintain your internet connection, otherwise you will have to start again. The same applies to external storage devices - do not unplug them until the process is complete.

  • The progress bar displays estimated time remaining until completion. Large backups (hundreds of gigabytes) can take hours to create (depending on storage device speed, internet connection, etc.). Therefore, the application also allows you to optionally choose what the system should do (shut down, sleep or hibernate) once the process has finished:

Creating data backups with EaseUS Todo Backup tool (step 6)

The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups.

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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