Removal of Maktub ransomware

What is Maktub?

Maktub is ransomware distributed via zipped Word documents. Once the file is extracted and opened, Maktub infiltrates the system and encrypts files stored on the victim's computer. Maktub ransomware adds a .NORV, .gyul (or other random) extension to each file encrypted, thus, making it straightforward to determine which files are encrypted.

After encryption, Maktub opens a window containing a message stating that the files are encrypted and that user must pay a ransom to decrypt them. It is also stated that the ransom must be paid within the given time frame, otherwise encryption will become impossible.

The message states that the victim must pay the ransom within 12 hours. Be aware that the algorithm used to encrypt the files generates two keys - public and private. The private key is stored on remote servers controlled by cyber criminals. Therefore, if the ransom is not paid within the given time frame, the key will supposedly be deleted.

It is impossible to decrypt the files without this key. The displayed window also contains step-by-step payment instructions. To pay, users must download the Tor browser, go to Maktub's website, and follow the further instructions. Note that Maktub developers allow victims to decrypt a number of files free of charge as an 'insurance'.

Currently, the size of ransom is unknown, however, ransomware-type malware often makes demands for 0.5 - 1.5 Bitcoin ($204.55 - $613.65). Unfortunately, at time of research, there were no tools capable of decrypting files affected by Maktub. Therefore, the only and best solution to this problem, is to restore your system from a backup.

Screenshot of a message encouraging users to contact the developers of Maktub ransomware to decrypt their compromised data:

Maktub is simply another ransomware program and, therefore, shares many similarities with Teslacrypt, Locky, CryptoWall, Surprise, Vault, and many other viruses. All are designed to stealthily infiltrate the system and encrypt stored files. The main differences between these viruses are the size of ransoms demanded and types of algorithms used to encrypt the files.

It is highly probable that your files will remain encrypted even if you pay the ransom. Paying is equivalent to sending your money directly to cyber criminals - you merely support their malicious business. For this reason, you should never attempt to contact cyber criminals or pay their ransoms.

Ransomware is often distributed via P2P networks (for example, Torrents), malicious email attachments, fake software updates, and trojans and, therefore, you should be cautious when downloading files from untrusted sources and opening attachments sent from unrecognized emails.

In addition, all installed applications should be kept up-to-date and using a legitimate anti-virus, or anti-spyware suite is paramount.

Threat Summary:

Name	Maktub virus
Threat Type	Ransomware, Crypto Virus, Files locker
Encrypted Files Extension	Random string.
Ransom Demanding Message	Pop-up windows, HTML files, websites in TOR network.
Detection Names	Avast (Win32:Filecoder-AD [Trj]), BitDefender (Trojan.Agent.CCGV), ESET-NOD32 (Win32/Filecoder.MaktubLocker.B), Kaspersky (Trojan-Downloader.Win32.Cabby.zipxi), 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)	To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner. ▼ Download Combo Cleaner To use full-featured product, you have to purchase a license for Combo Cleaner. 7 days free trial available. Combo Cleaner is owned and operated by Rcs Lt, the parent company of PCRisk.com read more.

Text presented by the Maktub demanding a ransom within a pop-up window:

WARNING!

Your personal files are encrypted!

Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the key. The server will eliminate the key after a time period specified in this window.

Open hxxp://bs7aygotd2rnjl40.onion.link
or hxxp://bs7aygotd2rnjl40.torstorm.org
or hxxp://bs7aygotd2rnjl40.tor2web.org
in your browser. They are public gates to the secret server.

If you have problems with gates, use direct connection:
1) Download TOR Browser from hxxp://torproject.org
2) In the Tor Browser open the hxxp://bs7aygotd2rnjl40.onion.link

(Note that this server is available via Tor Browser only. Retry in hour if site is not reachable).

Write in the following public key in the input form on server:

Appearance of Maktub ransomware's pop-up window (GIF):

Appearance of Maktub ransomware's HTML file (GIF):

Screenshot of a MS Word document opened once the malicious executable is opened:

Text presented within this file:

RECHNUNG
Status:
Ausstehende Zahlung
Beschreibung    Menge    Preis    Betrag
MwSt. 19%:
Gesamt:

Maktub ransomware website homepage ('Hello'):

Text presented within this page:

HELLLO!

We're very sorry that all of your personal files have been encrypted. But three are good news - they aren't gone, you still have the opportunity to restore them! statistically, the lifespan of a hard-drive is anywhere from 3 to 5 years. If you don't make copies of important information, you could lose everything! Just imagine! In order to receive the program that will decrypt all of yours files, you will need to pay a certain amount. But let'start with something else...

Maktub ransomware pricing ('How much does it cost?'):

Text presented within this page:

HOW MUCH DOES IT COST?

We hope that you are convinced that we can decrypt all of yours files. Now, the most important thing! The faster you transfer the money, the cheaper file decryption will be. At every stage of payment, you get 3 days or 72 hours. You can see the countdown in the right top corner. After the clock shows 00:00:00 you go to the next stage of payment and the price automatically increases. We only accept the electronix currency Bitcoin as a form of payment. Here is sa table that shows the date of payment and the price. Your current stage is marked in yellow.

Stage Time of payment How much money should be sent

1      During the first 3 days      x BTC
2      From 3 to 6 days           x BTC
3      From 6 to 9 days           3333
4      From 9 to 12 days         102043 bytes
5      From 12 to 15 days        102043 bytes
6      More than 15 days         102043 bytes

After 15 days of no payment, we do not quarantee that we saved the key. This site can be disconnected at any moment and you will lose your data forever. Please take this seriously.

Maktub payment instructions ('Where do I pay?'):

Text presented within this page:

WHERE DO I PAY?

The whole process of payment confirmation is automated! You won't have to wait while we manually check the status of the incoming payment. As soon as you send the money, it will only take a few hours for the system to automatically count them and create the program that will decode your file.

After sending your payment just refresh this site after a couple of hours.

You must transfer BTC to the following address:

1H6UDZapNPyipNHYgmGS89WvqbovvP8ny8

Maktub ransomware allowing users to 'decrypt files for free' ('We are not lying!'):

Text presented within this page:

WE ARE NOT LYING!

Googling " MAKTUB LOCKER" will instantly bring up many suggestions on deleting the program from your personal computer. But not one of the third party programs will be able to do the most important thing - to decrypt your files! In order to do this, you need to have the private master-key that only we have. And only we can restore all of your files. And to show that we aren't making unfounded statements, we'll prove it. Upload any encrypted file,no larger than 200kb, and we will decrypt it, absolutely free!

File available to decrypt:2

Maktub ransomware removal:

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner 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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Video suggesting what steps should be taken in case of a ransomware infection:

Quick menu:

• What is Maktub virus?
• STEP 1. Reporting ransomware to authorities.
• STEP 2. Isolating the infected device.
• STEP 3. Identifying the ransomware infection.
• STEP 4. Searching for ransomware decryption tools.
• STEP 5. Restoring files with data recovery tools.
• STEP 6. Creating data backups.

Reporting ransomware to authorities:

If you are a victim of a ransomware attack we recommend reporting this incident to authorities. By providing information to law enforcement agencies you will help track cybercrime and potentially assist in the prosecution of the attackers. Here's a list of authorities where you should report a ransomware attack. For the complete list of local cybersecurity centers and information on why you should report ransomware attacks, read this article.

List of local authorities where ransomware attacks should be reported (choose one depending on your residence address):

•  USA - Internet Crime Complaint Centre IC3
•  United Kingdom - Action Fraud
•  Spain - Policía Nacional
•  France - Ministère de l'Intérieur
•  Germany - Polizei
•  Italy - Polizia di Stato
•  The Netherlands - Politie
•  Poland - Policja
•  Portugal - Polícia Judiciária

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:

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

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".

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":

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).

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).

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).

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):

Example 2 (.iso [Phobos] ransomware):

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

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 the Recuva tool developed by CCleaner. 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). In addition, the recovery feature is completely free.

Step 1: Perform a scan.

Run the Recuva application and follow the wizard. You will be prompted with several windows allowing you to choose what file types to look for, which locations should be scanned, etc. All you need to do is select the options you're looking for and start the scan. We advise you to enable the "Deep Scan" before starting, otherwise, the application's scanning capabilities will be restricted.

Wait for Recuva 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 hundred 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:

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:

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 the necessary information on Microsoft's documentation web page.

Data backups: One of the most reliable backup methods 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 the 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, although it's a really rare occasion.

We recommend using Microsoft OneDrive for backing up your files. OneDrive lets you store your personal files and data in the cloud, sync files across computers and mobile devices, allowing you to access and edit your files from all of your Windows devices. OneDrive lets you save, share and preview files, access download history, move, delete, and rename files, as well as create new folders, and much more.

You can back up your most important folders and files on your PC (your Desktop, Documents, and Pictures folders). Some of OneDrive’s more notable features include file versioning, which keeps older versions of files for up to 30 days. OneDrive features a recycling bin in which all of your deleted files are stored for a limited time. Deleted files are not counted as part of the user’s allocation.

The service is built using HTML5 technologies and allows you to upload files up to 300 MB via drag and drop into the web browser or up to 10 GB via the OneDrive desktop application. With OneDrive, you can download entire folders as a single ZIP file with up to 10,000 files, although it can’t exceed 15 GB per single download.

OneDrive comes with 5 GB of free storage out of the box, with an additional 100 GB, 1 TB, and 6 TB storage options available for a subscription-based fee. You can get one of these storage plans by either purchasing additional storage separately or with Office 365 subscription.

Creating a data backup:

The backup process is the same for all file types and folders. Here’s how you can back up your files using Microsoft OneDrive

Step 1: Choose the files/folders you want to backup.

Click the OneDrive cloud icon to open the OneDrive menu. While in this menu, you can customize your file backup settings.

Click Help & Settings and then select Settings from the drop-down menu.

Go to the Backup tab and click Manage backup.

In this menu, you can choose to backup the Desktop and all of the files on it, and Documents and Pictures folders, again, with all of the files in them. Click Start backup.

Now, when you add a file or folder in the Desktop and Documents and Pictures folders, they will be automatically backed up on OneDrive.

To add folders and files, not in the locations shown above, you have to add them manually.

Open File Explorer and navigate to the location of the folder/file you want to backup. Select the item, right-click it, and click Copy.

Then, navigate to OneDrive, right-click anywhere in the window and click Paste. Alternatively, you can just drag and drop a file into OneDrive. OneDrive will automatically create a backup of the folder/file.

All of the files added to the OneDrive folder are backed up in the cloud automatically. The green circle with the checkmark in it indicates that the file is available both locally and on OneDrive and that the file version is the same on both. The blue cloud icon indicates that the file has not been synced and is available only on OneDrive. The sync icon indicates that the file is currently syncing.

To access files only located on OneDrive online, go to the Help & Settings drop-down menu and select View online.

Step 2: Restore corrupted files.

OneDrive makes sure that the files stay in sync, so the version of the file on the computer is the same version on the cloud. However, if ransomware has encrypted your files, you can take advantage of OneDrive’s Version history feature that will allow you to restore the file versions prior to encryption.

Microsoft 365 has a ransomware detection feature that notifies you when your OneDrive files have been attacked and guide you through the process of restoring your files. It must be noted, however, that if you don’t have a paid Microsoft 365 subscription, you only get one detection and file recovery for free.

If your OneDrive files get deleted, corrupted, or infected by malware, you can restore your entire OneDrive to a previous state. Here’s how you can restore your entire OneDrive:

1. If you're signed in with a personal account, click the Settings cog at the top of the page. Then, click Options and select Restore your OneDrive.

If you're signed in with a work or school account,  click the Settings cog at the top of the page. Then, click Restore your OneDrive.

2. On the Restore your OneDrive page, select a date from the drop-down list. Note that if you're restoring your files after automatic ransomware detection, a restore date will be selected for you.

3. After configuring all of the file restoration options, click Restore to undo all the activities you selected.

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

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