Another strain of Djvu Ransomware family, Vusad Ransomware has been recently detected by the cyber-security analysts. The Ransomware has been named Vusad as it renames the files by appending .vusad extension to the filenames after encryption.
The hackers behind the infamous Djvu Ransomware are introducing new variants every now & then will the sole motive of generating colossal illicit revenue.
Alike its siblings, Vusad is spreading its infection via spam e-mail attachments, untrustworthy software download sources, malware-laden luring coupons & links.
Once the system is infected, it searches for the targeted user & system files. When found, it encrypts the files & demands a handsome ransom amount in exchange of the unique key. Please note that this unique key is required to restore the encrypted data.
So, does paying the ransom to the hackers helps in getting the data back? What are the other ways to restoring the encrypted data? How can one completely remove Vusad Ransomware from the system? Continue to read to find answers to such questions-
|Operating System Impacted||Windows|
|Symptoms||Files are encrypted with .vasud extension & appearance of ransom-demanding note while trying to open the files.|
The attack of Vusad Ransomware begins with encrypting user & system files on the infected system. These files may include audio files, video files, image files & documents containing sensitive information of the user.
The files are encrypted with high-complex cryptographies such as RAS (Rivest–Shamir–Adleman) & AES (Advanced Encryption Standard). These encryption algorithms are used to generate a unique private key for every infected system. The private keys are stored on the hacker’s server.
Files once encrypted are appended with a malicious .Vusad extension. This extension makes the files unreadable & inaccessible to the victim.
A file named “presentation.ppt” might be renamed as “presentation.ppt.vusad” after encryption.
Certain file extensions that .Vusad file virus is capable of encrypting are mentioned below-
After the successful encryption of the targeted files, Vusad Ransomware drops a ransom-demanding note in every folder that contains .Vusad files. This note is in a text format & named “_readme.txt”.
The ransom-note appears every time a victim tries to access the encrypted files.
It explains the victims about the current situation of the system & instructions for the victims to get their data restored.
It states that paying ransom is the only way to restore the encrypted data. The decryption requires Vusad decryption tool & a private key, which is stored on the hacker’s server.
In order to obtain that, victims are required to pay a hefty ransom amount of $980 in Bitcoins to the hackers. The victims may write to the hackers on their e-mail ids- email@example.com & firstname.lastname@example.org.
The ransom-message further promises 50% discount on the ransom amount (i.e., $480 in bitcoins) to every victim that contacts hackers within 72 hours of the Vusad Encryption.
In order to take the victims into thinking that decryption is possible, the hackers offer to decrypt one .Vusad file free of cost. The victims are required to send any one file to the hackers on their e-mail id. The file sent for decryption must not contain any sensitive/important information.
After decryption, the file will be sent back to the victim as a guarantee of decryption.
Impacted users often tend to contact the hackers as they fear losing the data. However, contacting the hackers & paying the ransom doesn’t always yield positive results.
The analysis shows that victims often stop receiving response from the hackers after the payment has been made.
Therefore, the impacted users must act smart & do not let hackers extort their hard-earned money.
They may download Vusad Ransomware removal tool or follow guidelines mentioned below to delete Vusad virus from their system.
The Djvu Ransomware family ranks amongst the most wide-spread malware, reason being, it uses multiple distribution channels to spread its infection. It helps them increase the number of victims & possibility of generating huge money for themselves.
One of the most prevalent spread methods of Vusad crypto virus is Spam e-mail campaigns.
The e-mails sent by the hackers inform users about an undelivered package from legitimate shipping services such as FedEx or DHL. When users, out of curiosity, click on the infected attachments, links & files of the e-mail, Vusad Ransomware is installed on their system.
Other spread methods employed by hackers for the Vusad infection are:
STEP A: Reboot your system to Safe Mode
To restart the system to Safe Mode with Networking, if already switched ON then follow the below steps:
5 Click on the username and enter the password (if any).
STEP B: Delete the suspicious key from the Configuration Settings
STEP C: Remove Malicious Program from Command Prompt
Once the system starts, ensure to use an account with administrative privilege to access Safe Mode with Command Prompt.
After the user enters admin credentials, Command prompt window is displayed wherein you are entitled to enter the below commands:
STEP D: Restore the System Files & Settings
Continue to follow steps 4 & 5 of Method 2 to restore the System Files and settings.
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