Remove and Decrypt!! File Extension Ransomware - How to, Technology and PC Security Forum |

Remove and Decrypt!! File Extension Ransomware

centrumfr-ransomware-shade-sensorstechforumRansomware variation, associated with the e-mail has been reported by malware researchers to use encryption to lock users out of their files and then leave a ransom note. The ransom note is named “Help to decrypt.txt” and it is very brief in it’s instructions on what to do. Everyone who has their files encrypted by the virus, should not contact the e-mail in any circumstances since a decryptor may be available for this ransomware variant. To remove this ransomware virus and attempt to restore your files, it is strongly advisable to read this article thoroughly.

Threat Summary!!
Short!! may be a part of the Shade/XTBL ransomware variants and may encrypt files with the AES-128 ciphers after which asks a ransom for decryption.
SymptomsFiles are encrypted and become inaccessible. A ransom note with instructions for paying the ransom shows as a .txt file. Encrypted files are appended the!! file extension
Distribution MethodSpam Emails, Email Attachments, File Sharing Networks.
Detection Tool See If Your System Has Been Affected by!!


Malware Removal Tool

User ExperienceJoin our forum to Discuss!! Ransomware.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive. Ransomware – How Does It Spread

To cause a successful infection, the virus may use a combination of tools. One of those tools may be a malicious executable that may be a Trojan.Downloader that drops the malware by downloading it from a third-party host or an Exploit Kit that uses exploits in Windows to cause an infection and drop the payload of Another type of infection may occur via malicious web links that may cause a browser redirect to the malicious website itself. Such links could be posted anywhere, from spam messages on forums to fake e-mails disguised as buttons, like the spam e-mail below:


After being clicked on, the malicious URL may cause an infection via a JavaScript or another type of malware by downloading and executing it without the user noticing. Ransomware – More Information

As soon as it has caused a successful infection, the virus may drop it’s payload by connecting to it’s C&C server and downloading it. The payload may be located in one or more of the several folders:

  • %AppData%
  • %Roaming%
  • %Local%
  • %SystemDrive%
  • %Windows%
  • %Temp%

After connecting to the remote server, the ransomware may also collect different information from the infected machine such as:

  • IP address.
  • Operating system information.
  • Nationality and language data.
  • Antivirus software installed (if any).

The Ransomware may also target the following registry keys to add values in them with the location of the malicious files so that they run when Windows boots up:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce “*”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “Centrumfr@india.com_{number}”
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce “*Centrumfr@india.com_{version}”

After the virus does the following, it may begin to encrypt the files of the infected computer. At this stage, it is unknown what types of files it may look for, but similar to other variants that use the e-mail as an extension, it may encode:

  • Most types of Videos.
  • Images.
  • Audio files.
  • Database files.
  • Microsoft Office documents.
  • Documents related to other widely used programs, like Adobe Reader, for example.

After encryption, the ransomware adds the e-mail address as a file extension to the encrypted files’ names. An encrypted file may or may not look like the following:!!

In addition to this, the virus also creates a unique type of file, named a ransom note. The file is called “Help to decrypt.txt” and is very brief in it’s message to the victim:

“All of your files are encrypted, to decrypt them write me to email:
Your key: {victim key}”

When we contacted the e-mail address, we received the following response:

→ Hello! Your files have been encrypted with cryptographic algorithm!
We suggest you purchase a decoder which
decrypt all your files in a fully automatic mode on the same day after
payment! (You not need to send any files to us). As we can guarantee – we can
decrypt files for free (2-3 total weight <= 5mb). For warranty decryption (if required) you should send to us archived test files in the response letter (even if you did it before). The cost of the decoder: 500$ (five hundred dollars). payment instructions: 1. Go to 2. Register (sign up) 3. You need to buy Bitcoins from people. (You can pay with any method, which is convenient to you) 4. Send purchased Bitcoins to our address listed below. If you have any questions, you can contact support this service, or email us. Our Bitcoin wallet: 13RtR9N5deidmhgVMqLvNR7BGW3tHbpEuF The guarantee to decrypt. 1) I give decrypted files for you, and you see - i have decryptor. 2) Making personal decoder for you - it takes just 3-5 minutes. After payments - everyone gets a personal decoder without exception. Write if you have any questions about the case. There is no bidding, requests to give free decoder and other unnecessary questions - will be ignored. According to the amount payable. Price for this day - 500$, it will be relevant for two days, starting from you wrote to me. After spending two days - the price of the decoder will increase every day on 250$. It mean, for example, after 4 days from the time you contact me, if you still have not paid the decoder - the amount will be 1000$. (except for two days without a price penalty). – Conclusion, Removal and File Decryption

The ransomware virus is believed by researchers to be a part of the Shade/XTBL ransomware variants. To remove Ransomware, we strongly urge you to follow the step-by-step removal instructions that are posted after this article. They are designed to help properly and methodologically get rid of this virus. In case you are not tech savvy, experts advise following instructions, like our Automatic removal instructions below that will help remove this and other viruses on your computer at a click of a button.

A decryptor has been released for the FenixLocker ransomware virus. In order to decrypt your files for free, we advise you to see the instructions in the web link below:
FenixLocker Decryption and Removal Instructions

Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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