RansomwareRemoval Guide

Remove SIFRELI Virus (+Decrypt .SIFRELI_DOSYA files)

SIFRELI Virus Ransomware

The SIFRELI mean a ransomware-type infection. SIFRELI was elaborated particularly to encrypt all major file types. Once the file is encrypted people are not able to use them. SIFRELI adds the “.SIFRELI_DOSYA” extension for each file encrypted by it. For example, the file “myphoto.jpg“, once encrypted by SIFRELI, will be renamed into “myphoto.jpg.SIFRELI_DOSYA“. As soon as the encryption is completed, SIFRELI places a special text file into every folder containing the encrypted data.

The message given by SIFRELI text file requesting the ransom is absolutely the same as the statements given by other ransomware representatives. It literally discusses that the information is encrypted which the only way to bring back it is to use a a distinct decryption key. Sadly, this is absolutely true. The kind of cryptography mechanism used by SIFRELI is still not properly examined. Still, it is absolutely particular that each victim may be given the specific decryption key, which is completely unique. It is difficult to restore the files without the key available.

Another trick of SIFRELI is that the victims cannot get to the key. The key is stored on a particular server run by the frauds connected with SIFRELI ransomware. To get the key and recover the important info people have to pay the ransom.

Nevertheless, regardless of the asked for amount, people should keep away from paying the ransom. Cyber frauds are not fair, so they tend to completely disregard what their victims feel about the issue, even when the payment reaches their pockets. This is why paying the ransom typically does not provide any positive outcome and people just lose their money for nothing.

We highly recommend that you do not contact these crooks and absolutely do not transfer money into their accounts. It is said to admit that there are no utilities able to crack SIFRELI ransomware and to recover the information data free of charge. Thus, the only best decision is to recover the lost data from the available backup.

Virus Summary

NameSIFRELI Ransomware
File Extension.SIFRELI_DOSYA
TypeRansomware
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 and RSA encryption algorithms. Once the encryption is completed, the ransomware adds its special SIFRELI_DOSYA extension to all the files modified by it.
Distribution MethodSpam Emails, Email Attachments
Removal Tool   GridinSoft Anti-Malware

Remember that the web is now overwhelmed with threats that look similar to SIFRELI ransomware. Destructive programs of such kind are normally elaborated to encrypt crucial information and to set forth the demand prior to the user to pay the ransom. The peculiarity of all such ransomware threats is that all apply a similar algorithm to generate the special decryption key for information decryption.

Hence, as long as the ransomware is still being developed or has some hidden bugs, by hand recovering the information is simply not feasible. The only method to avoid the loss of your important information is to routinely create backups of your important information.

Keep in mind that even if you create such backups, they must be put into a special storage utility not connect to your main computer. You may use the Memory Stick or external hard drive for this purpose, or refer to the help of the cloud storage. If you store your backup files on your common system they may be encrypted together with other files, so it’s definitely not a good storage location.

How did ransomware infect my PC?

There are a number of methods used by online scams to distribute SIFRELI ransom virus. Despite the fact that it doubts how precisely SIFRELI injects your PC, there are some leaks through which it may penetrate the system:

  • integration with third-party software application, especially freeware;
  • spam e-mails from unknown senders;
  • sites rendering free hosting services;
  • pirated peer-to-peer (P2P) downloads.

Often SIFRELI virus might exist as some genuine software application, for instance, in the pop-ups advising users to carry out some crucial software updates. This is the common technique used by online scams to persuade people into downloading and installing SIFRELI infection manually, by methods of their direct participation in the installation process.

Additionally, the criminals may describe numerous email spam tactics to inject harmful codes into systems. So, they may refer to to sending unsolicited spam emails with tricky notices promoting users to download the attachments or click on certain download links, for example, the ones encouraging users to open some video, files, tax reports or invoices.

Needless to mention, opening such files or clicking on such dangerous links may seriously harm the PC. Fictitious Adobe Flash Player upgrade notifies may result in SIFRELI virus injection. When it comes to the cracked applications, these illegally downloaded programs may likewise contain malicious codes causing SIFRELI secret installation. Lastly, injection of SIFRELI may occur by means of Trojans that covertly get injected into the system and install harmful tools without the user’s consent.

Is there any method to prevent the injection of SIFRELI ransomware?

Even though there is no 100% guarantee to prevent your PC from getting infected, there are some pieces of recommendations we want to share with with you. First off, be really careful when you browse the web and particularly while downloading totally free programs. Keep away from opening suspicious email attachments, especially when the sender of the email is not familiar to you.

Bear in mind that some freeware installers may include other unwanted utilities in the bundle, so they may be harmful. Make certain that your current antivirus software and your entire operating system is always appropriately updated.

Naturally, downloading pirated software is unlawful and may lead to important damage to be produced your PC. Thus, stay away from downloading cracked software. You are likewise strongly advised to reconsider your existing security software and perhaps change to another security solution that can render far better services of defending your system.

Below please find the quotation from the SIFRELI text file:

Dosyalarinizin sifresini cozmek icin iletisime gecebilirsiniz.

iLetisim : sifremicoz@protonmail.com


=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Sifrelenen Dosyalarinizin Listesi
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+ C:\\bootTel.dat
[redacted file list]

Screenshot of files with “.SIFRELI_DOSYA” extension added by the ransomware:
SIFRELI Ransomware - encrypt files with .SIFRELI_DOSYA extension

Use GridinSoft Anti-Malware to remove SIFRELI 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

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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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