Remove .charck Files Virus (STOP Ransomware)

Remove .charck Files Virus (STOP Ransomware)

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Ransomware dubbed .charck files virus has recently been detected in the wild. As identified by security researchers it belongs to the infamous STOP ransomware family. When started on a computer system this threat interferes with essential system settings and then encrypts valuable files. Since it utilizes a combination of two sophisticated cipher algorithms to encrypt target files, the latter remain completely unusable after this process. To mark corrupted files, .charck ransomware uses an extension of the same name. To extort a ransom fee for .charck files decryption, it drops a ransom note file called _readme.txt

If you are a victim of STOP .charck ransomware we recommend you to read thoroughly this removal guide. It will help you to remove .charck ransomware and give you some clues on how to potentially recover .charck files.

Threat Summary

Name.charck Files Virus
TypeRansomware, Cryptovirus
Short DescriptionCreated to encrypt valualbe files stored on compromised computers and afterward urges victims to pay ransom.
SymptomsFiles are encrypted and renamed with the .charck file extension. A ransom note file called _readme.txt is dropped and loaded on screen to extort ransom payment.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by .charck Files Virus


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss .charck Files Virus.
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.

.charck Files Virus – Distribution

It is most likely that hackers have launched massive e-mail spam campaigns that attempt to deliver the malicious payload file of .charck files virus on users’ devices. This technique is called malspam and it is associated with the spread of almost every ransomware that appears in the wild.

The e-mails which are part of malspam campaigns usually present file attachments of common types. To make you more prone to download and open the attachment on your computer system without considering the risk of this action, the text in these messages suggests that the presented file contains information of great importance. So files are usually introduced as:

  • Reports for closed accounts.
  • Banking documents.
  • Invoices for a purchase.
  • Receipt for a purchase.
  • Notification letters for a refund.
  • Documents for cancelled order.

The .charck ransomware may also be injected into the code of various corrupted websites. Once loaded in the browser, these websites could drop its payload on the background and activate it with the help of malicious scripts.

.charck Files Virus (STOP Ransomware) – Overview

A large number of STOP variants have been infecting online users since the end of 2017. Last week strains associated with the extensions .promored, .pulsar1, .promorad2 and .kroput have been released in active attack campaigns. Latest detections of STOP ransomware reveal that hackers shifted to a version that uses the extension .charck to mark files it corrupts.

When the so-called .charck files virus loads on your system it initiates a series of malicious operations that enable it to pass through several attack stages without being detected. To prevent being detected by active security measures, .charck ransomware could spawn certain Windows processes and keep running on the system disguised as a legitimate file.

Furthermore, the ransomware is likely to access the Windows Registry Editor and install malicious values under the keys that will enable its automatic execution on each system start. So while dealing with the removal of .charck crypto virus, make sure to check the registry keys Run and RunOnce for present malicious entries.

Soon after, the threat completes all attack stages it drops a text file named _readme.txt and loads it on computer’s screen. This file contains a ransom message that is telling the following:

———————————————- 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.
What guarantees do we give to you?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information
Don’t try to use third-party decrypt tools because it will destroy your files.
Discount 50% available if you contact us first 72 hours.
To get this software you need write on our e-mail:
Reserve e-mail address to contact us:
Your personal ID:
[redacted 43 alphanumeric chars]

According to this message, the only way to recover files is to pay hackers an unspecified ransom fee in cryptocurrency and obtain a decryption tool. However, please don’t forget that the authors of this message are cyber criminals. They can decide to fool you once again by sending you an ineffective decryption tool or even by neglecting your e-mail messages. So before you rush into contacting them and paying the demanded ransom do consider the help of the secure steps available in our removal guide.

.charck Files Virus – Encryption Process

During the encryption stage, .charck files virus activates a built-in encryption module that scans all drives for target files and encodes them with the help of two sophisticated cipher algorithms (AES and RSA). Following encryption, corrupted files cannot be opened. In addition, they have the extension .charck appended to their names.

Encrypted by this STOP ransomware variant could be:

  • Audio files
  • Video files
  • Document files
  • Image files
  • Backup files
  • Banking credentials, etc

Remove .charck Files Virus (STOP Ransomware) and Attempt to Restore Data

The so-called .charck files virus is a threat with highly complex code designed to corrupt both system settings and valuable data. So the only way to use your infected system in a secure manner again is to remove all malicious files and objects created by the ransomware. For the purpose, you could use our removal guide that reveals how to clean and secure your system step by step. In addition, in the guide, you will find several alternative data recovery approaches that may be helpful in attempting to restore files encrypted by STOP .charck ransomware. We remind you to back up all encrypted files to an external drive before the recovery process.

Gergana Ivanova

Gergana Ivanova

Gergana has completed a bachelor degree in Marketing from the University of National and World Economy. She has been with the STF team for three years, researching malware and reporting on the latest infections.

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