FlatChestWare Virus Removal - Restore .flat Files

FlatChestWare Virus Removal – Restore .flat Files

This article will aid you to remove FlatChestWare ransomware effectively. Follow the ransomware removal instructions at the end.

FlatChestWare is the name of a ransomware cryptovirus. The ransomware is a variant of HiddenTear and is written to append the extension .flat after encryption to all files that get locked. The FlatChestWare virus displays a ransom note inside a window with a message stating that the ransom sum is demanded to be paid out in the Bitcoin cryptocurrency. The virus varies from other HiddenTear variants with showing a window, pretending that Windows wants to restart your PC to apply updates. Afterward your files get encrypted. Keep reading to see how you could try to potentially restore some of your data.

Threat Summary

TypeRansomware, Cryptovirus
Short DescriptionThe ransomware encrypts files on your computer and displays a ransom message afterward.
SymptomsThe ransomware will encrypt your files and put the extension .flat to them after it finishes its encryption process.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by FlatChestWare


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss FlatChestWare.
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.

FlatChestWare Virus – Infection Spread

FlatChestWare ransomware could spread its infection with various methods. A payload dropper which initiates the malicious script for this ransomware is being spread around the World Wide Web, and researchers have gotten their hands on a malware sample. If that file lands on your computer system and you somehow execute it – your PC will become infected. You can see the detections of such a file on the VirusTotal service right here:

FlatChestWare ransomware might also distribute its payload file on social media and file-sharing services. Freeware which is found on the Web can be presented as helpful also be hiding the malicious script for the cryptovirus. Refrain from opening files right after you have downloaded them. You should first scan them with a security tool, while also checking their size and signatures for anything that seems out of the ordinary. You should read the tips for preventing ransomware found in our forums.

FlatChestWare Virus – In-Depth Analysis

FlatChestWare is a virus that will encrypt your files and extort you to pay a ransom to get them back to normal. Malware researchers have discovered that it is a variant of the HiddenTear open-source project.

FlatChestWare ransomware might make entries in the Windows Registry to achieve persistence, and could launch or repress processes in a Windows environment. Such entries are typically designed in a way to launch the virus automatically with each start of the Windows operating system.

The FlatChestWare ransomware has been detected to have the function to pretend being part of the Windows updates. This is a window that it may be displayed when the ransomware is on your system, but still needs privileges to properly do malicious actions and then encrypt your files:

This is what that message states:

Windows Update

Restart your computer to finish installing
important updates
Windows can’t update important files and services while the
system is using them. Make sure to save your files before

Restart Now

That ransom note will be displayed inside a window with a picture and a message as shown below:

It reads the following:

You personal files have been encrypted, these files
being photos. videos. downloads. documents. and
many other files. Please do not attempt to remove this
program, any attempt to remove it could cause you to
be unable to recover your personal files. Only our
service can decrypt your files, so disable your anti-virus
and make no attempt to tamper with anything we have

Oh and don’t feel bad for clicking ‘Restart Now’ we
were already encrypting your files as soon as the
application launched.

Click the [HELP] button below if you wish to recover
your files.

Bitcoin Address:
Verify Payment

The note of the FlatChestWare ransomware states that your files are encrypted. The ransom stated as payment for potentially unlocking your files is demanded in the BitCoin cryptocurrency. However, you should NOT under any circumstances pay any ransom. Your files may not get restored, and nobody could guarantee that. Moreover, giving money to cybercriminals will likely motivate them to create more ransomware viruses or involve themselves into more criminal activities.

FlatChestWare Ransomware – Encryption Process

As FlatChestWare ransomware is a HiddenTear variant it could seek to encrypt files with these extensions:

→.txt, .doc, .docx, .xls, .xlsx, .pdf, .pps, .ppt, .pptx, .odt, .gif, .jpg, .png, .db, .csv, .sql, .mdb.sln.php, .asp, .aspx, .html, .xml, .psd, .frm, .myd, .myi, .dbf, .mp3, .mp4, .avi, .mov, .mpg, .rm, .wmv, .m4a, .mpa, .wav, .sav, .gam, .log, .ged, .msg, .myo, .tax, .ynab, .ifx, .ofx, .qfx, .qif, .qdf, .tax2013, .tax2014, .tax2015, .box, .ncf, .nsf, .ntf, .lwp

Every single file that gets encrypted will receive the same extension appended to it, which is .flat. The encryption algorithm which is implemented is undoubtedly AES since it is a variant of the HiddenTear open-source ransomware project.

The FlatChestWare cryptovirus could be set to erase all the Shadow Volume Copies from the Windows operating system with the help of the following command:

→vssadmin.exe delete shadows /all /Quiet

If the command stated above is executed that would make the encryption process more efficient as it will eliminate one of the ways for restoring your data. If your computer device was infected with this ransomware and your files are locked, read on through to find out how you could potentially recover your data.

Remove FlatChestWare Virus and Restore .flat Files

If your computer got infected with the FlatChestWare ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.


Berta Bilbao

Berta is a dedicated malware researcher, dreaming for a more secure cyber space. Her fascination with IT security began a few years ago when a malware locked her out of her own computer.

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