RETCH Ransomware 🔐 (.RETCH File) — Removal Guide

The Retch virus belongs under the ransomware type of infection. Malware of such sort encrypts all user’s data on the PC (images, documents, excel sheets, music, videos, etc) and adds its specific extension to every file, leaving the HOW TO RECOVER YOUR FILES.txt text files in every folder which contains the encrypted files.

What is known about the Retch virus?

Retch appends its specific .Retch extension to every file’s name. For instance, an image entitled “photo.jpg” will be renamed to “photo.jpg.Retch”. Likewise, the Excel sheet with the name “table.xlsx” will be altered to “table.xlsx.Retch”, and so on.

In every directory that contains the encrypted files, a HOW TO RECOVER YOUR FILES.txt text document will be created. It is a ransom money note. It contains information about the ways of paying the ransom and some other remarks. The ransom note most probably contains instructions on how to buy the decryption tool from the tamperers. That is basically the scheme of the malefaction.

Retch Overview:

Name Retch Virus
Extension .Retch
Ransomware note HOW TO RECOVER YOUR FILES.txt
Detection VirTool:Win32/CeeInject!KC, Trojan-Ransom.Win32.Blocker.ikgf, Win32/Filecoder.Spacecolon.A
Symptoms Your files (photos, videos, documents) have a .Retch extension and you can’t open them.
Fix Tool See If Your System Has Been Affected by Retch virus

In the screenshot below, you can see what a folder with files encrypted by the Retch looks like. Each filename has the “.Retch” extension added to it.

Retch Virus - encrypted .Retch files

That is how encrypted “.Retch” files look.

How did my machine catch Retch ransomware?

There is a huge number of possible ways of ransomware injection.

Nowadays, there are three most popular methods for hackers to have the Retch virus planted in your digital environment. These are email spam, Trojan introduction and peer-to-peer networks.

  • If you access your inbox and see emails that look like familiar notifications from utility services providers, delivery agencies like FedEx, web-access providers, and whatnot, but whose mailer is unknown to you, beware of opening those emails. They are most likely to have a malware item attached to them. So it is even riskier to open any attachments that come with letters like these.
  • Another thing the hackers might try is a Trojan horse model. A Trojan is a program that infiltrates into your machine pretending to be something different. Imagine, you download an installer of some program you want or an update for some program. However, what is unpacked reveals itself a harmful agent that encrypts your data. Since the installation file can have any title and any icon, you’d better be sure that you can trust the resource of the files you’re downloading. The best thing is to trust the software companies’ official websites.
  • As for the peer-to-peer file transfer protocols like torrents or eMule, the danger is that they are even more trust-based than the rest of the Web. You can never guess what you download until you get it. Our suggestion is that you use trustworthy websites. Also, it is a good idea to scan the folder containing the downloaded items with the antivirus as soon as the downloading is finished.

How to remove ransomware?

It is important to inform you that besides encrypting your files, the Retch virus will probably deploy Vidar Stealer on your computer to get access to credentials to different accounts (including cryptocurrency wallets). The mentioned spyware can extract your credentials from your browser’s auto-filling cardfile.

How сan I avoid ransomware infiltration?

Retch ransomware doesn’t have a endless power, neither does any similar malware.

You can armour yourself from its infiltration within several easy steps:

  • Never open any emails from unknown senders with strange addresses, or with content that has nothing to do with something you are expecting (how can you win in a money prize draw without participating in it?). In case the email subject is more or less something you are expecting, check all elements of the questionable email carefully. A hoax letter will always have mistakes.
  • Avoid using cracked or unknown software. Trojans are often shared as an element of cracked products, most likely under the guise of “patch” to prevent the license check. Understandably, potentially dangerous programs are very hard to tell from reliable software, as trojans sometimes have the functionality you seek. You can try to find information about this software product on the anti-malware forums, but the optimal solution is not to use such programs at all.

FAQ

🤔 How can I open “.Retch” files?Are the “.Retch” files accessible?

There’s no way to do it, unless the files “.Retch” files are decrypted.

🤔 The encrypted files are very important to me. How can I decrypt them quickly?

Hopefully, you have made a copy of those important files. In case you haven’t, there is still a chance that you do have a Restore Point from some time ago to roll back the whole system to the moment when it had no virus yet, but already had your files. All other solutions require time.

🤔 What to do if the Retch virus has blocked my computer and I can’t get the activation code.

🤔 What can I do right now?

Many of the encoded files might still be at your disposal

  • If you exchanged your critical files by email, you could still download them from your online mailbox.
  • You might have shared photographs or videos with your friends or family members. Just ask them to give those images back to you.
  • If you have initially got any of your files from the Web, you can try doing it again.
  • Your messengers, social media pages, and cloud storage might have all those files as well.
  • Maybe you still have the needed files on your old PC, a portable device, phone, external storage, etc.

USEFUL TIP: You can use file recovery utilities1 to retrieve your lost information since ransomware arrests the copies of your files, deleting the authentic ones. In the tutorial below, you can learn how to use PhotoRec for such a recovery, but be advised: you can do it only after you kill the ransomware itself with an antivirus program.

I need your help to share this article.

It is your turn to help other people. I have written this article to help users like you. You can use the buttons below to share this on your favorite social media Facebook, Twitter, or Reddit.
Brendan Smith

References

  1. Here’s the list of Best Data Recovery Software Of 2023.

About the author

Brendan Smith

Cybersecurity analyst covering malware families, suspicious files, and detection alerts. Brendan focuses on clear explanations of what a warning means, when it may be a false positive, and which cleanup steps are appropriate.

Leave a Comment