BAT Virus 🔐 (.BAT Files) — How to Remove?

Written by Brendan Smith
The Bat virus falls under the Dharma ransomware family. Ransomware of such sort encrypts all user’s data on the PC (images, text files, excel sheets, audio files, videos, etc) and adds its specific extension to every file, creating the RETURN FILES.txt text files in every folder with the encrypted files.
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Bat virus: what is known so far?

☝️ A scientifically accurate designation for the Bat is “a Dharma family ransomware malicious agent”.

The renaming will be done by the following pattern: id-xxxxx.[contact-email].bat. In the process of encryption, a file entitled, for example, “report.docx” will be altered to “report.docx.id-1E857D00.[decryptyourdata@qq.com].bat”.

In each folder containing the encrypted files, a RETURN FILES.txt text file will be created. It is a ransom money memo. Therein you can find information on the ways of contacting the racketeers and some other information. The ransom note most probably contains a description of how to buy the decryption tool from the tamperers. You can obtain this decryptor after contacting decryptyourdata@qq.com by email. That is basically the scheme of the malefaction.

Bat outline:
NameBat Virus
Ransomware family1Dharma ransomware
Extension.bat
Ransomware noteRETURN FILES.txt
Contactdecryptyourdata@qq.com
DetectionVirTool:Win32/BeeInject, Trojan:Win32/RedLine.MBCI!MTB, Trojan.Win32.Maxpow
SymptomsYour files (photos, videos, documents) have a .bat extension and you can’t open them.
Fix ToolSee If Your System Has Been Affected by Bat virus

The RETURN FILES.txt file accompanying the Bat ransomware provides the following discouraging information:

All your data is encrypted!
for return write to mail:
decryptyourdata@qq.com

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

Bat Virus - encrypted .bat files

An example of encrypted .bat files.

How did my computer get infected with Bat ransomware?

There are many possible ways of ransomware infiltration.

Nowadays, there are three most exploited methods for malefactors to have ransomware acting in your digital environment. These are email spam, Trojan introduction and peer file transfer.

If you access your mailbox and see letters that look just like notifications from utility services providers, delivery agencies like FedEx, Internet providers, and whatnot, but whose mailer is unknown to you, beware of opening those letters. They are very likely to have a malware file enclosed in them. So it is even more dangerous to download any attachments that come with letters like these.

Another thing the hackers might try is a Trojan file scheme. A Trojan is an object that infiltrates into your PC pretending to be something legal. For instance, you download an installer for some program you want or an update for some software. But what is unpacked turns out to be a harmful program that compromises your data. Since the installation wizard can have any name and any icon, you have to make sure that you can trust the resource of the files you’re downloading. The best thing is to use the software developers’ official websites.

As for the peer-to-peer networks like BitTorrent 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 reasonable to scan the folder containing the downloaded files with the anti-malware utility as soon as the downloading is finished.

How do I get rid of the Bat virus?

It is important to inform you that besides encrypting your data, the Bat virus will most likely deploy Vidar Stealer on your PC to get access to credentials to different accounts (including cryptocurrency wallets). That spyware can extract your logins and passwords from your browser’s auto-filling data.

Often tamperers would decrypt several of your files so you know that they do have the decryption tool. As Bat virus is a relatively recent ransomware, anti-malware developers have not yet found a way to reverse its work. However, the anti-ransomware instruments are frequently upgraded, so the effective countermeasure may soon arrive.

Sure thing, if the malefactors do the job of encoding someone’s critical data, the desperate person will probably fulfill their demands. However, paying to racketeers does not necessarily mean that you’re getting your data back. It is still risky. After receiving the money, the racketeers may deliver a wrong decryption key to the victim. There were reports about malefactors simply vanishing after getting the ransom without even writing back.

The best safety measure against ransomware is to have aan OS restore point or the copies of your essential files in the cloud drive or at least on an external drive. Obviously, that might be insufficient. The most crucial thing could be that file you were working upon when it all happened. But at least it is something. It is also reasonable to scan your drives with the antivirus program after the OS restoration.

There are other ransomware products, besides Bat, that work similarly. Examples of those are Coty, Foza, Coza, and some others. The two basic differences between them and the Bat are the ransom amount and the method of encryption. The rest is almost identical: documents become inaccessible, their extensions changed, ransom notes are found in every folder containing encrypted files.

Some fortunate users were able to decode the arrested files with the aid of the free software provided by anti-ransomware experts. Sometimes the criminals mistakenly send the decryption code to the victims in the ransom readme. Such an epic fail allows the victim to restore the files. But naturally, one should never expect such a chance. Make no mistake, ransomware is a tamperers’ tool to lay their hands on the money of their victims.

How сan I avoid ransomware injection?

Bat ransomware doesn’t have a superpower, so as any similar malware.

You can defend your system from its infiltration within three easy steps:

  • Never open any letters from unknown senders with unknown addresses, or with content that has nothing to do with something you are waiting for (how can you win in a lottery without participating in it?). In case the email subject is likely something you are expecting, scrutinize all elements of the dubious email carefully. A fake email will always have mistakes.
  • Never use cracked or unknown programs. Trojans are often distributed as an element of cracked products, possibly under the guise of “patch” which prevents the license check. Understandably, dubious programs are very hard to distinguish from trustworthy software, because trojans sometimes have the functionality you seek. Try to find information about this software product on the anti-malware forums, but the best solution is not to use such software.
  • And finally, to be sure about the safety of the files you downloaded, scan them with GridinSoft Anti-Malware. This software will be a powerful defense for your system.
Reasons why I would recommend GridinSoft2

There is no better way to recognize, remove and prevent ransomware than to use an anti-malware software from GridinSoft3.

Download Removal Tool.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your computer.

Run Setup.exe

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

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your PC for Bat infections and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

GridinSoft Anti-Malware Scanning

Click on “Clean Now”.

When the scan has finished, 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

Frequently Asked Questions

🤔 Can I somehow access “.bat” files?

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

🤔 What should I do to make my files accessible as fast as possible?

If the “.bat” files contain some really important information, then you probably have them backed up. If not, there is still a function of System Restore but it needs a Restore Point to be previously saved. There are other ways to beat ransomware, but they take time.

🤔 If GridinSoft deletes the Bat malware, will it also delete my files that were encrypted?

Absolutely not! Your encrypted files are no threat to your PC.

With the help of GridinSoft Anti-Malware, you can clean your PC off the actual threats. The malware that has attacked your computer is most likely still active and launching checks every so often to encode any new files you might create on your computer after the infection. As it has been said above, the Bat virus does not come alone. It installs backdoors and keyloggers that can steal your account credentials and provide hackers with easy access to your PC after some time.

🤔 What should I do if the Bat ransomware has blocked my computer and I can’t get the activation code.

In such an unfortunate situation, you need to have a flash memory drive with a previously installed Trojan Killer. Use Safe Mode to do the cleaning. You see, the ransomware runs automatically as the system boots and encodes any new files created or brought into your PC. To block this process – use Safe Mode, which allows only the vital applications to run upon system start. Consider reading our manual on booting Windows in Safe Mode.

🤔 What could help the situation right now?

Some of the blocked files can be located elsewhere.

  • If you exchanged your important files through 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 to do it again.
  • Your messengers, social media pages, and cloud drives might have all those files too.
  • It might be that you still have the needed files on your old PC, a laptop, phone, flash memory, etc.

HINT: You can employ data recovery programs4 to get your lost data back since ransomware arrests the copies of your files, deleting the authentic ones. In the tutorial below, you can see how to use PhotoRec for such a recovery, but be advised: you can do it only after you eradicate the ransomware itself with an antivirus program.

Also, you can contact the following governmental fraud and scam sites to report this attack:

To report the attack, you can contact local executive boards. For instance, if you live in USA, you can have a talk with FBI Local field office, IC3 or Secret Service.

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Brendan Smith
How to Remove BAT Ransomware & Recover PC

Name: BAT Virus

Description: BAT Virus is a ransomware-type infections. This virus encrypts important personal files (video, photos, documents). The encrypted files can be tracked by a specific .bat extension. So, you can't use them at all.

Operating System: Windows

Application Category: Virus

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References

  1. My files are encrypted by ransomware, what should I do now?
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. More information about GridinSoft products: https://gridinsoft.com/products
  4. Here’s the list of the top 10 file recovery tools of 2021.

About the author

Brendan Smith

Journalist, researcher, web content developer, grant proposal editor. Efficient and proficient on multiple platforms and in diverse media. Computer technology and security are my specialties.

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