What Is HHJK Virus?
Hhjk virus is a nasty infection that belongs to a large scale operation, that is commonly known as the STOP/DJVU ransomware family. What this virus does is to get inside your computer system and then encrypt your files in order to hold them hostage so that you can be a hefty ransom fee to the cyber criminals that are behind it. This particular version uses the .hhjk file extension and _readme.txt ransom note.
Read this article if you want to understand more about how this virus specifically works and how you can remove it and try to decrypt your files, thus making them openable again.
Hhjk Virus Summary
|Name||Hhjk virus, also known as UDS:Trojan.Win32.Chapak.gen, Ransom:Win32/StopCrypt.KM!MTB, Win32:PWSX-gen [Trj], Win32:PWSX-gen [Trj], A Variant Of Win32/GenKryptik.FHJB – more detections of this virus on VirusTotal|
|Short Description||The ransomware encrypts files on your computer system and demands a ransom to be paid to allegedly recover them.|
|Symptoms||The Hhjk Virus ransomware will encrypt your files by appending the .Hhjk extension to them.|
|Ransom Demanding Note||_readme.txt|
|Distribution Method||Spam Emails, Email Attachments|
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Hhjk Virus – How Did I Get Infected?
Two main methods exist in which these versions of the family may end up on your computer without you realizing it, listed below:
- If it has been downloaded from some shady third-party software download site.
- If you have received it in the form of an e-mail attachment or a URL in your e-mail inbox.
If the Hhjk virus is being download it from some type of shady website, then this website will most likely be a little reputation software download the app. In it, the following types of files may be used by the ransomware as a disguise:
- Patches for programs or games.
- SFX (self extracting) or regular archive files.
- Cracked applications or portable apps.
- Crack-fixes or activators for software or games.
- Keygens or key generators.
Hhjk virus is the kind of software that may also be sent to you in the form of an email attached file. If this is the case, then the file may appear like one of the following kinds:
- Invoice files.
- Receipt documents.
- Work-related documents.
- E-Tickets of some kind (flights, train, events).
Many of those files are documents, that went downloaded and opened may trigger malicious macro infection, which looks like the following process:
Hhjk Virus – What Does It Do?
Once Hhjk virus infect your machine, it may connect to a remote host, from where it could download it’s malicious payload module files. These files are responsible for the activity of the virus on your computer and may be located in the following directories:
Among the virus files of this ransom ware is also the _readme.txt ransom note, having the following text:
What Are .hhjk Files
The .hhjk files are encoded using AES Encryption. This is sophisticated encryption algorithm, that makes the files no longer able to be opened by altering the key structure data. What this virus does is it performs a scan of your files, based on their important file extensions, for example:
- Files that are archives (.zip, .rar, etc).
- Various sorts of documents (.docx, .pptx, etc.).
- Audio file formats (.mp3, .wav, etc.).
- Different picture file types (.jpg, .png, .etc).
- Video file formats (.mp4, .avi, etc.).
- Other files.
When Hhjk virus is done with encrypting your files, it may leave them looking like the following:
How to Remove Hhjk Virus?
Hhjk virus is the type of malicious software that gets inside your computer system and leaves a lot of different files and objects. To remove them, our main suggestion is to follow the instructions beneath this article. They have been made with the main purpose to help you get rid of this threat either by yourself or automatically. For the most effective removal process, our main suggestion is to remove this virus automatically, using a professional anti-malware software. Scanning your computer with such a program automatically guarantees that it will thoroughly check your advice and get rid of any malicious programs, and other objects that may currently be residing in it.
How to Decrypt .hhjk Files?
Video guide for using the STOP Ransomware Decryptor:
What is Hhjk Ransomware?
Hhjk is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.
Many ransomware viruses use sophisticated encryption algorithms to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.
Can Hhjk Ransomware Cayse Damage?
Yes, ransomware can damage your computer. Ransomware is a malicious software that is designed to block access to your computer or files until a ransom is paid.
Ransomware can also damage your system, corrupt data and delete files, resulting in the permanent loss of important files.
Should I Ignore Viruses, Like Hhjk?
No, you should never ignore ransomware. It can encrypt your data and block access to your computer, making it impossible to access your files until you pay a ransom.
Ignoring ransomware could lead to the permanent loss of your data, as well as the potential for the ransomware to spread to other computers on your network. Additionally, paying the ransom does not guarantee that your data will be recovered.
How Does Hhjk Infect?
Via several ways.Hhjk Ransomware infects computers by being sent via phishing emails, containing virus attachment.
This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.
After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.
Another way you may become a victim of Hhjk is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.
How to Open .Hhjk files?
You can't. At this point, the .Hhjk files are encrypted. You can only open them once they are decrypted using a specific decryptionkey for the particular algorithm.
What to Do If a Decryptor Does Not Work?
Do not panic, and backup the files. If a decryptor did not decrypt your .Hhjk files successfully, then do not despair, because this virus is still new.
Can I Restore ".Hhjk" Files?
Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Hhjk files.
These methods are in no way 100% guaranteed that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How To Get Rid of Hhjk Virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti-malware program.
It will scan for and locate Hhjk ransomware and then remove it without causing any additional harm to your important .Hhjk files.
Also, keep in mind that viruses like Hhjk ransomware also install Trojans and keyloggers that can steal your passwords and accounts.
What to Do If I Cant Get The Files Back?
There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:
- Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
- Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
- Also, check if some of the files that were encrypted can be re-downloaded from the web.
- Another clever way is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
- You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.
More tips you can find on our forums, where you can also asks any questions about your ransomware problem.
How to Report Ransomware to Authorities?
In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer.
Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:
Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:
Germany - Offizielles Portal der deutschen Polizei
United States - IC3 Internet Crime Complaint Centre
United Kingdom - Action Fraud Police
France - Ministère de l'Intérieur
Italy - Polizia Di Stato
Spain - Policía Nacional
Netherlands - Politie
Poland - Policja
Portugal - Polícia Judiciária
Greece - Cyber Crime Unit (Hellenic Police)
India - Mumbai Police - CyberCrime Investigation Cell
Australia - Australian High Tech Crime Center
Reports may be responded to in different timeframes, depending on your local authorities.
Can You Stop Ransomware from Encrypting Your Files?
Yes, you can prevent ransomware. The best way to do this is to ensure your computer system is updated with the latest security patches, use a reputable anti-malware program and firewall, backup your important files frequently, and avoid clicking on malicious links or downloading unknown files.
Can Hhjk Ransomware Steal Your Data?
Yes, in most cases ransomware will steal your information. It is a form of malware that steals data from a user's computer, encrypts it, and then demands a ransom in order to decrypt it.
Can Ransomware Infect WiFi?
Yes, ransomware can infect WiFi networks, as malicious actors can use it to gain control of the network, steal confidential data, and lock out users. If a ransomware attack is successful, it could lead to a loss of service and/or data, and in some cases, financial losses.
Should I Pay Ransomware?
No, you should not pay ransomware extortionists. Paying them only encourages criminals and does not guarantee that the files or data will be restored. The better approach is to have a secure backup of important data and be vigilant about security in the first place.
What Happens If I Don't Pay Ransom?
If you don't pay the ransom, the hackers may still have access to your computer, data, or files and may continue to threaten to expose or delete them, or even use them to commit cybercrimes. In some cases, they may even continue to demand additional ransom payments.
Why Is the Ransom Paid in Crypto?
Cryptocurrency is a secure and untraceable form of payment, making it the ideal choice for ransom payments. It is difficult to trace, and the transactions are almost instantaneous. This means it is nearly impossible for authorities to track the payment and recover the money.
Can Ransomware Attack Be Detected?
Yes, ransomware can be detected. Anti-malware software and other advanced security tools can detect ransomware and alert the user when it is present on a machine.
It is important to stay up-to-date on the latest security measures and to keep security software updated to ensure ransomware can be detected and prevented.
Do Ransomware Criminals Get Caught?
Yes, ransomware criminals do get caught. Law enforcement agencies, such as the FBI, Interpol and others have been successful in tracking down and prosecuting ransomware criminals in the US and other countries. As ransomware threats continue to increase, so does the enforcement activity.
About the Hhjk Research
The content we publish on SensorsTechForum.com, this Hhjk how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.
How did we conduct the research on this ransomware?
Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.
To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.
As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.
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- Always check "About Us" web page.
- Profile of the content creator.
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