Horros virus is a new Hidden Tear based malware that is actively infecting computers worldwide. Read our in-depth removal guide in order to learm more about it and recover your computer.
|Short Description||The Horros virus is a Hidden Tear based malware that encrypts the target data with .horros extension.|
|Symptoms||The victims will find that their files are encrypted with the .horros extension.|
|Distribution Method||Spam Emails, File Sharing Networks, Exploit Kits|
|Detection Tool|| See If Your System Has Been Affected by Horros |
Malware Removal Tool
|User Experience||Join Our Forum to Discuss Horros.|
Horros virus – Infection Spread
The Horros virus can be distributed using various methods depending on the desired scale of attacks. The hackers can make use of the most popular strategies to infect as many targets as possible. As such one of the most popular methods is to send spam messages that include a social engineering element. The preferrred way is to send hyperlinks that lead to the Horros virus samples hosted on a hacker-controlled download page. In other cases the malware operators may attach the files to the messages. The tactics used by the Horros virus controllers are to use stolen text and graphics from well-known sites.
In the last few years we have observed two methods that utilize malware payloads. The first one is to integrate the Horros virus into documents. They can be of different types such as rich text documents, spreadsheets and presentations. Once they are opened by the victims a notification window will be spawned that asks the victims to enable the built-in scripts. When this is done the virus will be automatically loaded into the system and initiated on the victim system. The other strategy is to load the Horros virus code into software installers. The criminals take the legitimate application setup files from official vendors and modify them to include the dangerous code. The reason why this tactic has the potential to impact many users is the fact that the criminals target popular software such as games, utilities, creativity apps and productivity solutions.
Due to the fact that the virus samples can be loaded through a payload or another software browser hijackers are a popular choice. They represent malware browser plugins that are designed to redirect the victim users to a hacker-controlled page, deploy various malware (including the virus) and institute various system changes.
Other Horros virus delivery methods include web scripts such as ads, banners and pop-ups. They can be placed on legitimate sites as well through affiliate networks and other marketing services.
Horros virus – Technical Data
The Horros virus is a newly discovered threat that appears to be a strain of the HiddenTear malware family. The ongoing attack campaigns are being initiated by an unknown individual or criminal collective. Like other similar threats it uses a prescribed behavior pattern that can be modified according to the ongoing attack campaign. This means that the virus can enable or integrate certain features in one campaign and be customized with others in future ones.
The attacks can begin with an information gathering that is programmed to harvest sensitive data from the compromised systems. It can be programmed into hijacking two main types of data:
- Private Information — This type of data can expose the victim’s identity. The malware engine is programmed into looking our for specific strings: the victims name, address, location, interest, passwords, account credentials and etc.
- Metrics Data — Other data that can be used by the malware engine for statistical purposes. This includes the available hardware components and certain operating system values.
Once this is done the collected information ca be used to start a stealth protection module. It uses the data to scan for signatures of any applications or services that might interfere with the Horros virus execution. Examples include anti-virus solutions, sandbox environments and virtual machine hosts. Advanced versions can be configured into deleting themselves if they are unable to overcome the security measures.
Follow-up steps include various system changes that all seek to misconfigure the system and allow for further malware actions. A popular method is to modify the Windows Registry by creating new entries or modifying existing ones. When such is the case with system applications or user software the victims apps may loose some functionality or altogether stop working. Overall system performance can be impacted if the malware modifies a system-related value.
Some Hidden Tear based viruses have the ability to institute a network connection to the hacker-controlled server. It can be used to serve various other malware as well. Some connections are used in a manner similar to Trojan viruses by transmitting data in real time. They allow the hackers to spy on the victims and take over control of them at any given time.
The Hidden Tear code is modular enough to allow for additional components to be loaded both before the virus is started and during its execution.
Horros virus — Encryption Process
Once all components have completed execution the ransomware module is started. Following the well-known Hidden Tear behavior patterns it uses a built-in list of target file type extensions that are encrypted with a strong cipher. The captured strains have been found to impact the following data types:
.3dm, .7z, .7zip, .accdb, .ai, .asp, .bmp, .class, .cpp, .cs, .csv, .dat, .db, .dbf,
.doc, .docb, .docm, .docx, .dot, .dotm, .dotx, .dwg, .dxf, .eps, .fla, .gif, .ico, .indd,
.jar, .java, .jpeg, .jpg, .js, .max, .mdb, .msg, .pdb, .pdf, .php, .png, .ps, .psd, .py, .rar,
.raw, .rb, .rtf, .sdf, .sql, .svg, .swf, .tif, .txt, .vcf, .wpd, .wps, .xlm, .xls, .xlsb, .xlsm,
.xlsx, .xlt, .xltm, .xltx, .xml, .zip
All victim files are renamed with the .horros extension. The ransomware engine can also create designated ransom notes with messages that attempt to coerce the victims into paying the hackers a ransom fee.
Remove Horros virus and Restore Your Files
If your computer got compromised and is infected with the Horros ransomware virus, you should have some experience with removing viruses before tampering with it. You should get rid of the ransomware fast before it can spread further on the network and encrypt more files. The recommended action for you is to remove the ransomware completely by following the step-by-step instructions written below.
How to Remove Horros from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Horros
Step 2: Uninstall Horros and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it.
Step 3: Clean any registries, created by Horros on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by Horros there. This can happen by following the steps underneath:
Step 4: Scan for Horros with SpyHunter Anti-Malware Tool
Step 5 (Optional): Try to Restore Files Encrypted by Horros.
Ransomware infections and Horros aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
If the above link does not work for you and your region, try the other two links below, that lead to the same product:
Get rid of Horros from Mac OS X.
Step 1: Uninstall Horros and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove Horros via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove Horros files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as Horros, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Step 3 (Optional): Try to Restore Files Encrypted by Horros on your Mac.
Ransomware for Mac Horros aims to encode all your files using an encryption algorithm which may be very difficult to decode, unless you pay money. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files, but only in some cases. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.
What is Horros ransomware and how does it work?
Horros 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 algorithm how 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.
How does Horros ransomware infect my computer?
Horros Ransomware infects computers by being sent via phishing e-mails, 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 Horros 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 .Horros files?
You can't. At this point the .Horros files are encrypted. You can only open them once they are decrypted.
Decryptor did not decrypt my data. What now?
If a decryptor did not decrypt your .Horros files successfully, then do not despair, because this virus is still new.
One way to restore files, encrypted by Horros ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.
How Do I restore ".Horros" files (Other Methods)?
We have suggested several file recovery methods that could work if you want to restore .Horros files. These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.
How do I get rid of Horros ransomware virus?
The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate Horros ransomware and then remove it without causing any additional harm to your important .Horros files.
Also, keep in mind that viruses like Horros ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.
What to Do If nothing works?
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 it can be re downloaded from the web.
Another clever way to get back some of your files 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.