How to remove Horros virus and restore encrypted files

If you have suffered from an encrypting virus and you're certain that it’s the Horros ransomware – here you will find useful info. We suggest simple and tested advice about Horros uninstalling and potential ways to get back the corrupted data.

What is Horros

Encryption virus can be considered a worricow of mankind, and everyone knows that if a pop-up says: “files are encrypted” – the things are turning bad. It’s a correct reaction, by the way. An encrypting virus is the most dangerous thing that can happen to you in the Net as a common person has no power to remove it. The only case when you're able to beat ransomware is if you aren't dealing with a true one, but an imitation, that blocks your display and tries to lure your funds. In any other event, if a virus was created and maintained in a right method – you can just trust that virus researchers will defeat it. If web-criminals failed somehow, and there are some flaws, that allow you to recover information – you'll find a cure in the following article.



Let's find out, what we'd find if we look inside a ransomware? It is driven by a completely legitimate coding system which ciphers all data on operator’s PC, so you can't utilize them in any approach. That key is encrypted too, but with another algorithm. In most cases, these manners are AES and RSA, which have proven themselves the very complex and reliable. The mentioned manners and the tools built upon them are in public access in the Web, so hackers only have to invent mechanisms of protection, to restrict an admittance to a virus, and make the flawless update and control system. Some viruses can work off-line, and fraudsters know about another "client" as late as he writes them and sets off the ransom. Other encrypting viruses are function in different way, and deliver data to hundreds servers, to confuse the researchers and maximize the time required to defeat a ransomware.


Virus kind doesn't really matter, as the AES and RSA methods are overly complex to decipher them directly. It will take centuries to perform all necessary calculations on a usual machine and, possibly, 2-3 decades if you have an access to a super-powerful computer. There are two effective methods to defeat an encrypting virus: to find flaws in its code, or hack the Command & Control website, to receive encryption keys. Rare ransomware examples also have a switch that can cease virus' operation completely or to make it pass a particular machine. If someone discovers that switch for Horros, or develop a decryptor, we will give you complete information in this article.


There are some things to check, before giving in and looking for a decryption program. As we said earlier, Internet-criminals make mistakes, and certain peculiarities of your system might assist you to restore information.


  • If you've made a backup, and placed it on an external media – you might delete a virus and use it. Ensure that the virus is removed totally, since if it isn't – all data will be corrupted instantly, including those that are on a flash disc.
  • If you do not use the system from an admin entry – today’s your fortunate day. The catch is that the Windows replicates any data prior to they’re eliminated or encrypted. Those backups are known as the Shadow Volume Copies, and the malware has the methods to remove them. If you are using the regular account – the operating system asks for a authorization at the exact moment Horros tries to delete SVC. In case you saw such window and ignored it – your SVC are secure, and you can download a topical tool to recover the files.


In case you revised all these things and there is no chance to recover the files – you need to delete Horros from your system and wait until a decryption tool will be published.

How to remove Horros

As about the uninstalling – there’s no chance to entirely avoid an automatic mode. This virus is too sly and there is a chance pass some elements and then regret it (it might happen if you connect an external data storage with your backups to a not-totally-clean machine). It knows how to conceal damn well, and you literally can't uninstall it totally by hand. According to this, we’ve made an effective elimination directions which will suit all your needs. It consists of some by-hand steps and an optional antivirus program phase.

Removal instruction

If you are MAC user, follow this guide: how to decrypt files on MAC.




Step 1. Boot the system into safe mode

  • Press Start
  • Type Msconfig and press Enter

Safe mode. Step 1


  • Select Boot tab

Safe mode. Step 2



  • Select Safe boot and press Ok

More information about Safe mode: What is Safe Mode and how to boot computer in Safe Mode


Step 2. Show all hidden files and folders

  • Press Start
  • Click on Control Panel

Show hidden files. Step 1


  • Select Appearance and Personalization

Show hidden files. Step 2


  • Click on Folder Options
  • Select View tab
  • Select Show hidden files, folders and drives

Show hidden files. Step 3


  • Press Ok


Step 3. Remove virus files


Check next folders to find suspicious files:

  • %TEMP%
  • %ProgramData%


Step 4. Fix hosts file

  • Go to %SystemRoot%\System32\drivers\etc\ folder



  • Open hosts file using Notepad or other text editor
  • Delete suspicious elements
  • Basic hosts file looks like this:



Step 5. Clean registry (for experienced users)

  • Click Start
  • Type Regedit.exe and press Enter
  • Clean startup registry keys
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\RunServices
  • HKEY_LOCAL_MACHINE(HKEY_CURRENT_USER)\Software\Microsoft\Windows\CurrentVersion\RunServicesOnce
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit

Step 6. Scan computer with antivirus

We offer you to test Spyhunter anti-viral program which is not just efficient, but also modern and continuously developing antivirus that is able to clean your device of all viruses. Click the link under this paragraph to buy Spyhunter and eliminate Horros.


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Step 7. Disable Safe Mode and restart computer

  • Press Start
  • Type Msconfig and press Enter
  • Select Boot tab
  • Remove the check near Safe boot

How to restore files

Since you uninstalled the ransomware, or at though know how to do it, let’s talk about the info recovery. As we said before, if you logged in from an administrator profile and you gave Horros a pass into the PC – there is no method to recover your data except for the backups. If you use a regular profile – you have faint chances for file restoration, but it will require especial recovery tool. We recommend you to use ShadowExplorer and Recuva programs. They're simple to get on the official pages of their developers, with thorough instructions.

  • Click Start
  • Click Control Panel

Decrypt files. Step 1


  • Click System and Security

Decrypt files. Step 2


  • Select Backup and Restore

Decrypt files. Step 3


  • Select Restore files from backup
  • Select checkpoint to restore


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