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.htrs Ransom Virus (Restore Files)

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This article aims to help you remove the .htrs ransomware infection completely from your computer and restore your files in case they have been encrypted by it.

A ransomware virus using the AES encryption algorithm has been reported to cause infections to unsuspecting victims on various locations all over the world. The ransomware, also known as HTRS encrypts the files via the above-mentioned algorithm after which demands the victims to pay the sum of 0.5 BTC to get access back to their data. In case you have become a victim of this ransomware virus, recommendations are to read this article thoroughly.

Threat Summary


HTRS Virus

Short DescriptionEncrypts files on the computers infected by it and demands 0.5 BTC for decryption of encrypted files.

SymptomsThe victim may not be able to open the files. The .htrs extension is added.
Distribution MethodVia an Exploit kit, Dll file attack, malicious JavaScript or a drive-by download of the malware itself in an obfuscated manner.
Detection Tool See If Your System Has Been Affected by HTRS Virus


Malware Removal Tool

User ExperienceJoin our forum to Discuss HTRS Virus.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

.htrs Ransomware – How Does it Spread

The distribution of .htrs ransomware infection is conducted via multiple different methods including the sending out of massive spam e-mails. Such massive spam campaigns are typical for ransomware viruses like HTRS and they often carry one of the latter:

  • Malicious e-mail attachments.
  • Malicious web links leading to the infection.

Usually the e-mails are accompanied by a convincing message, similar to the one below:

Other methods of replication of this virus may include the usage of various different fake setups, key generators, license activators or other fraudulent files uploaded on torrent or other websites.

.htrs Ransomware – Activity

Once situated on your computer, the .htrs file ransomware may create multiple different types of files that may exist under various names in different Windows folders:

Then, .htrs ransomware may modify the registry sub-keys of the Windows registry editor to make it’s executable run automatically on system boot:


After this HTRS ransomware may also delete the shadow volume copies of the infected computer by executing the following commands in the Windows command prompt:

→ process call create “cmd.exe /c
vssadmin.exe delete shadows /all /quiet
bcdedit.exe /set {default} recoveryenabled no
bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures

After the shadow volume copies have been deleted from the computer the HTRS ransomware may begin the encryption process.

HTRS File Virus – Encryption Process

The encryption of the HTRS ransomware includes the usage of the AES encryption algorithm, also known as Advanced Encryption Standard. This encryption replaces blocks of data of the files with data from the algorithm. The files that are targeted for encryption include audio files, documents, video files and others. Among the file types targeted by the HTRS ransomware may be the following:


After the virus encrypts the files, they become no longer openable and the .htrs file extension is added to them.

Remove HTRS Ransomware and Restore .htrs Encrypted Files

For the removal of HTRS ransomware, it is strongly advisable to focus on following the instructions below. They are specifically designed to help you remove this ransomware infection completely. In case manual removal represents a difficulty for you, we recommend taking the automatic approach. Malware researchers always advise to use an advanced anti-malware program for maximum effectiveness during the removal process.

After having removed the files associated with HTRS Ransomware, we strongly advise you to focus on restoring the encrypted files using the alternative instructions in step “2. Restore files encrypted by HTRS Virus” below.


Ventsislav Krastev

Ventsislav has been covering the latest malware, software and newest tech developments at SensorsTechForum for 3 years now. He started out as a network administrator. Having graduated Marketing as well, Ventsislav also has passion for discovery of new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management and then Network Administration, he found his passion within cybersecrurity and is a strong believer in basic education of every user towards online safety.

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