Langolier Ransomware

Also Known As: Langolier virus
Distribution: Low
Damage level: Severe

Langolier ransomware removal instructions

What is Langolier?

Langolier was discovered by Emmanuel_ADC-Soft. This malicious program belongs to the Scarab ransomware family. Like most programs of this type, it is used by cyber criminals to encrypt data stored on the victim's computer and to keep it unusable until a ransom is paid. Langolier renames encrypted files and creates a ransom message in the "HOW TO RECOVER ENCRYPTED FILES.TXT" text file. The program renames encrypted files by adding the ".langolier" extension. For example, "1.jpg" becomes "1.jpg.langolier".

Langolier's developers use the ransom message to inform victims that all of their files have been encrypted. To recover them, victims must purchase a decryption tool by contacting developers with the or email address. Developers offer a 'free trial', which is free decryption up to three files, however, these should "non archived". They urge victims not to rename encrypted files or use other tools to decrypt them. These actions apparently might cause permanent data loss or at least increase the cost of decryption. The initial cost of the decryption tool is unknown, however, it is likely that they will provide these details when they are contacted. Do not trust these cyber criminals - they will not keep their promises. People who send payments (cryptocurrency) often become victims of a scam and receive nothing in return. Most ransomware-type programs encrypt files using cryptography algorithms (symmetric or asymmetric) that make decryption, without using specific tools, impossible. Generally, only the criminals who developed this ransomware-type program can provide a decryption tool to unlock encrypted files. In these cases, the only free way to recover files is to use a backup and to restore everything from there.

Screenshot of a message encouraging users to pay a ransom to decrypt their compromised data:

Langolier decrypt instructions

Langolier is very similar to many other programs of this type, such as Spyhunter, Raldug, and Carcn. These malicious programs encrypt files and block/prevent victims from accessing them until the ransom is paid (decryption key or tool is purchased). Main differences between these programs are cryptography algorithms used to encrypt data and cost of decryption. Unfortunately, it is generally impossible to bypass encryption, unless the ransomware contains bugs/flaws or is in development. To avoid data and financial loss, we recommend that you maintain regular backups and store them on a remote server (such as Cloud) or unplugged storage device.

How did ransomware infect my computer?

In most cases, cyber criminals proliferate computer infections through spam campaigns, fake/unofficial software updaters, Trojans, untrustworthy software download sources and software 'cracking' tools. Spam email campaigns can be used to proliferate infections via attached malicious files. Typically, these attachments are Microsoft Office documents, JavaScript files, archives (ZIP, RAR), PDF documents, executables (.exe files), and so on. If opened, they download and install computer infections. Fake (unofficial) software updaters infect computers by downloading and installing malicious programs rather than the updates/fixes, or by exploiting bugs, flaws of outdated software that is installed on the computer. Trojans are malicious programs that, if already installed, cause chain infections. These programs are designed proliferate other malicious programs. Free file hosting, freeware download websites, Peer-to-Peer networks (such as torrent clients, eMule, and so on) and other dubious software download sources, can be used by cyber criminals. They present infected files as legitimate and harmless. They use these sources to trick people into downloading and installing computer infections. Programs that supposedly allow their users to bypass paid software activation free of charge can also be used to proliferate viruses. Rather than activating some software they download and install malicious programs.

Threat Summary:
Name Langolier virus
Threat Type Ransomware, Crypto Virus, Files locker.
Encrypted Files Extension .langolier
Ransom Demanding Message HOW TO RECOVER ENCRYPTED FILES.TXT text file.
Cyber Criminal Contact,
Detection Names (svchost.exe - note that svchost.exe is a completely legitimate MS Windows file, yet Langolier ransomware uses it as a disguise) Avast (Win32:Trojan-gen), BitDefender (DeepScan:Generic.Ransom.AmnesiaE.84D73504), ESET-NOD32 (a variant of Win32/Filecoder.FS), Kaspersky (HEUR:Trojan-Ransom.Win32.Generic), Full List Of Detections (VirusTotal)
Symptoms Cannot open files stored on your computer, previously functional files now have a different extension (for example, my.docx.locked). A ransom demand message is displayed on your desktop. Cyber criminals demand a ransom payment (usually in bitcoins) to unlock your files.
Distribution methods Infected email attachments (macros), torrent websites, malicious ads.
Damage All files are encrypted and cannot be opened without paying a ransom. Additional password-stealing trojans and malware infections can be installed together with a ransomware infection.

To eliminate Langolier virus our malware researchers recommend scanning your computer with Spyhunter.
▼ Download Spyhunter
Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

How to protect yourself from ransomware infections?

If a received email is irrelevant or contains attachments/web links, do not open any of its contents. Download all software using direct links and official (trustworthy) websites. Do not use any of the channels mentioned above. Update installed software using tools and implemented functions that are provided by official software developers, and not unofficial, third party programs. Do not use software 'cracking' programs, since this is a cyber crime. Furthermore, these programs often install computer infections. We also recommend that you have reputable anti-virus or anti-spyware software installed and enabled at all times. These tools detect and eliminate threats before they can do any damage. If your computer is already infected with Langolier, we recommend running a scan with Spyhunter for Windows to automatically eliminate this ransomware.

Text presented in Langolier ransomware text file "HOW TO RECOVER ENCRYPTED FILES.TXT":


all your files have been encrypted.

Your personal ID:


If you want to recovery your files, you need the decryptor.
You should send us e-mail with your personal ID and 3 (three) files (non archived) to
receive the decryptor.

>>> Contacts:
If your mail server doesn't send e-mail to our contacts, we recommended you to create
an e-mail on ( or (

>>> Free decryption as guarantee!
Before paying you send us up to 3 files for free decryption.
The total size of files must be less than 10Mb (non archived!!!), and files should not contain
valuable information (databases, backups, large excel sheets, etc.). We recommeded to send pictures,
text files, sheets, etc.

 * Do not rename encrypted files.
 * Do not try to decrypt your data using third party software, it may cause permanent data loss.  
 * Decryption of your files with the help of third parties may cause increased price  
   (they add their fee to our) or you can become a victim of a scam.

Screenshot of files encrypted by Langolier (".langolier" extension):

Files encrypted by Langolier

Langolier ransomware removal:

Instant automatic removal of Langolier virus: Manual threat removal might be a lengthy and complicated process that requires advanced computer skills. Spyhunter is a professional automatic malware removal tool that is recommended to get rid of Langolier virus. Download it by clicking the button below:
▼ DOWNLOAD Spyhunter By downloading any software listed on this website you agree to our Privacy Policy and Terms of Use. Free scanner checks if your computer is infected. To remove malware, you have to purchase the full version of Spyhunter.

Quick menu:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup. Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings". Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Windows 8 Safe Mode with networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options". In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

windows 10 safe mode with networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

Step 2

Log in to the account infected with the Langolier virus. Start your Internet browser and download a legitimate anti-spyware program. Update the anti-spyware software and start a full system scan. Remove all entries detected.

If you cannot start your computer in Safe Mode with Networking, try performing a System Restore.

Video showing how to remove ransomware virus using "Safe Mode with Command Prompt" and "System Restore":

1. During your computer start process, press the F8 key on your keyboard multiple times until the Windows Advanced Options menu appears, and then select Safe Mode with Command Prompt from the list and press ENTER.

Boot your computer in Safe Mode with Command Prompt

2. When Command Prompt mode loads, enter the following line: cd restore and press ENTER.

system restore using command prompt type cd restore

3. Next, type this line: rstrui.exe and press ENTER.

system restore using command prompt rstrui.exe

4. In the opened window, click "Next".

restore system files and settings

5. Select one of the available Restore Points and click "Next" (this will restore your computer system to an earlier time and date, prior to the Langolier ransomware virus infiltrating your PC).

select a restore point

6. In the opened window, click "Yes".

run system restore

7. After restoring your computer to a previous date, download and scan your PC with recommended malware removal software to eliminate any remaining Langolier ransomware files.

To restore individual files encrypted by this ransomware, try using Windows Previous Versions feature. This method is only effective if the System Restore function was enabled on an infected operating system. Note that some variants of Langolier are known to remove Shadow Volume Copies of the files, so this method may not work on all computers.

To restore a file, right-click over it, go into Properties, and select the Previous Versions tab. If the relevant file has a Restore Point, select it and click the "Restore" button.

Restoring files encrypted by CryptoDefense

If you cannot start your computer in Safe Mode with Networking (or with Command Prompt), boot your computer using a rescue disk. Some variants of ransomware disable Safe Mode making its removal complicated. For this step, you require access to another computer.

To regain control of the files encrypted by Langolier, you can also try using a program called Shadow Explorer. More information on how to use this program is available here.

shadow explorer screenshot

To protect your computer from file encryption ransomware such as this, use reputable antivirus and anti-spyware programs. As an extra protection method, you can use programs called HitmanPro.Alert and EasySync CryptoMonitor, which artificially implant group policy objects into the registry to block rogue programs such as Langolier ransomware.

Note that Windows 10 Fall Creators Update includes a "Controlled Folder Access" feature that blocks ransomware attempts to encrypt your files. By default, this feature automatically protects files stored in the Documents, Pictures, Videos, Music, Favorites as well as Desktop folders.

Controll Folder Access

Windows 10 users should install this update to protect their data from ransomware attacks. Here is more information on how to get this update and add an additional protection layer from ransomware infections.

HitmanPro.Alert CryptoGuard - detects encryption of files and neutralises any attempts without need for user-intervention:

hitmanproalert ransomware prevention application

Malwarebytes Anti-Ransomware Beta uses advanced proactive technology that monitors ransomware activity and terminates it immediately - before reaching users' files:

malwarebytes anti-ransomware

  • The best way to avoid damage from ransomware infections is to maintain regular up-to-date backups. More information on online backup solutions and data recovery software Here.

Other tools known to remove Langolier ransomware:

About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global virus and spyware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Langolier virus QR code
A QR code (Quick Response Code) is a machine-readable code which stores URLs and other information. This code can be read using a camera on a smartphone or a tablet. Scan this QR code to have an easy access removal guide of Langolier virus on your mobile device.
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