LockCrypt Ransomware

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

LockCrypt ransomware removal instructions

What is LockCrypt?

LockCrypt is a ransomware-type virus discovered by malware security researcher, xXToffeeXx. Once infiltrated, LockCrypt encrypts various files and renames them using the "[random_characters]=ID=[random_characters].lock" pattern. For instance, "sample.jpg" might be renamed to a filename such as "CjBKBVcdVRk+AkkLPEQhNGpJPgkeO35TKBt0IUNSSQIzLnxgP04xRFEnewBTPCAEJ0BqA19DPjI= ID BM83S37H145HNUbT.lock". LockCrypt then opens a pop-up window and creates a text file ("ReadMe.txt"), placing it on the desktop. Updated variants of this ransomware use .mich, .1btc or .1BTC extensions for encrypted files.

LockCrypt's pop-up contains information regarding the file encryption (for example, victim ID, number of files, etc.) The text file contains a message stating that files are encrypted and that the victim must pay a ransom to restore them by contacting LockCrypt's developers (email addresses are provided). It is currently unknown whether LockCrypt uses symmetric or asymmetric cryptography. In any case, decryption without a unique key is impossible. This key is stored on a remote server controlled by LockCrypt's developers. Victims are encouraged to pay a ransom to receive the key. The cost is not specified and supposedly depends on how swiftly victims contact cyber criminals. It is also stated that the victim can send LockCrypt's developers three selected files (up to 10 MB), which then be decrypted and returned (this, supposed to guarantee that decryption is possible). Be aware, however, that cyber criminals cannot be trusted. Research shows that victims are often ignored after submitting payments. Paying will not deliver any positive result - you will probably be scammed, lose your money, and support cyber criminals' malicious businesses. Therefore, never attempt to contact these people or pay any ransom. Unfortunately, there are no tools capable of decrypting files compromised by LockCrypt ransomware and the only solution is to restore your files/system from a backup.

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

LockCrypt decrypt instructions

LockCrypt shares many similarities with GoldenEye, MIRCOP, Samsam, GlobeImposter, and dozens of other ransomware-type viruses. As with LockCrypt, these malware viruses are designed to encrypt stored data and make ransom demands. The only major differences between ransomware-type viruses are cost of decryption and type of encryption algorithm used. Furthermore, most use encryption algorithms that generate unique decryption keys (for example, RSA, AES, etc.) Therefore, decrypting files manually is mostly impossible.

How did ransomware infect my computer?

To proliferate ransomware-type viruses, criminals often employ fake software update tools, trojans, unofficial software download sources (freeware download websites, free file hosting websites, peer-to-peer networks, etc.), and spam emails. Fake software updaters exploit outdated program bugs/flaws to infect the system. Third party software distribution sources often proliferate malicious executables by presenting them as legitimate programs. Malicious attachments are often JavaScript files or MS Office documents that, once opened, download malware.

How to protect yourself from ransomware infections?

To prevent ransomware-type infections be very cautious when browsing the Internet. Firstly, never open files received from suspicious emails or download software from unofficial sources. Secondly, keep your installed applications up-to-date and use a legitimate anti-virus/anti-spyware program. Bear in mind, however, that criminals proliferate malware by employing fake software updaters. Therefore, using third party tools to update installed apps is very risky.

Message presented within LockCrypt text file ("ReadMe.txt"):

All your files have beenencrypted!
All your files have been encrypted due to a security problemwith your PC. If you want to restore them, write us to the e-mail support stn_satan@aol.com or Satan-Stn@bitmessage.ch
Write this ID in the title of your message
In case of no answer in 24 hours write us to theese e-mails: support stn_satan@aol.com or Satan-Stn@bitmessage.ch
You have to pay for decryption in Bitcoins. The price dependson how fast you write to us. After payment we will send you thedecryption tool that will decrypt all your files.
Free decryption as guarantee
Before paying you can send us up to 3 files for freedecryption. The total size of files must be less than 10Mb (nonarchived), and files should not contain valuable information.
(databases,backups, large excel sheets, etc.)
How to obtain Bitcoins
The easiest way to buy bitcoins is LocalBitcoins site. Youhave to register, click 'Buy bitcoins', and select the seller bypayment method and price.
Also you can find other places to buy Bitcoins and beginnersguide here:
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 maycause increased price (they add their fee to our) or you can becomea victim of a scam.

Your ID BM83S37H145HNUbT

Screenshot of LockCrypt pop-up window (indicating number of files encrypted on the computer):

LockCrypt wallpaper

Screenshot of files encrypted by LockCrypt (".lock" extension):

Files encrypted by LockCrypt

Update 25 July, 2018 - Security researchers from BitDefender released a free decrypter for this ransomware. You can download it HERE:

lockcrypt ransomware free decrypter by bitdefender

LockCrypt ransomware removal:

Instant automatic removal of LockCrypt 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 LockCrypt 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 LockCrypt 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 LockCrypt 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 LockCrypt 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 LockCrypt 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 LockCrypt, 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 LockCrypt ransomware.

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 LockCrypt ransomware: