BytesLocker Ransomware – How to Remove and Unlock Your PC

BytesLocker Ransomware – How to Remove and Unlock Your PC

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This article has been created in order to explain in detail what is BytesLocker ransomware virus and how to remove it completely from your PC.

The ransomware virus aims to perform an array of operations on the victim’s computer, the final of which results in the screen of the PC being locked and a message, beginning with “Your Windows has been Locked by BytesLocker” is displayed. In addition to this, the ransomware infection demands BitCoin ransom payoff in order to unlock the victim’s screen. Furthermore, it has also been reported that It may become unlock-able in the near future. In the meantime, if your computer has been infected by BytesLocker ransomware, we recommend that you read the following article and learn how to remove it and unlock your computer.

Threat Summary

TypeRansomware, ScreenLocker
Short DescriptionAims to lock the screen on your computer and hold it hostage until you pay $150 in BitCoin to get sent an unlock code.
SymptomsThe computer is locked with a lockscreen which does not allow you to do anything until you pay ransom.
Distribution MethodSpam Emails, Email Attachments, Executable files
Detection Tool See If Your System Has Been Affected by BytesLocker


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss BytesLocker.
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.

BytesLocker Ransomware – How Does It Infect

In order to infect a given computer, BytesLocker is the type of malware which aims to perform various different types of activities that can lead to an infection with the virus and your screen being locked. To achieve this, the cyber-criminals may use a combination of tools that make the infection file of this malware to be concealed from any cyber-protection, such as antivirus, firewall, etc. Such technologies are often:

  • Malware obfuscators or crypters.
  • Downloaders.
  • Malicious macros.
  • Process injectors.
  • JavaScript URLs.

The main method by why the ones who infect with BytesLocker may use to spread the malware are reported to be via e-mail spam messages, that may use the names of big companies in order to get the victim to download the malicious file, believing it is a legitimate one. Such companies may be eBay, DHL, PayPal and other big names and the malicious attachments often pretend to be legitimate:

  • Invoices.
  • Receipts.
  • Order confirmation documents.
  • Banking statements or reports of suspicious activity on your account.

All of these may convince even experienced users that the downloaded file is legitimate, but if yo believe so, we suggest that you perform a check of the file before opening it, using your antivirus program’s on-demand scanner or using online scanner services, like ZipeZip or VirusTotal.

BytesLocker Ransomware – Malicious Activity

BytesLocker ransomware is the type of virus which is from the screenlocker kind, meaning that the malware locks the screen on your computer, making it virtually Impossible to use it until you pay a hefty ransom fee in BitCoin ($150) to unlock it.

The first activity on the computer of the victim, performed by BytesLocker is to connect the computer via an unsecured port. This may immediately result in the virus downloading it’s malicious payload via the intermediary malware it has caused the infection with. The payload’s primary file has been reported in VirusTotal to have the following parameters:

SHA-256: 44fc67fb3c0d97b3e1496fb4dbdcb573b4ce792413e85075af7082dd30443afe
File name: ByteLocker.exe
Size: 29 KB

After the file has been downloaded on the computer of the user it is immediately executed as a screenlocker Trojan. The virus then may attack the following Windows registry entries in order to lock the screen as an administrator:

→ HKU\Administrator\Software\Microsoft\Windows\CurrentVersion\Policies\System

In those sub-keys, registry entries, containing values may be created that may execute the lockscreen on system startup and modify the screensaver of the victim’s computer, so that it can no longer be turned off. This may immediately result in the virus force-resetting your computer system after which displaying it’s lockscreen message, reported to be the following:

Text from Image:

How can I unlock my windows???
It’s easy pay 150 dollars to bitcoin address below and we will get you decryption code:
BitCoin Address:
Enjoy (:

After doing so, the ransomware virus leaves the victim with no choice but to pay the ransom. However, we strongly advise you not to do so, because paying the ransom may result in your computer not being unlocked, because you cannot trust the cyber-criminals and furthermore, paying will help fund their ransomware operation. Either way, the best course of action is to focus on removing BytesLocker screenlocker completely from your computer.

Remove BytesLocker ScreenLocker Virus Fully

In order to remove this infection from your computer system, it is strongly advisable to follow the removal instructions below and bypass the lockscreen by entering Safe Mode. However, if you cannot remove BytesLocker manually from your computer, we would suggest scanning it by using an advanced anti-malware software and scan the hard drive on your PC from another operating system or computer that has access to it. Such program will automatically detect and remove all malicious files from your computer and make sure it stays protected against future screenlockers, like BytesLocker.

If you want to retrieve your files and directly reinstall Windows, then we would suggest that you remove the hard drive from your computer, following the instructions in this article and then use the following data recovery programs(or others you find useful) in order to scan your hard drive after you connect it to a safe computer.

For the recovery process, we have outlined several often-met drive migration scenarios which can be possible between different computers:

  • From Laptop to Laptop with no extra components.
  • From Desktop to Desktop with no extra components.
  • From Laptop to Desktop with a SATA cable if the Desktop has an outdated chipset.
  • From Desktop to Laptop with a SATA cable if the Laptop has a newer chipset.

To simplify the process, we recommend you to choose machines that do not require any extra cables or components for the drive to run on them. In case you do not have such possibility, we recommend using an external SATA-USB adapter.

Step 1: Remove battery and power from your laptop. For desktop computers, please remove eliminate the power from the contact.

Step 2: Using the screwdriver, unscrew the case which carries the hard drive. For laptops, you should follow these steps:


Step 3: Remove the hard drive again with the screwdriver. It will look similar to the one on the picture below:


Step 4: Plug-in the hard drive on a secure computer which has an internet connection and Windows installed and screw it in firmly. If connected directly, the hard drive should be detected by the OS as a separate partition, similar to the picture below:


Step 5: After you have connected the drive, you will likely not be able to open it, because it’s sectors are encrypted. However, because only some of the sectors are encrypted, enough to render the drive no longer openable, you may have a chance if you use a data recovery software to recover the files from the drive as you were scanning a lost partition. Most data recovery programs have support for scanning broken partitions, but we recommend you to try the following:

Stellar Phoenix Windows Data Recovery

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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