Remove .Lost_Files_Encrypt Ransomware

By Chona Esjay | Posted on October 4, 2019 | Updated on January 27, 2020

If majority of files on the computer has transformed into .Lost_Files_Encrypt extension, this only means that system is infected with a virus or presently dubbed as the “Lost Files” Ransomware. Typically, this usual ransomware takes advantages of spam emails to spread the virus. However, on this particular attack, the malicious email disguises as notification email from Microsoft with “Virus Detected On Your Computer” as subject. It states that recipient’s computer is contaminated with viruses. As quoted from the fake Microsoft email:

Hi,
This email has been sent to you because your windows computer has contracted a Trojan horse virus. The Trojan horse virus has been known for collecting information about you (This includes credit card numbers and bank account logins).

So, we strongly advise to block your credit cards and your bank account logins, that you have used on your computer.

Microsoft has developed a scanner that can help you terminate the Trojan horse virus. The scanner has been developed under safeplaces L.L.C. which is a Microsoft subsidiary. It is important that you download and install it quickly, because the Trojan horse virus will ruin your computer.

Here you can download the security scanner…

If recipient decided to download the archive file WSS.zip and allow the Windows Security Scanner.exe to run on the computer, the virus will display installation progress bar, acting as if it is loading the tool. Hence, this commences the attack where the virus looks for target files and start encrypting them. While locking the files, the virus also appends the extension to .Lost_Files_Encrypt. Subsequently, it will display the alert stating the following:

Attention!!! Your data has been encrypted!!!

Attention! First of all we are terribly sorry to have encrypted your data. Because we are human too and we feel some guilt encrypting your data. We offer that we can help you decrypt it again for a small amount of Bitcoins(BTC).

The amount that we need from you is 500 USD that you will transfer to our BTC account. To Get your unique tool to decrypt your files, your need to push the button below and your BTC payment address will show, transfer 500 USD in BTC to that address.

After you have transferred the BTC you are going to send an email to our email address (Our email will also get displayed when pushed the button). Where you provide your BTC address of the wallet that you used to send our BTC (If you have other comments, you are welcome to say it)[Also remember to check your spam inbox for when we send your decryption tool]. We will check it, if you have sent the BTC, you will get your decryption tool. Everything from family memories to the hard work of yours will be washed down the toilet and it will never return. So it’s strongly advised that you start paying us for helping you to decrypt it…

How to Remove Lost_Files_Encrypt Ransomware

Ransomware files are placed deeply into the system and on various locations, thus, thorough scanning is vital to totally remove Lost_Files_Encrypt virus. Aside from our suggested tool, you may also run your own security program.

Though affected files may be impossible to decrypt due to complexity of the encryption, you can still try recovery method like alternative tool, Shadow Explorer or Previous Version as described below.

Stage 1: Scan the Computer with Anti-Malware Tool

1. Download free anti-malware scanner called MalwareBytes Anti-Malware.
Malwarebytes Anti-Malware Download Link (this will open a new window)

2. After downloading, install the program. It may run automatically or you have to double-click on the downloaded file MB3-Setup-[version].exe.

3. Carry out the installation with default setup process.

4. At the last stage of installation process, click the Finish button. The program should launch momentarily.

5. On Malwarebytes Anti-Malware console, select Scan from the menu to see available Scan Method.

6. Next, click on Threat Scan. This is the most complete scan method that will surely find any hidden malicious objects associated to Lost_Files_Encrypt ransomware.

7. Finally, click on Start Scan begin checking the computer for malware and similar threats.

MBAM-threatscan

8. Once the scan has completed, the tool will display the list of detected threats. Remove all identified malicious items and restart the computer if necessary.

Stage 2: Double-check for Lost_Files_Encrypt’s leftover with Microsoft’s Malicious Software Removal Tool

1. Download the free scanner called Malicious Software Removal Tool.
Malicious Software Removal Tool Download Link (this will open a new window)

download-msrt

2. The tool automatically checks the operating system and suggest appropriate download version. Click on Download button to begin. Save the file to a convenient location, preferably on Desktop.

3. After downloading the file, Windows will prompt that download has completed. Click Run to start scanning for Lost_Files_Encrypt ransomware. Another option is to browse the location folder and double click on the file to run.

msrt-icon

4. The tool will display Welcome screen, click Next. Please note the message “This tool is not a replacement for an antivirus product.” You must understand that this program is made specifically to find and remove malware, viruses, Trojans, and other harmful elements on the computer. It was not designed to protect the computer.

msrt1

5. Next, you will see Scan Type. Please choose Full Scan to ensure that all Lost_Files_Encrypt ransom virus entities and other harmful files left on the computer will be found and removed. For advanced computer user, you can opt for Customized Scan, if there are other drives or folders you wanted to include in this scan.

msrt2

6. Full scan may take a while, please wait for Malicious Software Removal Tool to complete the tasks. However, you may cancel the scan anytime by clicking on the Cancel button.

msrt3

7. After scanning, the tool will reveal all identified threats. There may be other threats that our first scan fails to detect. Please remove/delete all detected items.

8. When removal procedure is complete, you may now close Malicious Software Removal Tool. We hope that Lost_Files_Encrypt ransomware have been completely deleted from the computer. Please restart Windows to proceed with the normal operation.

Stage 3 : Unlocking files with Lost_Files_Encrypt Decryption Tool

Tools that may decrypt files infected by Lost_File is not yet available at this time. We will update this section once the tool is on hand. In the meantime, please try the options below.

Option 1: Windows Previous Version Tool

Windows Vista and Windows 7 have a feature called Previous Versions. However, this tool is only usable if restore point was made prior to Lost_Files_Encrypt ransomware infection. To use this tool and recover files affected by the virus, please follow these steps:

1. Open My Computer or Windows Explorer.

2. Right-click on the affected files or folders. From the drop-down list, please click on Restore previous versions.

3. New window will open display all backup copy of files and folders you wanted to recover. Choose the appropriate file and click on Open, Copy, or Restore. Restoring selected files overwrites the current encrypted files on the computer.

Option 2: Use ShadowExplorer to restore files encrypted by Lost_Files_Encrypt Ransomware

Just like Previous Version tool, ShadowExplorer is taking advantage of shadow copy created by Windows. This tool allows you to retrieve older version of files before it was encrypted by Lost_Files_Encrypt ransomware.

1. Download ShadowExplorer from the official web site.

2. Install the program with the default settings.

3. The program should run automatically after installation. If not, double-click on ShadowExplorer icon.

4. You can see the drop-down list on top of the console. Please select proper drive and the most recent point-in-time shadow copies of files you wish to restore prior to Lost_Files_Encrypt ransomware infection.

shadow3

5. Right-click on the Drive, Folder, or File you wish to restore and click Export…

6. Lastly, ShadowExplorer will prompt for location where you want to save the copy of recovered files.

Leave a Reply

Your email address will not be published. Required fields are marked *