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Ransomware | 07/15/2019

How To Remove Lokas Ransomware From Your System?

About: The nasty Lokas ransomware is file encryption software. The .lokas files can only be restored with the help of unique key. The key is stored on the developer’s server. The victim has to purchase it for hefty ransom.

| Ransomware | How To Remove Lokas Ransomware From Your System?

Understanding Lokas Ransomware

DJVU family is back with another malicious ransomware! Developers named it Lokas ransomware. Alike its cousins the ultimate aim of Lokas is to extort large sum of money. Once, it successfully infiltrates your system, it scans for targeted files. Lokas virus targets the files which are most commonly found in any PC these days. Once the targeted files are found, what’s the next step? Let us read the insights from this article to understand the menace caused by Lokas Ransomware in a better manner.

Lokas ransomware

Lokas ransomware, the file encrypting program is a dangerous variant of DJVU ransomware family. The major goal of this ransomware is to lure money in the form of ransom. To execute this evil idea, .lokas file virus encrypts the data/files in your system and makes them unreadable. It also creates a unique decryption key to restore .lokas files. Obtaining this key is not a piece of cake! It is stored on the developers serve and is exchanged for hefty ransom amount.

Developers encourage the victims to pay the ransom amount by offering 50% discount. Furthermore, they tell the victims that, if you fail to make the payment, your locked files will be permanently deleted. With the fear of losing their important data, victims get ready to pay the asked ransom.

In addition, it also deletes ‘Shadow Volume Copies’ that are found on your system. It is done to complicate the restoration of the encrypted files. Hence, victims thought that paying the ransom is the only way out of this problem. However, reality has a different face!

 

Threat Summary

Name Lokas Virus
Type Ransomware
Category Malware
Targeted OS Windows
Targeted Bowser Google Chrome, Internet Explorer, Mozilla Firefox

 

Distribution Technique

Lokas ransomware, the name is sufficient for a tech savvy mind to understand its methodology. Developers proliferates Lokas extension primarily via spam campaigns. Under the spam attack, e-mails are sent with catchy subject line. It pretends to be legitimate however, the danger is buried in the content. At times, hackers fix a malicious attachment within the e-mail. The malicious attachment is nothing but the destructive macros.

Once you open the attached file, you allow the malicious macros script to run in your system. As a consequence, your system will get infected by dangerous Lokas ransomware.

Apart from spam attack, Trojans are another deceptive method to distribute this crypto virus. These programs stealthily infiltrate your system with the motive to install other malicious payloads on your system.

To conclude, we can say that the careless behavior and the lack of knowledge are two major reasons for these computer infections. Hence, to avoid the irreversible damage caused by .lokas file virus, you have to be careful during your online sessions.

 

Threat Behavior

Being the variant of a famous ransomware family, Lokas virus infiltrates the system with strong financial motive. Once it makes itself comfortable, it gradually encrypts all the data on the infected system. Alike its siblings, a powerful cryptography algorithm is used to lock the targeted files. Unfortunately, this algorithm generates a unique decryption key on the remote serve for .lokas files. This key is the primary source to blackmail the victims of Lokas ransomware to fulfil the evil idea. Blackmailing starts with the demanding of hefty ransom amount. Ransom is demanded in the form of bitcoins – A crypto currency. Developers say, they will enable the decryption key once the payment is received.

Apart from encrypting the files, .lokas file virus generates a ransom demanding message stored in ‘_readme.txt’ file. This text file is displayed on the screen whenever you try to access a locked file. This message notifies the victims about the demanded ransom amount and the way to get their decryption key. In addition, it also provides the contact detail of the hackers, in case you are unable to make the payment in bitcoins.

Ransom – Demanding Message:

Ransom Note

The ransom demanded is equivalent to $980. However, there is a special offer for the victims, who contact the hackers within 72 hours of Lokas extension virus attack. In this case, you will get a discount of 50% in the ransom amount. It means the ransom amount will be reduced to $490. Keep in mind, the payment, in any case has to be done in the form of bitcoins.

Furthermore, obeying the payment instructions is not the way out! Cyber criminals tend to ignore the victim after receiving the ransom. Hence, it is advisable not to pay the ransom. Instead, focus at the steps for how to remove ransomware virus manually.

 

Removal guidelines for Lokas Ransomware

 

STEP A: Reboot your system to safe mode

Windows 7/ Vista/ XP

  1. Click on Windows icon present in the lower left corner of the computer screen.
  2. Select and click  Restart.
  3. When the screen goes blank, Keep tapping  F8  Key until you see the Advanced Boot Options window.
  4. With the help of arrow keys on keyboard, Select Safe Mode with Networking  option from the list and press the Enter Key. The system will then restart to Safe Mode with Networking.

5 Click on the username and enter the password (if any).

Windows 10 / Windows 8

  1. Press and hold the Shift Key and simultaneously click on the windows icon present in the lower left corner of your computer screen.
  2. While the Shift key is still pressed click on the Power button and then click on Restart.
  3. Now select Troubleshoot → Advanced options → Startup Settings.
  4. When the Startup Settings screen appears which is the first screen to appear after restart, select and click on Enable Safe Mode with Networking. The system will then restart to Safe Mode with Networking.
  5. Click on the username and enter the password.

STEP B: Remove the malicious files in Configuration Settings

  1. Type “Msconfig” in search box / Run Box, select it and press Enter.
  2. Click on “Services” Tab and click on “Hide all Microsoft services”.
  3. Select Lokas ransomware from the list of remaining services and disable it by removing the tick mark from the checkbox and click on Apply button.

Windows 7

  1. Click on the next tab – “Startup”.
  2. Find any blank or suspicious entry or the entry with Lokas ransomware mentioned and remove the check mark.
  3. Click on Apply button and then click on OK.

Windows 10

  1. Click on the next tab – “Startup”.
  2. Take the mouse cursor to ‘Open task Manager‘ link and click on it.  This opens the Task Manager window.
  3. Find any blank or suspicious entry or the entry with Lokas ransomware mentioned and click on it.
  4. Then click on Disable button.

STEP C: Delete the suspicious file from Command Prompt

Once the system starts, ensure to use an account with administrative privilege to access Safe Mode with Command Prompt.

After the user enters admin credentials, Command prompt window is displayed wherein you are entitled to enter the below commands:

  1. Type the command “sc delete Lokas ransomware” in the command prompt and press Enter.
  2. Type “exit” to exit the command prompt and restart the system in safe mode with command prompt.

 

STEP D: Restore system Files & Folders

Method 1 using Control Panel

  1. Click on the ‘Start’ button on the taskbar. This will open the Start menu.
  2. Click on the ‘Control Panel’ button in the Start menu. This will open the control panel window.
  3. In the Control Panel window, click on the ‘View by:’ button on the top right. Select the Large Icon option
  4. In the control Panel window click on the ‘Recovery Icon’. This will open a window that will ask ‘Restore the computer to an earlier point in time’.
  5. Click on the ‘Open system restore’ button. This will open the ‘system restore ’window where you need to click on the Next Button.
  6.  Select the restore point that is prior the infiltration of Lokas ransomware. After doing that, click Next.
  7. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by Lokas ransomware.

OR

Method 2 using Command Prompt

  1. Type cmd in the search box and click on the command prompt to open the Command Prompt window. box and clicking on it.
  2. Once the Command Prompt window shows up, enter cd restore and click Enter.(Ensure that you in the system32 directory of Windows folder in C Drive)
  3. Now type rstrui and press Enter again.
  4. When a new window shows up, click Next and select your restore point that is prior the infiltration of Lokas ransomware. After doing that, click Next.
  5. This will open the ‘Confirm your restore point’ dialog box. Click on Finish button. This will restore your system to a previous restore point before your system was infected by Lokas ransomware.

 

OR

Method 3 : Directly type 'rstrui' in the search box

  1. Type ‘Rstrui’ in the search box present on the task bar. This will open the System restore dialog box.

Continue to follow steps 4 & 5 of Method 2 to restore the System Files and settings.

Tips to prevent your system from Lokas Ransomware

  1. Keeping the Operating System Updated- In order to remain protected and avoid such infections, it is recommended to keep your Operating System updated by enabling the automatic update on your system. The systems with outdated or older versions of Operating System become an easy target for the attackers.
  2. Resist clicking on spam emails – One of the major techniques used for malware distribution is forwarding spam emails to the user. The system gets infected as soon as the user clicks on the attachment. These mails appear to be genuine, so be aware and resist falling for these tricks.
  3. Keep an eye on third party installations- It is quite important that you take due care while installing any third party applications for they are major source of such infections. Such malware programs come bundled with the free applications thereby requiring the user to remain cautious.
  4. Regular periodical backup- In order to keep your data and files safe, it is recommended to take regular back up of all your data and files either on an external drive or cloud.
  5. Use Anti-Virus Protection- We strongly recommend the use of antivirus protection/internet security in your PC like Vipre and Kaspersky so that it remains safe.
  6. Enable the Ad Blocker/Popup Blocker in your browser- Enabling the popup blocker/ ad blocker in your chosen browser will help you to stay protected from annoying adware.

 

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