Home > Ransomware > Session Ransomware [.session Virus Files] Removal Guide
THREAT REMOVAL

Session Ransomware [.session Virus Files] Removal Guide

What is Session Ransomware Virus?

Session Ransomware Virus removal guide

Session ransomware program has appeared in active attack campaigns against users worldwide. The ransomware harasses online users by requesting hefty ransom for the decryption of valuable data. By locking files, the virus prevents victims from reviewing their content.

One of the goals of this malicious software is to damage the settings of essential system components like active security measures. In case of success, it evades detection and runs a complex attack that leaves the infected system extremely vulnerable to future malware attacks.

One of the last things Session ransomware does is the creation of a text file named +README-WARNING+.txt which stores a ransom message with more details about the ransom payment process. All files encrypted by Session ransomware receive three extensions that follow the pattern .[ID number].[].session. Unfortunately, the removal of these three specific extensions cannot restore locked files. They need to be decrypted by a special key and a tool.

If you are one of Session’s virus victims then keep reading this article to learn more about its specifics and the specifics of its complete removal.

Session Summary

Name Session
Type Ransomware, Cryptovirus
Malicious Extension victim’s ID number + square brackets + .session
Short Description A data locker ransomware that utilizes strong cihper algorithm to encrypt personal files stored on the infected computer. It demands a ransom for a decryption solution.
Symptoms Important files are locked and renamed with a long sequence of extensions which ends with the .session extension. Corrupted files remain unusable until their code is reverted back to original state.
Ransom Message +README-WARNING+.txt
Distribution Method Spam Emails, Email Attachments, Corrupted Websites, Software Installers
Detection Tool See If Your System Has Been Affected by malware

Download

Malware Removal Tool

How Does Session Ransomware Spread?

The most popular method used for the distribution of malicious software by malware authors is malspam or spam emails with malicious attachments. Various commonly used types of files may be infected and set to tun malicious commands once they are opened on a computer system.

Links to hacked sites may be promoted by spam email messages too. In the cases when the malicious payload of this threat is hosted by corrupted sites, it runs on computer systems with the help of malicious scripts that perform actions in the background of all other running processes. Such links may be shared on social media and forum topics.

What Does Session Ransomware Do?

Session ransomware has been identified as a strain of a bigger ransomware family called Makop. Why is it useful to know this? Because security researchers who are investigating this ransomware could find a weakness in the code that lets them create a free decryption tool for all victims. Hopefully, this will happen soon and you will be able to restore .session files by the use of one such free tool.

Regarding the infection Session ransomware conducts, it consists of a few stages that disrupt computer security and leave the system extremely vulnerable to infections with additional malware. At first, the threat is likely to establish a bunch of malicious files on the system. These files may be added to the following major system folders:

  • %SystemDrive%
  • %Local%
  • %LocalLow%
  • %AppData%
  • %Windows%
  • %Temp%
  • %System%
  • %system32%

A load of all malicious files leads to the realization of a few attack stages, each of which corrupts the computer system in a different way. The main goal of Session ransomware is to activate its built-in encryption module that is set to scan the system for target types of personal files. The module is unlikely to corrupt system files because the infected system should stay intact in order that victims can review the ransom message and follow hackers’ guidance.

Hackers try to force victims to pay a ransom fee for the decryption of their .session files. Their ransomware drops the file +README-WARNING+.txt to inform victims about its presence and impact. The following message could be read in this file:

Your data is encrypted!

Unfortunately for you, a major IT security weakness left you open to attack, your files have been encrypted
If you want to restore them install ICQ software on your PC here hxxps://icq.com/windows/ or on smartphone from Appstore / Google Play Market search for “ICQ”
Write to our ICQ @Ransomware_Decrypt hxxps://icq.im/Ransomware_Decrypt/
Or download the (Session) messenger (hxxps://getsession.org) in messenger: 0569a7c0949434c9c4464cf2423f66d046e3e08654e4164404b1dc23783096d313 You have to add this Id and we will complete our converstion
Tell us your file ID

Attention!

Do not rename encrypted files.
Do not try to decrypt your data using third party software – it may cause permanent data loss.
We are always ready to cooperate and find the best way to solve your problem.
The faster you write – the more favorable conditions will be for you.
Our company values its reputation. We give all guarantees of your files decryption.
IF WE DON’T SEE MESSAGES FROM YOU IN 72 HOURS – WE WILL SELL YOUR DATABASES AND IMPORTANT INFORMATION TO YOUR COMPETITORS AND OTHER HACKERS IN THE DARKNET.

An information-gathering process may be initiated by the virus too. Sensitive personal data can be obtained and misused for crimes like identity theft, financial abuses, and malware attacks.

A basic Trojan module may be enabled to harvest information and transfer data to criminals’ servers.

.session Virus Files

Files corrupted by Session ransomware are all visible as broken files with the .session extension appended to their original names. A victim’s ID number and square brackets will appear in the names too.

All. session files will remain completely inaccessible until you find an efficient way to restore their original code. To prevent cybercriminals from tricking you once again, you should avoid following their guidance and skip paying the ransom. There is no guarantee that they can send you back a working decryption tool that will recover .session files.

Instead, consider the help of the removal steps below and try to clean your system from malicious files. Afterwards, you can try to recover encrypted files by using some alternative data recovery solutions like the examples shown in the guide below.

Remove Session Ransomware Virus and Attempt to Restore Files

The so-called Session is a threat with a highly complex code that disrupts system security in order to encrypt personal files. Hence the infected system could be used in a secure manner again only after the complete removal of all malicious files and objects created by the ransomware. That’s why it is recommendable that all steps presented in the ransomware removal guide below should be completed. Beware that manual ransomware removal is suitable for more experienced computer users. If you don’t feel comfortable with the manual steps navigate to the automatic part of the guide.

Gergana Ivanova

Highly motivated writer with 5+ years of experience writing for ransomware, malware, adware, PUPs, and other cybersecurity-related issues. As a writer, I strive to create content that is based on thorough technical research. I find joy in the process of creating articles that are easy to understand, informative, and useful. Follow me on Twitter (@IRGergana) for the latest in the field of computer, mobile, and online security.

More Posts

Follow Me:
Google Plus


Attention! SensorsTechForum strongly recommends that all malware victims should look for assistance only by reputable sources. Many guides out there claim to offer free recovery and decryption for files encrypted by ransomware viruses. Be advised that some of them may only be after your money.

As a site that has been dedicated to providing free removal instructions for ransomware and malware since 2014, SensorsTechForum’s recommendation is to only pay attention to trustworthy sources.

How to recognize trustworthy sources:

  • Always check "About Us" web page.
  • Profile of the content creator.
  • Make sure that real people are behind the site and not fake names and profiles.
  • Verify Facebook, LinkedIn and Twitter personal profiles.

OFFER

REMOVE IT NOW (PC)
with Anti-Malware
We recommend you to download SpyHunter and run free scan to remove all virus files on your PC. This saves you hours of time and effort compared to doing the removal yourself.
SpyHunter 5 free remover allows you, subject to a 48-hour waiting period, one remediation and removal for results found. Read EULA and Privacy Policy

About the Session Research

The content we publish on SensorsTechForum.com, this Session how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific malware and restore your encrypted files.

How did we conduct the research on this ransomware?

Our research is based on an independent investigation. We are in contact with independent security researchers, and as such, we receive daily updates on the latest malware and ransomware definitions.

Furthermore, the research behind the Session ransomware threat is backed with VirusTotal and the NoMoreRansom project.

To better understand the ransomware threat, please refer to the following articles which provide knowledgeable details.

References

1. How to Recognize Spam Emails with Ransomware
2. How Does Ransomware Encryption Work?
3. How to Decrypt Ransomware Files
4. Ransomware Getting Greedier and Bigger, Attacks Increase by 40%
5. 1 in 5 Americans Victim of Ransomware



Windows Mac OS X

How to Remove Session from Windows.


Step 1: Boot Your PC In Safe Mode to isolate and remove Session

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows Key + R.


2. The "Run" Window will appear. In it, type "msconfig" and click OK.


3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".

Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.


4. When prompted, click on "Restart" to go into Safe Mode.


5. You can recognise Safe Mode by the words written on the corners of your screen.


Step 2: Uninstall Session and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:


1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.


2. In the field type in "appwiz.cpl" and press ENTER.


3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"

Follow the instructions above and you will successfully uninstall most programs.


Step 3: Clean any registries, created by Session on your computer.

The usually targeted registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by opening the Windows registry editor and deleting any values, created by Session there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.


2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.


3. You can remove the value of the virus by right-clicking on it and removing it.

Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for Session with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.


It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.


2. After you have installed SpyHunter, wait for it to update automatically.

SpyHunter5-update-2018


3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

SpyHunter5-Free-Scan-2018


4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

SpyHunter-5-Free-Scan-Next-2018

If any threats have been removed, it is highly recommended to restart your PC.

Video Guide for Automatic and Fast Removal

Step 5 (Optional): Try to Restore Files Encrypted by Session.

Ransomware infections and Session aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the recommended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on the top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.

Step 6: How to Restore Files Encrypted by Ransomware (Video Guide)


Windows Mac OS X

Get rid of Session from Mac OS X.


Step 1: Uninstall Session and remove related files and objects

OFFER
Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!
We Recommend To Scan Your Mac with SpyHunter for Mac
Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy

1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:


2. Find Activity Monitor and double-click it:


3. In the Activity Monitor look for any suspicious processes, belonging or related to Session:

Tip: To quit a process completely, choose the “Force Quit” option.


4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.


5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to Session. If you find it, right-click on the app and select “Move to Trash

”.


6. Select Accounts, after which click on the Login Items preference.

Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to Session. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.


7. Remove any left-over files that might be related to this threat manually by following the sub-steps below:

  • Go to Finder.
  • In the search bar type the name of the app that you want to remove.
  • Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
  • If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove Session via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as Session. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.


Click the button below below to download SpyHunter for Mac and scan for Session:


Download

SpyHunter for Mac



Step 3 (Optional): Try to Restore Files Encrypted by Session.

Ransomware infections and Session aim to encrypt your files using an encryption algorithm which may be very difficult to decrypt. This is why we have suggested a data recovery method that may help you go around direct decryption and try to restore your files. Bear in mind that this method may not be 100% effective but may also help you a little or a lot in different situations.

1. Download the recommended Data Recovery software by clicking on the link underneath:

Simply click on the link and on the website menus on top, choose Data Recovery - Data Recovery Wizard for Windows or Mac (depending on your OS), and then download and run the tool.


Session FAQ

What is Session ransomware and how does it work?

Session is a ransomware infection - the malicious software that enters your computer silently and blocks either access to the computer itself or encrypt your files.

Many ransomware viruses use sophisticated encryption algorithm how to make your files inaccessible. The goal of ransomware infections is to demand that you pay a ransom payment to get access to your files back.

How does Session ransomware infect my computer?

Via several ways.Session Ransomware infects computers by being sent via phishing e-mails, containing virus attachment.

This attachment is usually masked as an important document, like an invoice, bank document or even a plane ticket and it looks very convincing to users.

After you download and execute this attachment, a drive-by download occurs and your computer is infected with the ransomware virus.

Another way, you may become a victim of Session is if you download a fake installer, crack or patch from a low reputation website or if you click on a virus link. Many users report getting a ransomware infection by downloading torrents.

How to open .Session files?

You can't. At this point the .Session files are encrypted. You can only open them once they are decrypted.

Decryptor did not decrypt my data. What now?

Do not panic and backup the files. If a decryptor did not decrypt your .Session files successfully, then do not despair, because this virus is still new.

One way to restore files, encrypted by Session ransomware is to use a decryptor for it. But since it's a new virus, advised that the decryption keys for it may not be out yet and available to the public. We will update this article and keep you posted as soon as this decryptor is released.

How Do I restore ".Session" files (Other Methods)?

Yes, sometimes files can be restored. We have suggested several file recovery methods that could work if you want to restore .Session files.

These methods are in no way 100% guarantee that you will be able to get your files back. But if you have a backup, your chances of success are much greater.

How do I get rid of Session ransomware virus?

The safest way and the most efficient one for the removal of this ransomware infection is the use a professional anti malware software. It will scan for and locate Session ransomware and then remove it without causing any additional harm to your important .Session files.

Also, keep in mind that viruses like Session ransomware also install Trojans and keyloggers that can steal your passwords and accounts. Scanning your computer with an anti-malware software will make sure that all of these virus components are removed and your computer is protected in the future.

What to Do If nothing works?

There is still a lot you can do. If none of the above methods seem to work for you, then try these methods:

  • Try to find a safe computer from where you can can login on your own line accounts like One Drive, iDrive, Google Drive and so on.
  • Try to contact your friends, relatives and other people so that they can check if they have some of your important photos or documents just in case you sent them.
  • Also, check if some of the files that were encrypted it can be re-downloaded from the web.
  • Another clever way to get back some of your files is to find another old computer, a flash drive or even a CD or a DVD where you may have saved your older documents. You might be surprised what will turn up.
  • You can also go to your email account to check if you can send any attachments to other people. Usually what is sent the email is saved on your account and you can re-download it. But most importantly, make sure that this is done from a safe computer and make sure to remove the virus first.

More tips you can find on our forums, where you can also asks any questions about your ransomware problem.

How to Report Ransomware to Authorities?

In case your computer got infected with a ransomware infection, you can report it to the local Police departments. It can help authorities worldwide track and determine the perpetrators behind the virus that has infected your computer. Below, we have prepared a list with government websites, where you can file a report in case you are a victim of a cybercrime:

Cyber-security authorities, responsible for handling ransomware attack reports in different regions all over the world:

Reports may be responded to in different timeframes, depending on your local authorities.

Leave a Comment

Your email address will not be published.

Share on Facebook Share
Loading...
Share on Twitter Tweet
Loading...
Share on Google Plus Share
Loading...
Share on Linkedin Share
Loading...
Share on Digg Share
Share on Reddit Share
Loading...
Share on Stumbleupon Share
Loading...