THREAT REMOVAL

What Is “Ooops, Your important files are encrypted”

This article aims to explain what is “Ooops, Your important files are encrypted” ransomware and how to remove WannaCry and attempt to restore .WNCRY .WCRY or .WNCRYT files encrypted by this infection.

Update July 2017! New ransomware outbreak inspired by the WannaCry ransomware, also using “Oops your important files have been encrypted” has been detected. The virus is a modified version of Petya ransomware. More information can be found on this web link.

Threat Summary

Name

WannaCry

TypeRansomware
Short DescriptionAims to encrypt the files on the compromised computer and hold them hostage for a ransom payoff of $300 in BitCoin.

SymptomsThe files on the compromised computers may be encrypted with the .WNCRY .WCRY or .WNCRYT (for temp and other files) file extensions. A ransom note, named @Please_Read_Me@.txt is dropped with instructions on what to do. The wallpaper is changed to the “Ooops, Your important files are encrypted” one.
Distribution MethodVia exploits leaked from “Lost In Translation” leak by “The Shadow Brokers” hacking group. Via botnet and worm.
Detection Tool See If Your System Has Been Affected by malware

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Malware Removal Tool

User ExperienceJoin our forum to Discuss WannaCry.
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.

Update May 2017! Malware researchers have managed to trigger multiple kill switches on the recent ransomware outbreak from the WannaCry virus which drops a ransom note, beginning with “Ooops, Your important files are encrypted”. The virus aims for one thing only – to use an AES-128 encryption in order to encrypt the important documents, videos, music and other files on the computers infected by it. One particular malware researcher, MalwareTech @MalwareTechBlog has managed to successfully locate domains that are distribution sites of the ransomware and register them in order to stop the infection process, calling it kill switch domains. However, the WannaCry ransomware continues to spread and may soon come in a new version. Read this article in case you have become a victim of this virus and wish to remove it and try to get back your files.

Update June 2017! WannaCry ransomware which is often referred to as “Ooops, Your important files are encrypted” virus appears to be active once again. It is highly possible that there are new spam campaigns distributing the ransomware. We remind you to be extra vigilant when dealing with .zip and .rar email attachments. Such emails often try to trick users into enabling macros in the attached .Word documents. However, the ransomware may also be relying on new exploits and vulnerabilities to spread itself to as many machines as possible. WannaCry a.k.a. “Ooops, Your important files are encrypted” ransomware has already taken way too many victims. Make sure to spread the word so that more users worldwide are aware of the real danger of having all their important data encrypted.

Also, keep in mind that there is another ransomware – Marlboro – using a similar ransom note and appending the .oops file extension to files. This ransomware has been decrypted.

“Ooops, Your important files are encrypted” – Infection

For it to infect a targeted computer, the WannaCry ransomware virus may take advantage of the ETERNALBLUE and DOUBLEPULSARE exploits from the leak. However, the leak revealed multiple other exploits which may be used in the infection process. These exploits are known to be the following:

→EASYBEE EASYPI EWOKFRENZY EXPLODINGCAN ETERNALROMANCE EDUCATEDSCHOLAR EMERALDTHREAD EMPHASISMINE ENGLISHMANSDENTIST ERRATICGOPHER ETERNALSYNERGY ETERNALBLUE ETERNALCHAMPION ESKIMOROLL ESTEEMAUDIT ECLIPSEDWING EXPANDINGPULLEY GROK FUZZBUNCH DOUBLEPULSAR PASSFREELY ODDJOB JEEPFLEA_MARKET

In addition to this, the ransomware virus has also been reported to conducts it’s attacks via the Server Message Block protocol, also known as SMB. In order to learn how to disable all SMB activity on your computer, we recommend you to watch the following video.

In addition to this, one of the replication methods that were associated with WannaCry ransomware is via a Worm infection, meaning that the virus can automatically spread from one system to another. This is particularly dangerous, because while you are doing your daily activity, you can suddenly see the “Ooops, Your important files are encrypted” without even having to do anything. All it takes is another infected computer to spread the virus. Here is a demonstration video below by researcher Kevin Beaumont (@GossiTheDog):


“Ooops, Your important files are encrypted” – Activity

After an infection by the latest iteration of WannaCry ransomware occurs, it immediately begins to modify the computer. One of the modifications is performed with the aid of a .VBS script, also known as Visual Basic Script. It uses this script to obtain administrative permissions on the infected computer. After it has done this, the virus drops a locked .zip file on the infected computer, called wcry.zip. This file is extracted and on multiple Windows folders, the following malicious files of the malware are dropped:

  • t.wnry
  • u.wnry
  • taskse.exe
  • taskdl.exe
  • b.wnry
  • c.wnry
  • r.wnry
  • s.wnry

The malware also uses different c2 addresses to connect to TOR-based webpages in order to relay information about the infected system. In addition to this, the WannaCry ransomware grants administrative permissions in order to be able to change the wallpaper to “Ooops, Your important files are encrypted”, encrypt files and perform multiple other tasks. The command it uses to get permissions is the following:

→ icacls . /grant Everyone:F /T /C /Q

After this activity has already completed, the ransomware infection has now administrative control and it shuts down any database processes if it detects them to be present on the infected computer:

  • Mysqld.exe
  • MSExchange
  • Sqlwriter.exe
  • Sqlserver.exe
  • Microsoft.Exchange

But this is not all of the activity performed by this ransomware infection. The virus also aims to perform multiple other tasks on the infected computer, like tampering with the following Windows Registry editor keys:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run\
HKCU\Software\WanaCrypt0r\
HKCU\Software\WanaCrypt0r\wd
HKCU\Control Panel\Desktop\Wallpaper

This Is done so that the malicious files of the WannaCry ransomware run when you start Windows and the wallpaper can be changed to the “Ooops, Your important files are encrypted” ransom message.

Q: What’s wrong with my files?

A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted.
If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely!
Let’s start decrypting!

Q: What do I do?

A: First, you need to pay service fees for the decryption.
Please send $300 worth of bitcoin to this bitcoin address: 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw

Next, please find an application file named “@WanaDecryptor@.exe”. It is the decrypt software.
Run and follow the instructions! (You may need to disable your antivirus for a while.)

Q: How can I trust?

A: Don’t worry about decryption.
We will decrypt your files surely because nobody will trust us if we cheat users.

* If you need our assistance, send a message by clicking on the decryptor window.

After this has been performed, the virus also makes sure to delete all the system restore points and shadow copies of the compromised computer:

→ vssadmin delete shadows /all /quiet
wmic shadowcopy delete
bcdedit /set boostatuspolicy ignoreallfailures
bcdedit /set {default} recoveryenabled no & wbadmin delete catalog –quiet

It’s final activity after encrypting the files is to drop it’s ransom note and open it. The file is called @WanaDecrypt0r@.exe and has a timer for the payoff:

.WNCRY .WCRY .WNCRYT Files – Encryption

The encryption process of this ransomware virus comprises of the usage of the AES (Advanced Encrytpion Standard) with a bit strength of 128. It encrypts the files on the compromised computer and then a public and private RSA-2048 key is there to make sure that the symmetric key generated from the AES encryption is encrypted and public and private key is generated from this. However, multiple RSA private keys may also be generated for each file. The cyber-criminals may be In posession of a master key that unlocks all AES RSA encrypted keys.

The files which the ransomware looks for are the following types:

→ .ldf, .sln, .suo, .cpp, .pas, .asm, .cmd, .bat, .vbs, .dip, .dch, .sch, .brd, .jsp, .php, .class, .wav, .swf, .fla, .wmv, .mpg, .vob, .mpeg, .asf, .avi, .mov, .mkv, .flv, .wma, .mid, .djvu, .svg, .psd, .nef, .tiff, .tif, .cgm, .raw, .gif, .png, .bmp, .jpg, .jpeg, .vcd, .iso, .backup, .zip, .rar, .tgz, .tar, .bak, .tbk, .PAQ, .ARC, .aes, .gpg, .vmx, .vmdk, .vdi, .sldm, .sldx, .sti, .sxi, .hwp, .snt, .onetoc2, .dwg, .pdf, .wks, .rtf, .csv, .txt, .vsdx, .vsd, .edb, .odp, .otp, .sxd, .std, .uop, .odg, .otg, .sxm, .mml, .lay, .lay6, .asc, .sqlite3, .sqlitedb, .sql, .accdb, .mdb, .dbf, .odb, .frm, .myd, .myi, .ibd, .mdf, .msg, .ost, .pst, .potm, .potx .eml, .der, .pfx, .key, .crt, .csr, .pem, .odt, .ott, .sxw, .stw, .uot, .max, .ods, .ots, .sxc, .stc, .dif, .slk, .asp, .java, .ppam, .ppsx, .ppsm, .pps, .pot, .pptm, .pptx, .ppt, .xltm, .xltx, .xlc, .xlm, .xlt, .xlw, .xlsb, .xlsm, .xlsx, .xls, .dotx, .dotm, .dot, .docm, .docb, .docx, .doc, .jar

If detected the WannaCry rasomware virus encrypts them and they may appear like the following, depending on which variant of the virus you have been infected by:

WannaCry Ransomware – Remove, Restore Files and Protect Yourself

In the event that the inevitable has happened, your first symptom of noticing this virus should be to see the icons of the ransomware on your computer. They look like the following:

If you see those files, you should IMMEDIATELY power off your computer and take out the hard drive from it to allow specialists to salvage what is left of your files without triggering the virus. In case this has already happened, we advise you to look into the instructions below to remove the ransomware. For the removal of the Wana Decrypt0r 2.0 threat, security experts outline the best method to be using an advanced anti-malware software to perform the removal automatically, especially if you lack the experience in manual removal. In order to attempt and restore encrypted files, at the moment there is no decryptor that is free and leaked out into the public, but we have multiple reports of users managing to restore chunks of their files using alternative methods. Such tools you can find in the step “2. Restore files encrypted by WannaCry” below.

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Ventsislav Krastev

Ventsislav is a cybersecurity expert at SensorsTechForum since 2015. He has been researching, covering, helping victims with the latest malware infections plus testing and reviewing software and the newest tech developments. Having graduated Marketing as well, Ventsislav also has passion for learning new shifts and innovations in cybersecurity that become game changers. After studying Value Chain Management, Network Administration and Computer Administration of System Applications, he found his true calling within the cybersecrurity industry and is a strong believer in the education of every user towards online safety and security.

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Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

How to Remove WannaCry from Windows.


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

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 WannaCry 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 WannaCry 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 WannaCry 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 WannaCry 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.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer

Get rid of WannaCry from Mac OS X.


Step 1: Uninstall WannaCry 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 WannaCry:

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 WannaCry. 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 WannaCry. 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 WannaCry 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 WannaCry. 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.


Step 2: Scan for and remove malware from your Mac

When you are facing problems on your Mac as a result of unwanted scripts, programs and malware, the recommended way of eliminating the threat is by using an anti-malware program. Combo Cleaner offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove WannaCry from Google Chrome.


Step 1: Start Google Chrome and open the drop menu


Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"


Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.


Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Erase WannaCry from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window


Step 2: Select the "Add-ons" icon from the menu.


Step 3: Select the unwanted extension and click "Remove"


Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Uninstall WannaCry from Microsoft Edge.


Step 1: Start Edge browser.


Step 2: Open the drop menu by clicking on the icon at the top right corner.


Step 3: From the drop menu select "Extensions".


Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.


Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.



Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Remove WannaCry from Safari.


Step 1: Start the Safari app.


Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.


Step 3: From the menu, click on "Preferences".

stf-safari preferences


Step 4: After that, select the 'Extensions' Tab.

stf-safari-extensions


Step 5: Click once on the extension you want to remove.


Step 6: Click 'Uninstall'.

stf-safari uninstall

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the WannaCry will be removed.


How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.


Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer


Eliminate WannaCry from Internet Explorer.


Step 1: Start Internet Explorer.


Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'


Step 3: In the 'Manage Add-ons' window.


Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.


Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.


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