A new ransomware virus, called DNRansomware also referred to as DoNotOpen ransomware by malware researchers has been reported to cause issues to systems. The virus locks the files on the compromised computers, appending the .killedXXX file extension to them and asking the victims to pay a hefty ransom fee of around 0.5 BTC in order to get the files back. Anyone who has become a victim of this virus is advised not to pay a dime and read the following material. It will help you learn more about DNRansomware and how to remove it and try restoring files back to their working state.
|Short Description||A ransomware type of virus that not only locks the screen of the infected computers, but also encrypts the files with a broken AES cipher that is reported to be undecryptable.|
|Symptoms||The .killedXXX file extension is added to every encrypted file and the sum of 0.5 BTC is demanded from the victims after an infection by this ransomware virus. Also, a lock-screen that is unlock-able is present.|
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|User Experience||Join our forum to Discuss DNRansomware.|
|Data Recovery Tool||Windows 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.|
DNRansomware Virus – Spread
To be widespread, similar to Sage 2.0 Ransomware and cause a successful infection on targeted computers, the creators of DNRansomware may undertake multiple different steps towards spreading this virus. One of those is surely the usage of fake Google Chrome update file which actually masks the malicious DNRansomware’s payload carrying file. The ransomware has been reported to possibly be spread via e-mail spam messages and malicious applications, pretending to be legitimate programs. Other instances of it may be detected when you see a fake Adobe Flash Player updates on your computer. Even though it is not confirmed, researchers feel convinced that installers of legitimate programs may also be infected with the DNRansomware virus.
DNRansomware – More Information
Once the user is infected, one way or the other, the virus immediately commences a lock-screen on his computer. This type of lock-screen attack has one purpose only and it is to scare the user off to pay a hefty ransom fee to get the files back:
After the lock-screen by DNRansowmare is displayed, users are advised not t pay any type of ransom to unlock their computer, because the password to unlock this lock screen is:
But, if you unlock your screen, you may still find the ransom note of the DNRansomware virus:
This ransom note aims to explain the whole situation for the user and even provide detail instructions on how to pay the hefty ransom fee and hopefully try to get the encrypted files restored back to their initial state.
Howver, malware researchers have detected that this is impossible, even if the victim pays, because the decrypter of the ransomware may appear to be broken. One more reason why paying is highly not recommended.
To encrypt the files, the virus says it uses RIJNDAEL algorithm, which is correct. Researchers have reported it to use the AES cipher to replace bits of the files it encrypts and make them unable to be opened. AES is another name for Rijndael which is a cipher used by the government for confidential files.
To encrypt files, DNRansomware may look for different types of often used data, for example:
→ “PNG .PSD .PSPIMAGE .TGA .THM .TIF .TIFF .YUV .AI .EPS .PS .SVG .INDD .PCT .PDF .XLR .XLS .XLSX .ACCDB .DB .DBF .MDB .PDB .SQL .APK .APP .BAT .CGI .COM .EXE .GADGET .JAR .PIF .WSF .DEM .GAM .NES .ROM .SAV CAD Files .DWG .DXF GIS Files .GPX .KML .KMZ .ASP .ASPX .CER .CFM .CSR .CSS .HTM .HTML .JS .JSP .PHP .RSS .XHTML. DOC .DOCX .LOG .MSG .ODT .PAGES .RTF .TEX .TXT .WPD .WPS .CSV .DAT .GED .KEY .KEYCHAIN .PPS .PPT .PPTX ..INI .PRF Encoded Files .HQX .MIM .UUE .7Z .CBR .DEB .GZ .PKG .RAR .RPM .SITX .TAR.GZ .ZIP .ZIPX .BIN .CUE .DMG .ISO .MDF .TOAST .VCD SDF .TAR .TAX2014 .TAX2015 .VCF .XML Audio Files .AIF .IFF .M3U .M4A .MID .MP3 .MPA .WAV .WMA Video Files .3G2 .3GP .ASF .AVI .FLV .M4V .MOV .MP4 .MPG .RM .SRT .SWF .VOB .WMV 3D .3DM .3DS .MAX .OBJ R.BMP .DDS .GIF .JPG ..CRX .PLUGIN .FNT .FON .OTF .TTF .CAB .CPL .CUR .DESKTHEMEPACK .DLL .DMP .DRV .ICNS .ICO .LNK .SYS .CFG”Source:fileinfo.com
The encrypted files may have the .killedXXX file extension appended to them and may look like the following:
Remove DNRansomware and Restore .killedXXX Encrypted Files
Since you do not have another option, we advise you to follow the following steps:
Step 1: Secure the encrypted files. Back them up on a thumb drive, in the cloud or anywhere where you may find useful.
Step 2: Remove DNRasnomware. One way to do it is by following the removal instructions below. These instructions will help you remove the virus. If you lack the experience in manual removal or want to be sure the virus is eliminated, experts recommend using a particular anti-malware tool that will detect all files and other objects associated with DNRansomware and get rid of them.
Step 3: Try to restore your files using other methods while hopefully a free decryptor is released. We have suggested several alternative tools in step “2. Restore files encrypted by DNRansomware” below to help recover your information and some of those might be of use to you. Remember to use them after you have backed up the encrypted files.
- Guide 1: How to Remove DNRansomware from Windows.
- Guide 2: Get rid of DNRansomware on Mac OS X.
- Guide 3: Remove DNRansomware in Google Chrome.
- Guide 4: Erase DNRansomware from Mozilla Firefox.
- Guide 5: Uninstall DNRansomware from Microsoft Edge.
- Guide 6: Remove DNRansomware from Safari.
- Guide 7: Eliminate DNRansomware from Internet Explorer.
- Guide 8: Disable DNRansomware Push Notifications in Your Browsers.
How to Remove DNRansomware from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove DNRansomware
Step 2: Uninstall DNRansomware 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.
Step 3: Clean any registries, created by DNRansomware on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by DNRansomware there. This can happen by following the steps underneath:
Get rid of DNRansomware from Mac OS X.
Step 1: Uninstall DNRansomware and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- 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 DNRansomware 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:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove DNRansomware files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as DNRansomware, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Remove DNRansomware 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.
Erase DNRansomware 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.
Uninstall DNRansomware 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.
Remove DNRansomware 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".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the DNRansomware will be removed.
Eliminate DNRansomware 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.
Remove Push Notifications caused by DNRansomware from Your Browsers.
Turn Off Push Notifications from Google Chrome
To disable any Push Notices from Google Chrome browser, please follow the steps below:
Step 1: Go to Settings in Chrome.
Step 2: In Settings, select “Advanced Settings”:
Step 3: Click “Content Settings”:
Step 4: Open “Notifications”:
Step 5: Click the three dots and choose Block, Edit or Remove options:
Remove Push Notifications on Firefox
Step 1: Go to Firefox Options.
Step 2: Go to “Settings”, type “notifications” in the search bar and click "Settings":
Step 3: Click “Remove” on any site you wish notifications gone and click “Save Changes”
Stop Push Notifications on Opera
Step 1: In Opera, press ALT+P to go to Settings
Step 2: In Setting search, type “Content” to go to Content Settings.
Step 3: Open Notifications:
Step 4: Do the same as you did with Google Chrome (explained below):
Eliminate Push Notifications on Safari
Step 1: Open Safari Preferences.
Step 2: Choose the domain from where you like push pop-ups gone and change to "Deny" from "Allow".