Computer security experts discovered a new variant of ransomware which called Kropun ransomware. It appends the .kropun file extension to encrypted file names. This post will provide you a brief summary of information related to this new ransomware virus and how to restore or decrypt .kropun files for free.
Once started, the Kropun ransomware will scan the personal computer for some file types and encrypt them. It will encrypt almost of files, including:
.yml, .litemod, .csv, wallet, .wdb, .ysp, .esm, .zip, .xlk, .2bp, .blob, .itdb, .pfx, .sr2, .xmind, .rwl, .bkf, .mrwref, .lrf, .odp, .wmv, .dazip, .zif, .dmp, .sis, .wpw, .mddata, .wsc, .wmf, .kdc, .docm, .pkpass, .lvl, .zw, .1, .rar, .xar, .x3d, .odm, .raf, .wpd, .flv, .1st, .wbc, .sidn, .3ds, .rtf, .bar, .xld, .xll, .psd, .wma, .desc, .tax, .accdb, .wp5, .xdl, .pef, .tor, .cfr, .rim, .xls, .das, .z, .orf, .3fr, .wp4, .d3dbsp, .ltx, .vpp_pc, .xls, .t12, .sidd, .wm, .w3x, .zabw, .snx, .itm, .pem, .eps, .iwi, .ibank, .y, .ntl, .xpm, .cr2, .xyw, .webp, .xbplate, .xx, .hkx, .xxx, .layout, .wn, .db0, .odt, .avi, .3dm, .lbf, .sie, .bkp, .hplg, .z3d, .mdf, .wav, .xlsx, .zdb, .sum, .wcf, .dcr, .itl, .vdf, .srf, .doc, .p7c, .ods, .wpl, .ai, .bc7, .wbm, .dba, .wbd, .mdb, .xbdoc, .gdb, .cer, .m2, .xf, .mpqge, .p12, .dng, .icxs, .0, .srw, .ff, .pdd, .x3f, .forge, .xdb, .asset, .7z, .wri, .qdf, .ppt, .dxg, .py, .xlsm, .vtf, .vcf, .sql, .crt, .bsa, .wdp, .wmv, .fos, .ztmp, .wmd, .erf, .wp6, .pptm, .hkdb, .r3d, .jpeg, .wpg, .wsh, .fpk, .rb, .svg, .wbz, .pak, .ncf, .dbf, .raw, .xy3, .wma, .pptx, .xlsb, .wps, .bik, .arch00, .wpa, .cdr, .xlgc, .pst, .vfs0, .mef, .wp, .vpk, .zdc, .rofl, .re4
When the ransomware virus encrypts a file, it will append .kropun file extension to each encrypted file. Once the virus finished enciphering of all personal files, it will drop a file named “_readme.txt” with ransom instructions on how to decrypt all files. You can see an one of the variants of the ransomnote below:
ATTENTION! Don't worry my friend, you can return all your files! All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-T9WE5uiVT6 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: email@example.com Reserve e-mail address to contact us: firstname.lastname@example.org Your personal ID:
Use the step-by-step steps below to delete the ransomware itself and try to decrypt (recover) encrypted personal files for free.
Table of contents
- How to remove .Kropun ransomware virus
- How to decrypt .kropun files
- Use STOPDecrypter to decrypt .kropun files
- How to restore .kropun files
- How to protect your computer from .Kropun ransomware virus?
- Finish words
How to remove .Kropun ransomware virus
We can help you delete .Kropun ransomware, without the need to take your personal computer to a professional. Simply follow the removal guidance below if you currently have the ransomware on your PC and want to get rid of it. If you have any difficulty while trying to delete this virus, feel free to ask for our help in the comment section below. Read it once, after doing so, please print this page as you may need to exit your browser or reboot your machine.
How to remove .Kropun ransomware with Zemana Anti-malware
You can remove .Kropun ransomware automatically with a help of Zemana Anti-malware. We suggest this malware removal tool because it can easily delete viruses, worms, trojans, potentially unwanted software, adware software and toolbars with all their components such as folders, files and registry entries.
Zemana can be downloaded from the following link. Save it to your Desktop.
Author: Zemana Ltd
Category: Security tools
Update: July 16, 2019
Once the downloading process is finished, close all windows on your PC system. Further, run the set up file named Zemana.AntiMalware.Setup. If the “User Account Control” dialog box pops up like below, click the “Yes” button.
It will show the “Setup wizard” that will assist you install Zemana on the machine. Follow the prompts and do not make any changes to default settings.
Once setup is finished successfully, Zemana Free will automatically start and you can see its main window as shown in the figure below.
Next, click the “Scan” button to perform a system scan for the .Kropun ransomware related files, folders and registry keys. This process can take quite a while, so please be patient. During the scan Zemana Free will locate threats present on your personal computer.
Once Zemana Anti Malware has finished scanning your personal computer, Zemana Free will open a list of found threats. Make sure all items have ‘checkmark’ and press “Next” button.
The Zemana Anti-Malware (ZAM) will begin to remove .Kropun ransomware virus and other malicious software. Once the clean up is finished, you may be prompted to restart your personal computer.
How to remove Kropun ransomware with MalwareBytes Free
We advise using the MalwareBytes Free that are completely clean your system of the Kropun ransomware. This free utility is an advanced malicious software removal program designed by (c) Malwarebytes lab. This program uses the world’s most popular anti-malware technology. It’s able to help you remove ransomware virus, potentially unwanted apps, malware, adware, toolbars, and other security threats from your personal computer for free.
- MalwareBytes Anti Malware (MBAM) can be downloaded from the following link. Save it to your Desktop.
Category: Security tools
Update: April 15, 2020
- At the download page, click on the Download button. Your browser will show the “Save as” dialog box. Please save it onto your Windows desktop.
- After downloading is done, please close all applications and open windows on your computer. Double-click on the icon that’s called mb3-setup.
- This will open the “Setup wizard” of MalwareBytes Free onto your personal computer. Follow the prompts and do not make any changes to default settings.
- When the Setup wizard has finished installing, the MalwareBytes Anti-Malware will start and open the main window.
- Further, click the “Scan Now” button to perform a system scan with this tool for the Kropun ransomware virus related files, folders and registry keys. Depending on your computer, the scan can take anywhere from a few minutes to close to an hour. While the MalwareBytes AntiMalware tool is scanning, you can see number of objects it has identified as being infected by malware.
- After finished, MalwareBytes will show a list of all threats found by the scan.
- Once you’ve selected what you want to remove from your PC click the “Quarantine Selected” button. When finished, you may be prompted to reboot the personal computer.
- Close the Anti-Malware and continue with the next step.
Video instruction, which reveals in detail the steps above.
Remove .Kropun ransomware from personal computer with KVRT
The KVRT tool is free and easy to use. It can scan and remove malicious software like the .Kropun ransomware and thereby revert back system settings. KVRT is powerful enough to find and remove malicious registry entries and files that are hidden on the PC system.
Download Kaspersky virus removal tool (KVRT) by clicking on the link below. Save it to your Desktop.
Author: Kaspersky® lab
Category: Security tools
Update: March 5, 2018
Once downloading is done, double-click on the KVRT icon. Once initialization procedure is done, you’ll see the KVRT screen as shown on the image below.
Click Change Parameters and set a check near all your drives. Press OK to close the Parameters window. Next press Start scan button to perform a system scan with this utility for the .Kropun ransomware virus and other malicious software. A system scan may take anywhere from 5 to 30 minutes, depending on your personal computer. While the KVRT is checking, you can see how many objects it has identified either as being malware.
Once the system scan is finished, you can check all threats detected on your system as shown on the screen below.
Review the scan results and then click on Continue to begin a cleaning procedure.
How to decrypt .kropun files
The .Kropun ransomware virus offers victim to contact it’s authors in order to decrypt all photos, documents and music. These persons will require to pay a ransom (usually demand for $490-980 in Bitcoins).
Never pay the ransom! You might feel that you have no other choice but to pay up and decrypt .kropun files. There is no guarantee that the creators of .Kropun ransomware virus will live up to the word and give back your documents, photos and music.
Use STOPDecrypter to decrypt .kropun files
Michael Gillespie (@) released a free decryption tool named STOPDecrypter (download from download.bleepingcomputer.com/demonslay335/STOPDecrypter.zip).
STOPDecrypter has been updated to include decryption support for the following .djvu* variants (.djvu, .djvuu, .udjvu, .djvuq, .djvur, .djvut, .pdff, .tro, .tfude, .tfudeq, .tfudet, .rumba, .adobe, .adobee, .blower, .promos. STOPDecrypter will work for any extension of the Djvu* variants including new extensions (.kropun).
Please check the twitter post for more info.
How to restore .kropun files
In some cases, you can recover files encrypted by .Kropun ransomware virus. Try both methods. Important to understand that we cannot guarantee that you will be able to recover all encrypted personal files.
Recover .kropun encrypted files using Shadow Explorer
A free tool named ShadowExplorer is a simple method to use the ‘Previous Versions’ feature of MS Windows 10 (8, 7 , Vista). You can restore .kropun files encrypted by the .Kropun ransomware virus from Shadow Copies for free.
Download ShadowExplorer on your MS Windows Desktop from the following link.
Category: Security tools
Update: September 15, 2019
Once the download is complete, open a directory in which you saved it. Right click to ShadowExplorer-0.9-portable and select Extract all. Follow the prompts. Next please open the ShadowExplorerPortable folder as shown on the screen below.
Double click ShadowExplorerPortable to run it. You will see the a window as displayed in the following example.
In top left corner, choose a Drive where encrypted personal files are stored and a latest restore point as displayed in the following example (1 – drive, 2 – restore point).
On right panel look for a file that you wish to restore, right click to it and select Export as on the image below.
Run PhotoRec to recover .kropun files
Before a file is encrypted, the .Kropun ransomware makes a copy of this file, encrypts it, and then deletes the original file. This can allow you to recover your photos, documents and music using file recover programs like PhotoRec.
Download PhotoRec on your computer by clicking on the link below.
Category: Security tools
Update: March 1, 2018
When the downloading process is done, open a directory in which you saved it. Right click to testdisk-7.0.win and choose Extract all. Follow the prompts. Next please open the testdisk-7.0 folder as shown on the image below.
Double click on qphotorec_win to run PhotoRec for Microsoft Windows. It’ll show a screen as on the image below.
Choose a drive to recover as shown on the image below.
You will see a list of available partitions. Select a partition that holds encrypted photos, documents and music like below.
Click File Formats button and choose file types to recover. You can to enable or disable the restore of certain file types. When this is complete, press OK button.
Next, press Browse button to select where restored files should be written, then click Search.
Count of recovered files is updated in real time. All restored photos, documents and music are written in a folder that you have selected on the previous step. You can to access the files even if the restore process is not finished.
When the restore is finished, click on Quit button. Next, open the directory where recovered files are stored. You will see a contents as on the image below.
All recovered documents, photos and music are written in recup_dir.1, recup_dir.2 … sub-directories. If you’re looking for a specific file, then you can to sort your restored files by extension and/or date/time.
How to protect your computer from .Kropun ransomware virus?
Most antivirus apps already have built-in protection system against the virus. Therefore, if your computer does not have an antivirus program, make sure you install it. As an extra protection, use the HitmanPro.Alert.
Run HitmanPro.Alert to protect your PC from .Kropun ransomware
HitmanPro.Alert is a small security utility. It can check the system integrity and alerts you when critical system functions are affected by malware. HitmanPro.Alert can detect, remove, and reverse ransomware effects.
Installing the HitmanPro Alert is simple. First you’ll need to download HitmanPro.Alert by clicking on the following link.
Category: Security tools
Update: March 6, 2019
When the download is finished, open the directory in which you saved it. You will see an icon like below.
Double click the HitmanPro Alert desktop icon. Once the tool is started, you’ll be displayed a window where you can select a level of protection, as shown on the image below.
Now press the Install button to activate the protection.
Now your system should be clean of the .Kropun ransomware virus. Delete MalwareBytes Free and KVRT. We suggest that you keep Zemana (to periodically scan your computer for new malware). Make sure that you have all the Critical Updates recommended for Microsoft Windows OS. Without regular updates you WILL NOT be protected when new virus, harmful software and adware are released.
If you are still having problems while trying to get rid of .Kropun ransomware from your system, then ask for help here.