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.KokoLocker File Virus – Remove KokoKrypt and Restore Files

This article aims to help you get rid of KokoKrypt Ransomware virus and try to decrypt files encrypted with the .kokolocker file extension added to them.

A ransomware virus, known as KokoKrypt has been reported to encrypt files on computers that have been compromised by it. The virus then adds a file extension .kokolocker after which it adds a ransom note where the virus gives the victim 72 hours to pay a hefty ransom fee. In case you happen to be a victim of KokoKrypt ransomware, advice are not to pay the requested by the crooks sum of 0.1 BTC and instead to read the following article. It will help you learn more about KokoKrypt and more on how to remove the virus and restore your files in case they have been encrypted by it.

Threat Summary

Name

KokoKrypt

TypeRansomware
Short DescriptionThe malware encrypts users files using a strong encryption algorithm, making direct decryption possible only via a unique decryption key available to the cyber-criminals.
SymptomsThe user may witness ransom notes and “instructions” linking to a web page and a decryptor. Changed file names and the file-extension .kokolocker has been used.
Distribution MethodVia an Exploit kit, Dll file attack, malicious JavaScript or a drive-by download of the malware itself in an obfuscated manner.
Detection Tool See If Your System Has Been Affected by KokoKrypt

Download

Malware Removal Tool

User ExperienceJoin our forum to Discuss KokoKrypt.
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.

How Does KokoKrypt Spread

To be replicated and infect, the criminals behind KokoKrypt may use either malicious attachments or malicious web links.

If they use an attachment, the crooks behind KokoKrypt ransomware may take advantage of a variety of tools such as exploit kits, infection downloader, and malware obfuscators that all contribute to undetected infection. They may upload the attachments posing as legitimate Microsoft Office documents or other types of seemingly legitimate files.

If the scenario is that malicious web links are used, the crooks may conceal them as fake buttons on well-designed phishing e-mails coming from websites, like Facebook, PayPal, and other big names. One example may be if you receive an e-mail that someone sent you a Facebook friend request and there is a button on the e-mail that may say “Add Friend” or something in proximity.

KokoKrypt – More Information

After the victim opens a web link or a malicious file, the infection has already been initiated and malicious scripts may be injected in legitimate Windows processes, such as:

  • Vssadmin
  • Csrss.exe
  • Lsass.exe
  • Services.exe
  • Svchost.exe
  • Smss.exe

Then the malicious payload of KokoKrypt ransomware is usually downloaded in some of several key Windows folders under different names, for example:

After the malicious files of KokoKrypt have been downloaded and activated, the virus may get right down to business. KokoKrypt attacks numerous files of importance to the user, such as videos, photos, documents and other files. The file extensions it may be pre-programmed to encipher are the following:

→ “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

After this has been done, the encrypted files can no longer be opened, because bytes of those files are replaced with strong encryption. They look like the following:

To make the user known of it’s presence, KokoKrypt ransomware uses a pop-up message with the following content:

— KoKoKrypt —
All of your personal data got encrypted by KokoKrypt!
To unlock all your data of this computer, you have to do the following steps:
1. Get a Bitcoin Wallet
2. Get 0.1 BTC on it
3. Put your BTC Address below
4. Wait for decryption process
Payment may be delayed for 24/48 hours, so don’t worry! You have 78h to pay!
After 78h, KoKoKrypt will uninstall itself and leave your files encrypted!
Button “Pay using Bitcoin.”

Remove .KokoLocker File Virus and Restore Encrypted Files

Experts advise not to pay cyber-criminals who are behind KokoKrypt ransomware, for obvious reasons:

  • You cannot trust them to restore your files.
  • You are aiding them to further spread their malware and develop it.

This is why it is recommended to focus on removing KokoKrypt by yourself. To simplify the removal process, we have created removal instructions below. In case you lack the experience in manually removing KokoKrypt ransomware, we advise you to go straight to the Automatic part of those instructions.

After having removed KokoKrypt from your computer, it is strongly advisable to focus on trying to restore the encrypted data. One method of doing this is to follow the alternative tools we have suggested in step “2. Restore files, encrypted by KokoKrypt” below. They are not 100% guaranteed but with their aid, you may restore at least some of your files, at least until malware researchers come up with a decryptor, which, if happens, we will make sure to update this article.

Manually delete KokoKrypt from your computer

Note! Substantial notification about the KokoKrypt threat: Manual removal of KokoKrypt requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

1. Boot Your PC In Safe Mode to isolate and remove KokoKrypt files and objects
2.Find malicious files created by KokoKrypt on your PC

Automatically remove KokoKrypt by downloading an advanced anti-malware program

1. Remove KokoKrypt with SpyHunter Anti-Malware Tool and back up your data
2. Restore files encrypted by KokoKrypt
Optional: Using Alternative Anti-Malware Tools

Vencislav Krustev

A network administrator and malware researcher at SensorsTechForum with passion for discovery of new shifts and innovations in cyber security. Strong believer in basic education of every user towards online safety.

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