The File Extensions Database


.KRAB File Extension

  • Category: Encoded Files

What is an .KRAB file?

.KRAB is GandCrab V4 Ransomware Encrypted File

A KRAB file is a file encrypted by the GandCrab V4 virus, a trojan horse utilized by cybercriminals. It contains a user's file, such as a .XLSX or .MP4 file, encrypted with the Salsa20 algorithm. KRAB files became prevalent in July 2018 and are similar to .GDCB files.

The GandCrab V4 virus is ransomware, where the purpose of the virus is to take your computer files hostage and force you to pay the perpetrator (typically via bitcoin) to unlock your files. The virus is a trojan horse that is commonly introduced through fake blogs that provide cracked software. Users download and install the software, which is actually the GandCrab V4 virus that scrambles, renames, and encrypts the user's files. The virus then generates a .TXT ransom note (KRAB-DECRYPT.txt) informing you of the takeover and what you need to do to recover your files.

There is no program currently available to effectively restore your files. If you backup your files you can execute a full system restore. Otherwise, the only known way to decrypt your infected files is to pay the perpetrator for the private key and decrypt program.

Common KRAB Filenames

filename.ext.KRAB - Encrypted files have the KRAB extension appended to the end of the file. For example, sample.xls becomes sample.xls.KRAB.

How to solve problems with KRAB files

  • Associate the KRAB file extension with the correct application. On :
    Windows: Right click on any KRAB file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.KRAB files". Mac: Right click (or Ctrl-click) the KRAB file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .KRAB is GandCrab V4 Ransomware Encrypted File. Because only the current version supports the latest KRAB file format. Search, therefore, e.g. on the N/A manufacturer website after an available .KRAB is GandCrab V4 Ransomware Encrypted File update.
  • To make sure that your KRAB file is not corrupted or virus-infected, get the file again and scan it with antivirus software.