Files with krab file extension can be lately found as renamed encrypted archives affected by GandCrab ransomware.
KRAB file extension - GandCrab v4 ransomware affected data
What is krab file? How to open krab files?
File type specification:
The crab file extension is most recently related to a new ransomware labeled as GandCrab. Much like similar ransomware it encrypts users files and demands ransom to be paid in bitcoins.
It also leaves instructions and ransom demands in a special text file "KRAB-DECRYPT.txt" file found in affected folders.
