Ransomware Research
GandCrab Ransomware
GandCrab is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: GDCB.
Quick Facts
- Ransomware Family
- GandCrab
- First Seen
- January 1, 2018
- Known Aliases
- GDCB
How GandCrab Ransomware Works
Targeted Files
Requires C&C for key exchange (can be launched with FakeNetNG)
File Encryption Patterns
GandCrab modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..GDCBRansom Note and Payment Demands
After encrypting files, GandCrab displays ransom notes demanding payment for file recovery:
GDCB-DECRYPT.txtRansom message:
notes/GDCB-DECRYPT.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with GandCrab ransomware:
dfpund.exeakpjpi.exefiaigk.exe4.binmyfile.exe4.exeGandCrab.exemalware.execuleio.exegrandcrab.exefokgto.exe3e2e881ec.exeGandCrab (2).exeFont_update.exeegahfghjfghj.exestub.exeRansom.GandCrabbase64.bin2018-02-23.15:00:01nslookup.exe
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About This Analysis
This GandCrab ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like GandCrab.
Last updated: July 30, 2025