Ransomware Research
Ragnarok Ransomware
Ragnarok is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: RagnarokCry, Ragnarok Doxware.
Quick Facts
- Ransomware Family
- Ragnarok
- First Seen
- January 1, 2020
- Known Aliases
- RagnarokCryRagnarok Doxware
How Ragnarok Ransomware Works
File Encryption Patterns
Ragnarok modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..ragnarok..rgnk..thor..hela..ragnarok_cry..odinRansom Note and Payment Demands
After encrypting files, Ragnarok displays ransom notes demanding payment for file recovery:
How_To_Decrypt_My_Files.txtRansom message:
notes/How_To_Decrypt_My_Files.txt
Note locations:
EveryFolder!!ReadMe_To_Decrypt_My_Files.txtRansom message:
notes/!!ReadMe_To_Decrypt_My_Files.txt
!!Attention_How_To_Recover_My_Files.txtRansom message:
notes/!!Attention_How_To_Recover_My_Files.txt
Note locations:
EveryFolder!!Read_me_How_To_Recover_My_Files.html/^!!Read_Me\.[A-F0-9]{5}\.html$/Ransom message:
notes/!!Read_Me.FC30D.html
Note locations:
RootDirectoryUserFoldersTechnical Indicators
Associated Executable Files
The following executable files are associated with Ragnarok ransomware:
asdjasfhdlkfadfhds.exe1patch64rgnk3.0.exe730DBBFB.exe
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About This Analysis
This Ragnarok 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 Ragnarok.
Last updated: July 30, 2025