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Ransomware Research
RagnarLocker Ransomware
RagnarLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: RagnarLocker 2.0, RagnarLocker Doxware, RagnarLocker NextGen.
Quick Facts
- Ransomware Family
- RagnarLocker
- First Seen
- February 1, 2020
- Known Aliases
- RagnarLocker 2.0RagnarLocker DoxwareRagnarLocker NextGen
How RagnarLocker Ransomware Works
Targeted Files
Encrypts first 1Mb
File Encryption Patterns
RagnarLocker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.ragnar_[A-F0-9]{8}$/
./\.__r4gN4r__[A-F0-9]{8}$/
Ransom Note and Payment Demands
After encrypting files, RagnarLocker displays ransom notes demanding payment for file recovery:
/^RGNR_[A-F0-9]{8}\.txt$/
Ransom message:
notes/RGNR_B9355F59.txt
Note locations:
EveryFolder
/^!!!_READ_ME_[A-F0-9]{8}_!!!\.txt$/
Ransom message:
notes/!!!_READ_ME_623A4A83_!!!.txt
Note locations:
EveryFolder
Technical Indicators
Associated Executable Files
The following executable files are associated with RagnarLocker ransomware:
uu94ctvp4f6TPpgoPS.exe
o0j5mWgpcow7k2uQj05egTmZsPm.exe
delq99j61FkgZTWpMioun7.exe
VSERV.EXE
malware.exe
ransom1.eexe
Ezb6GQGXGXYUaFY.exe
Ragnar.exe
true.bin
9yeblsbyyEUb7wRn1.exe
FRSQK5LCWFef60L.exe
VSD.EXE
001200000005379C_winscp.exe_sample.exe
Sofreg.exe
CWT_company_ragnar_locker.exe
ragnar.exe
ragnarlocker.exe
sasas.bin.exe
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About This Analysis
This RagnarLocker 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 RagnarLocker.
Last updated: July 30, 2025