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Ransomware Research
DotNoData Ransomware
DotNoData is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- DotNoData
- First Seen
- April 1, 2019
How DotNoData Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
DotNoData modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
.._Crypted
Ransom Note and Payment Demands
After encrypting files, DotNoData displays ransom notes demanding payment for file recovery:
_CRYPTED_README.html
Ransom message:
notes/_CRYPTED_README.html
Elastio Can Help You
Don't let DotNoData ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This DotNoData 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 DotNoData.
Last updated: July 30, 2025