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
File Encryption Patterns
DotNoData modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
.._CryptedRansom Note and Payment Demands
After encrypting files, DotNoData displays ransom notes demanding payment for file recovery:
_CRYPTED_README.htmlRansom message:
notes/_CRYPTED_README.html
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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: October 30, 2025
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