Ransomware Research
CryWiper Ransomware
CryWiper is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2022, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: BrowserUpdate.
Quick Facts
- Ransomware Family
- CryWiper
- First Seen
- December 1, 2022
- Known Aliases
- BrowserUpdate
How CryWiper Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
CryWiper modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CRYRansom Note and Payment Demands
After encrypting files, CryWiper displays ransom notes demanding payment for file recovery:
README.txtRansom message:
notes/README.txt
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About This Analysis
This CryWiper 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 CryWiper.
Last updated: July 30, 2025