Ransomware Research
CryptoExpertoo Ransomware
CryptoExpertoo is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CryptoExpertoo
- First Seen
- September 1, 2023
How CryptoExpertoo Ransomware Works
Targeted Files
NOSAMPLE Full extension -> .ID-<XXXXXXXXX>.{cryptoexpertoo@hotmail.com}.CRYPTED
File Encryption Patterns
CryptoExpertoo modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CRYPTEDRansom Note and Payment Demands
After encrypting files, CryptoExpertoo displays ransom notes demanding payment for file recovery:
readme_files encrypted.txtRansom message:
notes/readme_files encrypted.txt
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About This Analysis
This CryptoExpertoo 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 CryptoExpertoo.
Last updated: July 30, 2025