Ransomware Research
CryptoDefense Ransomware
CryptoDefense is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2014, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CryptoDefense
- First Seen
- March 1, 2014
How CryptoDefense Ransomware Works
Targeted Files
NOSAMPLE https://www.bleepingcomputer.com/virus-removal/cryptodefense-ransomware-information#gethelp https://community.broadcom.com/symantecenterprise/communities/community-home/librarydocuments/viewdocument?DocumentKey=07e1491a-4f16-4529-8973-926b23947ed8&CommunityKey=1ecf5f55-9545-44d6-b0f4-4e4a7f5f5e68&tab=librarydocuments
Ransom Note and Payment Demands
After encrypting files, CryptoDefense displays ransom notes demanding payment for file recovery:
HOW_DECRYPT.TXTRansom message:
notes/HOW_DECRYPT.TXT
HOW_DECRYPT.HTMLHOW_DECRYPT.URLRecovery and Decryption Tools
Good news! Decryption tools are available for CryptoDefense ransomware:
0
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About This Analysis
This CryptoDefense 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 CryptoDefense.
Last updated: July 30, 2025