Ransomware Research
Creeper Ransomware
Creeper is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Cripper.
Quick Facts
- Ransomware Family
- Creeper
- First Seen
- February 1, 2018
- Known Aliases
- Cripper
How Creeper Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Creeper modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..cripper..crypton..cripton..rag2hdstRansom Note and Payment Demands
After encrypting files, Creeper displays ransom notes demanding payment for file recovery:
DECRIPT_MY_FILES.txtRansom message:
notes/DECRIPT_MY_FILES.txt
DECRIPT_FILES.txtRansom message:
notes/DECRIPT_FILES.txt
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About This Analysis
This Creeper 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 Creeper.
Last updated: July 30, 2025