Ransomware Research
Pump Ransomware
Pump is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Pump
- First Seen
- December 1, 2020
How Pump Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Pump modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..pump..hubRansom Note and Payment Demands
After encrypting files, Pump displays ransom notes demanding payment for file recovery:
README.txtRansom message:
notes/README.txt
CONTACT.txtRansom message:
notes/CONTACT.txt
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About This Analysis
This Pump 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 Pump.
Last updated: July 30, 2025