Ransomware Research
Serpent Danish Ransomware
Serpent Danish is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Serpent 2017.
Quick Facts
- Ransomware Family
- Serpent Danish
- First Seen
- February 1, 2017
- Known Aliases
- Serpent 2017
How Serpent Danish Ransomware Works
File Encryption Patterns
Serpent Danish modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..serpent..serpRansom Note and Payment Demands
After encrypting files, Serpent Danish displays ransom notes demanding payment for file recovery:
README_TO_RESTORE_FILES.txt/HOW_TO_DECRYPT_YOUR_FILES_[A-Za-z0-9]{3}.txt/Ransom message:
notes/HOW_TO_DECRYPT_YOUR_FILES_Hg5.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with Serpent Danish ransomware:
software.exeiutyfghjkoiuytf.exesoftware.binSperment ransomware.binSperment Ransomware.exeSperment ransomware.exeputtyx86.exe286d.exe1286d.exeser.exe
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About This Analysis
This Serpent Danish 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 Serpent Danish.
Last updated: July 30, 2025