Ransomware Research
Losers-Dangerous Ransomware
Losers-Dangerous is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Losers-2.
Quick Facts
- Ransomware Family
- Losers-Dangerous
- First Seen
- December 1, 2017
- Known Aliases
- Losers-2
How Losers-Dangerous Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Losers-Dangerous modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..wtfRansom Note and Payment Demands
After encrypting files, Losers-Dangerous displays ransom notes demanding payment for file recovery:
HOWTODECRYPTFILES.htmlRansom message:
notes/HOWTODECRYPTFILES.html.txt
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About This Analysis
This Losers-Dangerous 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 Losers-Dangerous.
Last updated: July 30, 2025