Ransomware Research
NightSky Ransomware
NightSky is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2022, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Night Sky, NightSky Doxware.
Quick Facts
- Ransomware Family
- NightSky
- First Seen
- January 1, 2022
- Known Aliases
- Night SkyNightSky Doxware
How NightSky Ransomware Works
File Encryption Patterns
NightSky modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..nightskyRansom Note and Payment Demands
After encrypting files, NightSky displays ransom notes demanding payment for file recovery:
NightSkyReadMe.htaRansom message:
notes/NightSkyReadMe.hta
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with NightSky ransomware:
asgrfvNightSky.exe
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About This Analysis
This NightSky 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 NightSky.
Last updated: July 30, 2025