Ransomware Research
HiddenTear Ransomware
HiddenTear is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- HiddenTear
- First Seen
- July 1, 2016
How HiddenTear Ransomware Works
Targeted Files
14c49b0e956ac8ae253cd97133f61f41bbee5d9c3c90bd9248d79f2ba9da4fb6 -> .{fasfry2323@naver.com}.RansomLocker
File Encryption Patterns
HiddenTear modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..locked..monstro..blacklistcp..fucked..Encrypted..RansomLocker..fasfry2323@naver.comRansom Note and Payment Demands
After encrypting files, HiddenTear displays ransom notes demanding payment for file recovery:
READ_ME.txtRansom message:
notes/READ_ME.txt
Note locations:
DesktopNotice.txtRansom message:
notes/Notice.txt
Note locations:
DesktopSORRY_Прости.txtRansom message:
notes/SORRY_Прости.txt
Note locations:
DesktopWarning!!!!!!.txtRansom message:
notes/Warning!!!!!!.txt
Note locations:
DesktopReadMe.txtRansom message:
notes/ReadMe.txt
Note locations:
DesktopRansom message:
notes/note.txt
Note locations:
OnceOnCompletionTechnical Indicators
Associated Executable Files
The following executable files are associated with HiddenTear ransomware:
Battlefiled.exeblacklistcp.exeSAT_d.exe
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About This Analysis
This HiddenTear 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 HiddenTear.
Last updated: July 30, 2025