Ransomware Research
SintaLocker Ransomware
SintaLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- SintaLocker
- First Seen
- May 1, 2017
How SintaLocker Ransomware Works
Targeted Files
Written in Python (PyInstaller) Requires C&C
File Encryption Patterns
SintaLocker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..sintaRansom Note and Payment Demands
After encrypting files, SintaLocker displays ransom notes demanding payment for file recovery:
README_FOR_DECRYPT.txtRansom message:
notes/README_FOR_DECRYPT.txt
Note locations:
UserFoldersRootDiscsREADME_FOR_DECRYPT.mdRansom message:
notes/README_FOR_DECRYPT.md
Technical Indicators
Associated Executable Files
The following executable files are associated with SintaLocker ransomware:
Win32.Trojan-Ransom.CryPy.C.exeSintaLocker.exetrojan.generickd.5222586.exeRansomware 18.exe
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About This Analysis
This SintaLocker 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 SintaLocker.
Last updated: July 30, 2025