Ransomware Research
2023 Ransomware
2023 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- 2023
- First Seen
- October 1, 2023
How 2023 Ransomware Works
Targeted Files
Full extension -> .id-C63F241F.[servicehelp@onionmail.org].2023
File Encryption Patterns
2023 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..2023Ransom Note and Payment Demands
After encrypting files, 2023 displays ransom notes demanding payment for file recovery:
README!.txtRansom message:
notes/README!.txt
Note locations:
RootDiscsDesktopInfo.htaRansom message:
notes/Info.hta
Note locations:
StartUpRoamingTechnical Indicators
Associated Executable Files
The following executable files are associated with 2023 ransomware:
sys.exe
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About This Analysis
This 2023 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 2023.
Last updated: July 30, 2025