Ransomware Research
KEEPCALM Ransomware
KEEPCALM is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- KEEPCALM
- First Seen
- February 1, 2023
How KEEPCALM Ransomware Works
Targeted Files
Full extension -> -+Id(802321D0) mail(josealen@tutanota.com).KEEPCALM
File Encryption Patterns
KEEPCALM modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..KEEPCALMRansom Note and Payment Demands
After encrypting files, KEEPCALM displays ransom notes demanding payment for file recovery:
ReadMe.txtRansom message:
notes/ReadMe.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with KEEPCALM ransomware:
38.zip38.ex37.exe38.exeSDV.exe
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About This Analysis
This KEEPCALM 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 KEEPCALM.
Last updated: July 30, 2025