Ransomware Research
Atomic Ransomware
Atomic is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Atomic
- First Seen
- July 1, 2025
How Atomic Ransomware Works
File Encryption Patterns
Atomic modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..atomicRansom Note and Payment Demands
After encrypting files, Atomic displays ransom notes demanding payment for file recovery:
+README-WARNING+.txtRansom message:
notes/+README-WARNING+.txt
Note locations:
EveryFolderRansom message:
notes/9F01.tmp.png
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Atomic ransomware:
t6j0g.exelsess.exe
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About This Analysis
This Atomic 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 Atomic.
Last updated: September 30, 2025
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