Ransomware Research
Dev Ransomware
Dev 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
- Dev
- First Seen
- July 1, 2025
How Dev Ransomware Works
Targeted Files
Full extension -> .[7E40E7FB].[decryptdevelop@outlook.com].dev
File Encryption Patterns
Dev modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..dev
Ransom Note and Payment Demands
After encrypting files, Dev displays ransom notes demanding payment for file recovery:
+README-WARNING+.txt
Ransom message:
notes/+README-WARNING+.txt
Note locations:
EveryFolder
Ransom message:
notes/F78.tmp.png
Note locations:
Desktop
Technical Indicators
Associated Executable Files
The following executable files are associated with Dev ransomware:
cc.exe
Elastio Can Help You
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About This Analysis
This Dev 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 Dev.
Last updated: September 30, 2025
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