file!HOW_TO_RECOVER.html
notes/!HOW_TO_RECOVER.html
Location: EveryFolder, EveryFile
Ransomware Research
Coffin Fleet Ransomware
Coffin Fleet is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2026, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- Coffin Fleet
- First Seen
- June 1, 2026
How Coffin Fleet ransomware works
File modification behavior
Coffin Fleet updates file modification timestamps after encryption.
File encryption patterns
Coffin Fleet modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .fleet
Prefixes added to encrypted files
- Coffin_
Ransom note and payment demands
After encrypting files, Coffin Fleet displays ransom notes demanding payment for file recovery:
file{origin_filename}
notes/telemetry-dll-ramp-value.txt
screenshot
notes/coffin_fleet_wp.jpg
Location: Desktop
Technical indicators
Associated executable files
The following executable files are associated with Coffin Fleet ransomware:
- 54.exe
About this analysis
This Coffin Fleet ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Coffin Fleet.
Detection coverage
Elastio detects Coffin Fleet inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Coffin Fleet across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.