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Location: Desktop
Ransomware Research
Crimson Ransomware
Crimson is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2026, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- Crimson
- First Seen
- July 1, 2026
How Crimson ransomware works
File modification behavior
Crimson updates file modification timestamps after encryption.
File encryption patterns
Crimson modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .crimson
Ransom note and payment demands
After encrypting files, Crimson displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with Crimson ransomware:
- crimson.exe
About this analysis
This Crimson 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 Crimson.
Detection coverage
Elastio detects Crimson inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Crimson 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.