Pay2Key Ransomware
Pay2Key is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick facts
How Pay2Key ransomware works
File encryption patterns
Pay2Key modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Pay2Key displays ransom notes demanding payment for file recovery:
notes/_MESSAGE.TXT
Technical indicators
Associated executable files
The following executable files are associated with Pay2Key ransomware:
- pass2key.exe
- Cobalt.Client.exe
- Cobalt.Client.ekze
About this analysis
This Pay2Key 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 Pay2Key.
Last updated: December 30, 2025
Elastio detects Pay2Key inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Pay2Key across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.
Recent ransomware
Explore other threats in our database