CryptoJoker Ransomware
CryptoJoker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2015, this ransomware has been actively targeting systems worldwide.
Quick facts
How CryptoJoker ransomware works
File encryption patterns
CryptoJoker modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, CryptoJoker displays ransom notes demanding payment for file recovery:
notes/DECRYPT FILES.txt
notes/GET MY FILES.txt
notes/READ.txt
notes/readme.txt
notes/README!!!.txt
notes/READ NOW.txt
notes/READ NOW.txt
notes/read this file.txt
notes/ПРОЧТИ.txt
notes/РАСШИФРОВАТЬ ФАЙЛЫ.txt
notes/note.txt
Technical indicators
Associated executable files
The following executable files are associated with CryptoJoker ransomware:
- Trojan-Ransom.Win32.Crypmodadv.wow-ba4e7b8df8d78a961b30e890c8721fe78c730c0f2c2a85c858369cd3a55f0f13
- QuicklyLive.exe
- Quickly Live.exe
- 5627scan.scr
- CryptoJoker.scr
- cryptjoker.exe
- CryptoJocker.scr
About this analysis
This CryptoJoker 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 CryptoJoker.
Last updated: December 30, 2025
Elastio detects CryptoJoker inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify CryptoJoker 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.
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