KingOuroboros Ransomware
KingOuroboros is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick facts
Ransom note and payment demands
After encrypting files, KingOuroboros displays ransom notes demanding payment for file recovery:
notes/note.txt
notes/README!!! ALL YOUR FILES HAVE BEEN SECURELY ENCRYPTED!!!.txt
notes/CachedImage_1834_904_POS4.jpg
Technical indicators
Associated executable files
The following executable files are associated with KingOuroboros ransomware:
- Java Update Scheduler
- jusched.exe
- KingOuroboros.exe
- JAVA_UPDATER.EXE
- sa.exe
- dumped
About this analysis
This KingOuroboros 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 KingOuroboros.
Last updated: December 30, 2025
Elastio detects KingOuroboros inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify KingOuroboros 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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