KEYHolder Ransomware
KEYHolder is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2014, this ransomware has been actively targeting systems worldwide.
Quick facts
Ransom note and payment demands
After encrypting files, KEYHolder displays ransom notes demanding payment for file recovery:
notes/HOW_DECRYPT.html.txt
About this analysis
This KEYHolder 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 KEYHolder.
Last updated: December 30, 2025
Elastio detects KEYHolder inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify KEYHolder 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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