Rokku Ransomware
Rokku is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick facts
How Rokku ransomware works
File encryption patterns
Rokku modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Rokku displays ransom notes demanding payment for file recovery:
notes/README_HOW_TO_UNLOCK.TXT
notes/README_HOW_TO_UNLOCK.HTML
Technical indicators
Associated executable files
The following executable files are associated with Rokku ransomware:
- Rokku
- Rokku.exe
- rokku1.exe.dontrun
- ruko1
- rokku.exe
- phpZiiD6l
- rokku_unpacked.exe
- bg.jpg_unpacked.bin
About this analysis
This Rokku 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 Rokku.
Last updated: December 30, 2025
Elastio detects Rokku inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Rokku 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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