Ransomware Research
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
- Ransomware Family
- Rokku
- First Seen
- March 1, 2016
How Rokku Ransomware Works
File Encryption Patterns
Rokku modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..rokku
Ransom Note and Payment Demands
After encrypting files, Rokku displays ransom notes demanding payment for file recovery:
README_HOW_TO_UNLOCK.TXT
Ransom message:
notes/README_HOW_TO_UNLOCK.TXT
Note locations:
EveryFolder
README_HOW_TO_UNLOCK.HTML
Ransom message:
notes/README_HOW_TO_UNLOCK.HTML
Note locations:
EveryFolder
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
Elastio Can Help You
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About This Analysis
This Rokku ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like Rokku.
Last updated: July 30, 2025