Jaff Ransomware
Jaff is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick facts
How Jaff ransomware works
File encryption patterns
Jaff modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Jaff displays ransom notes demanding payment for file recovery:
notes/README_TO_DECRYPT.html
notes/README_TO_DECRYPTl.bmp
notes/README_TO_DECRYPTl.txt
notes/!!!!README_FOR_SAVE FILES.txt
notes/!!!!!SAVE YOUR FILES!!!!.txt
notes/!!!SAVE YOUR FILES!.bmp
notes/!!!SAVE YOUR FILES.bmp
notes/ReadMe.txt
notes/ReadMe.bmp
notes/ReadMe.html
notes/README TO SAVE YOUR FILES.bmp
notes/README TO SAVE YOUR FILES.html
notes/README TO SAVE YOUR FILES.txt
Technical indicators
Associated executable files
The following executable files are associated with Jaff ransomware:
- Rcfcngzxx
- NLI.exe
- Wanna Crypt 2.exe
- pitupi20.exe.3204.dr
- pitupi20.exe
- 04_pitupi20.exe
- MM_0.exe
- f87346b.exe
- dridex.exe
- pitupi20.exe.3476.dr
- 666.exe
- ÍøÒ×Æƽâ666.exe
- Rcfcngzxx.exe
- MM_2.exe
- pitupi20.exe_
- 924c84415.exe
- jaff.exe
- levinsky8.exe
About this analysis
This Jaff 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 Jaff.
Last updated: December 30, 2025
Elastio detects Jaff inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Jaff 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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