filereadme.txt
notes/readme.txt
Location: EveryFolder
Ransomware Research
ONYX Ransomware
ONYX is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2022, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Chaos-ONYX, ONYX Doxware.
Quick facts
- Ransomware Family
- ONYX
- First Seen
- April 1, 2022
- Known Aliases
- Chaos-ONYX
- ONYX Doxware
How ONYX ransomware works
File modification behavior
ONYX updates file modification timestamps after encryption.
File encryption patterns
ONYX modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .ampkcz
Ransom note and payment demands
After encrypting files, ONYX displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with ONYX ransomware:
- svchost.exe
- amp.exe
- amp.old.exe
About this analysis
This ONYX 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 ONYX.
Detection coverage
Elastio detects ONYX inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify ONYX across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.