onyx
RansomwareAbout the group
Onyx is a ransomware group first observed in April 2022, based on the Chaos ransomware builder, that is notably destructive — files larger than 2MB are overwritten with random data rather than encrypted, making recovery impossible even after ransom payment — claiming approximately 13 victims across six countries.
Exploited vulnerabilities
No CVEs attributed to this group in public sources (MITRE ATT&CK). Absence of attribution does not mean absence of activity.
Impact and victims
The group onyx has 1 known ransomware victims. See the most affected sectors and countries and recent victims.
1known victims
1in Brazil
1sectors hit
Most attacked sectors
Retail & E-Commerce1
Most affected countries
🇧🇷 Brasil1
Recent victims
www.cucafresca.com.br
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