Kawa4096
Since Jun 27, 2025, Kawa4096 has listed 17 organizations on its leak site.
Listings per month
- Total listings
- 17
- First listing
- Jun 27, 2025
- Latest listing
- Jul 29, 2025
- MITRE ATT&CK techniques
- 0
Kawa4096 is a ransomware group that emerged in June 2025, targeting multinational corporations across finance, education, and services sectors primarily in the US and Japan, using partial-encryption (25% of each file chunk) with Salsa20 and a leak site styled after Akira's retro terminal aesthetic, claiming at least 11 victims.
It posted no listings in the last 12 months.
Also known as: KaWaLocker
Most targeted country: United States, with 11 listings (65% of the total).
Most targeted sector: Healthcare, with 3 listings (18% of the total).
Targeted countries
Showing 10 of 17 results
What does a ransomware group do?
Ransomware groups break into corporate networks, move data out and encrypt systems. If the ransom is not paid, they list the organization on a leak site and threaten to publish the data.
What should you do if your organization is listed on a leak site?
- Record the listing and any published sample files; do not visit the leak site from the corporate network.
- Isolate affected systems and preserve logs without deleting them.
- Determine which data left the organization; if personal data is involved, review notification obligations with your legal team.
- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
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