Obscura
Since Sep 5, 2025, Obscura has listed 33 organizations on its leak site.
Listings per month
- Total listings
- 33
- First listing
- Sep 5, 2025
- Latest listing
- Jan 11, 2026
- MITRE ATT&CK techniques
- 0
Obscura is a ransomware strain observed in 2025, written in Go and specifically targeting Windows domain controllers via the SYSVOL/NETLOGON share, using Curve25519 + XChaCha20 encryption with double-extortion tactics and a 10-day payment deadline.
It posted 12 listings in the last 12 months; the busiest month was December 2025 (6 listings).
Most targeted country: United States, with 6 listings (18% of the total).
Most targeted sector: Professional Services, with 7 listings (21% of the total).
Targeted countries
Showing 10 of 33 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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Customer intelligence on top of Infostealer Detection: leaked accounts of end users who sign in to your site.