BlackLock
Since May 16, 2025, BlackLock has listed 64 organizations on its leak site.
Listings per month
- Total listings
- 64
- First listing
- May 16, 2025
- Latest listing
- Jul 2, 2025
- MITRE ATT&CK techniques
- 0
BlackLock is a rebranded version of another ransomware group known as Eldorado. It has since become one of the most active extortion syndicates in 2025, heavily targeting technology, manufacturing, construction, finance, and retail sectors.
It posted no listings in the last 12 months.
Also known as: El Dorado, BlackLocks, Eldorado, Mamona, GLOBAL GROUP
Most targeted country: United States, with 38 listings (59% of the total).
Most targeted sector: Manufacturing, with 14 listings (22% of the total).
Targeted countries
Showing 10 of 64 results
Published reports on this actor:
- https://asec.ahnlab.com/en/90175/
- https://reliaquest.com/blog/threat-spotlight-inside-the-worlds-fastest-rising-ransomware-operator-blacklock/
- https://www.resecurity.com/blog/article/blacklock-ransomware-a-late-holiday-gift-with-intrusion-into-the-threat-actors-infrastructure
Source: MISP Galaxy, Malpedia.
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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