Underground Ransomware

Underground is a ransomware threat group that has disclosed 26 victims in publicly accessible leak site data, representing 0.1% of all ransomware attacks tracked in this database. The earliest victim disclosure attributed to Underground in our dataset dates to May 2024.

Geographically, Underground has targeted organisations in 11 countries. The most frequently targeted nation is United States with 9 victim organisations. Other heavily targeted nations include Canada, South Korea, Germany.

Industry-wise, Underground shows a concentration in the Technology, Manufacturing, Healthcare sectors. These industries are frequently targeted because they manage sensitive data, critical operations, or have lower tolerance for operational downtime — conditions that increase ransom payment likelihood.

Like most modern ransomware operations, Underground likely employs a double extortion model: encrypting victim files while simultaneously exfiltrating data, creating dual pressure to pay the ransom. Victim organisations that refuse payment face having their data published on the group's dark web leak site.

Note: This profile is generated from public leak site disclosures aggregated via the ransomware.live API. Data is updated automatically. The table below lists the 26 most recent of the 26 disclosures we hold for this group; use the link beneath it to page through all of them.