AstroTeam is an obscure ransomware group that first emerged in April 2021, operating with apparent financial motivations typical of cybercriminal ransomware operations. The group's origin and potential affiliations remain largely unknown due to limited public documentation and their minimal operational footprint observed by security researchers. Based on available intelligence, AstroTeam appears to target critical manufacturing sectors, with their documented activity focused primarily on victims within the United States, though their specific attack methodology, initial access vectors, and encryption techniques have not been extensively documented in public threat intelligence reports. The group's operational profile suggests a relatively small-scale operation, with only one publicly documented victim, indicating either highly selective targeting or limited operational capability compared to major ransomware-as-a-service groups. AstroTeam's current operational status remains unclear, with insufficient public reporting from major cybersecurity firms or law enforcement agencies to determine whether the group remains active, has ceased operations, or potentially rebranded under a different identity. The group has been linked to 1 public disclosures across our corpus. First observed on a leak site on April 5, 2021. The operation is currently inactive.
Sector and geography
This disclosure adds to ransomware activity in the Critical Manufacturing sector, which has 55 disclosures indexed across all operators we track. Geographically, Hoya Vision Care US/Optical Labs is reported in United States, a country with 7,392 ransomware disclosures in our corpus.
How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.
