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Space Bears is a ransomware group observed targeting organizations in Japan in the first half of 2025. In the provided reporting, it is listed among active ransomware groups affecting Japanese organizations and was attributed with two confirmed incidents. The broader context indicates ransomware activity in Japan primarily affected small and medium-sized enterprises, with manufacturing the most targeted sector, but no specific intrusion methods, malware family details, technical capabilities, victimology beyond incident counts, associated threat actors, or indicators of compromise are provided specifically for Space Bears in the source content.
Mallory pivots from this family to the IOCs, detections, and named campaigns that touch your stack, and pages you when something new lands.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Low-volume ransomware brand referenced as part of the long-tail of operators.
Space Bears is a ransomware group responsible for at least two incidents in Japan in the first half of 2025.
Ransomware operation referenced as active against industrial sectors in Q2 2025 (no additional detail provided).
Match every observed IP, domain, and hash against your live telemetry.
Named campaigns wielding this family, with evidence pinned to each claim.
CVEs this family uses for access and lateral movement.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Every documented technique, ranked by evidence weight.
Reddit, Mastodon, and CTI community discussion around this family.