Apollo Office System Data Breach

On August 4, 2026, Apollo Office System, a company operating in Japan, was listed as a victim on the Orova ransomware group’s dark web portal. This listing was identified through SOCRadar’s Dark Web Monitoring service. As a Japanese entity, Apollo Office System stands out as an anomaly, as the batch of victims listed on the same date primarily comprised organizations from the United States, Hong Kong, and Taiwan. The specific sector for Apollo Office System was not confirmed in SOCRadar’s dataset, but its presence on the ransomware group’s leak site suggests a potential compromise. The Orova ransomware group’s activity preceding this listing showed a concentrated wave of attacks, with 23 other victims claimed in the 60 days prior, all appearing in the same August 4th batch. This indicates a recent surge in activity rather than a long-standing pattern. While Orova has shown a tendency to target the healthcare, manufacturing, and financial services sectors, a significant portion of their claimed victims lack clearly defined industry labels. The group’s primary victim base is concentrated in the United States, Hong Kong, and Taiwan. Notable organizations listed alongside Apollo include Global Friction Products, Inc., JK Capital Management Limited, Conceptual Designs, Inc., and Integrated Site Management, which share geographical or sector overlaps with the broader victim profile, making Apollo Office System a distinct outlier in this wave.

SOCRadar’s analysis of stealer-log telemetry for the domain “apollo-net[.]com” returned no records, indicating “no_exposure_in_sample.” However, this absence of evidence within the queried sample does not confirm that the organization is unaffected by a compromise. The investigation covered only a paginated and limited portion of a much larger dataset. Potential credential exposure could still exist under legacy domains, through regional subsidiaries, or via personal email aliases, which would not be captured by this specific query. Furthermore, Japanese organizations often operate with a co.jp domain in addition to a generic one, meaning a lookup against a single domain variant might not fully represent the extent of any exposure. Consequently, the domain remains under observation. The methods employed by ransomware groups like Orova often involve leveraging credentials harvested by infostealers as a primary means of initial access. Attackers or access brokers typically acquire these stolen credentials from underground marketplaces, validate their authenticity for corporate accounts, and then utilize them to gain entry into systems such as Microsoft 365, VPNs, or remote access portals. From there, they proceed with ransomware deployment. This particular query does not rule out such a scenario for Apollo Office System. Therefore, continued monitoring of the dark web and stealer logs, alongside proactive credential hygiene checks, is recommended.

This report is intended for threat intelligence and security awareness purposes. SOCRadar does not host, redistribute or buy stolen data. All breach information reported here is collected from publicly accessible threat actor and ransomware portals. This content is intended to equip CTI teams with context around recent attacks. While we strive for accuracy, listings on ransomware leak and extortion sites cannot always be independently verified and may not reflect confirmed breaches. If you believe any data in this report is incorrect, please contact us.