Ransomware Group: CEPHALUS

VICTIM NAME: SystemExec Co[.], Ltd[.]

NOTE: No files or stolen information are [exfiltrated/downloaded/taken/hosted/seen/reposted/disclosed] by RedPacket Security. Any legal issues relating to the content of the files should be directed at the attackers directly, not RedPacket Security. This blog is simply posting an editorial news post informing that a company has fallen victim to a ransomware attack. RedPacket Security is in no way affiliated or aligned with any ransomware threat actors or groups and will not host infringing content. The information on this page is fully automated and redacted whilst being scraped directly from the CEPHALUS Onion Dark Web Tor Blog page.

AI Generated Summary of the Ransomware Leak Page

SystemExec Co., Ltd. (Japanese: システムエグゼ) is identified as the victim on a ransomware leak page describing a GitLab naked repository leak, involving roughly 30 gigabytes of data exposed. The page frames the incident as a data leak rather than an encryption event. The post date shown on the page is 2025-08-26 14:43:39, indicating when the leak claim was published. The industry context is not disclosed in the record (Not Found).

The leak page indicates there is a claim URL present, suggesting attackers’ assertion of ownership over the exfiltrated content. There are no screenshots or other media shown on the page (images count is 0) and no downloadable items are listed. The body excerpt appears to be a placeholder message, rather than substantive content. A secondary timestamp in the page’s metadata shows 2025-08-26 17:01:13 UTC, which may reflect processing time rather than the original post time. The data volume is described as roughly 30 gigabytes (30G+).

The record preserves SystemExec Co., Ltd. as the victim’s name, but the industry remains unspecified. No ransom figure is disclosed on the page, and there is no visible content such as screenshots or downloadable files beyond the 30 GB data claim. The leak’s presentation—describing a GitLab repository leak with a substantial data exposure—fits the pattern commonly associated with data-leak events tied to ransomware operations.