Ransomware Group: CICADA3301

VICTIM NAME: Mack Energy Corp

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 CICADA3301 Onion Dark Web Tor Blog page.

AI Generated Summary of the Ransomware Leak Page

The ransomware leak pertains to Mack Energy Corp, an entity operating within the energy sector in the United States. The breach was discovered on July 9, 2025, and involved the unauthorized release of a substantial amount of data estimated at approximately 3.1 terabytes. The leak was publicly disclosed through a dark web platform associated with the group known as cicada3301, which is known for orchestrating targeted cyberattacks. The compromised data appears to include sensitive information that has been made available via a dedicated claim URL on the dark web, indicating an ongoing data exfiltration or ransom negotiation process. The leak has been active for over 19 days, signifying a significant security incident with potential operational and strategic impacts for the victim organization.

During the incident, several infostealer tools such as Raccoon and RedLine were identified as part of the attack infrastructure. These tools are typically used to collect user credentials and exfiltrate critical information from compromised systems. The attack involved approximately 40 third-party entities and at least three individual users associated with the actors responsible for the breach. Although visual evidence or screenshots are not provided, the details suggest a serious data compromise that could include internal documents, operational details, or proprietary information. The breach underscores the ongoing threat posed by well-organized cybercrime groups targeting critical infrastructure sectors like energy, emphasizing the need for robust cybersecurity measures to prevent similar incidents in the future.