Ransomware Update – 2025-08-23

[Content by Gemini 2.5]

Latest Ransomware News and New File Extensions

  • Warlock Ransomware:

    • New Encrypted File Extension: Not specified.
    • Attack Methods: Data exfiltration followed by public auction of stolen files to extort the victim.
    • Targets: Telecommunications companies, specifically Colt Technology Services.
    • Decryption Status: No known decryption method mentioned; the focus is on preventing the leak of stolen customer documentation.
    • Source: https://www.bleepingcomputer.com/news/security/colt-confirms-customer-data-stolen-as-warlock-ransomware-auctions-files/
  • DaVita Data Breach (Ransomware):

    • New Encrypted File Extension: Not specified.
    • Attack Methods: Network breach resulting in the theft of personal and health information. The specific ransomware gang was not named.
    • Targets: Healthcare sector, specifically DaVita, a U.S. kidney dialysis firm. The breach affected nearly 2.7 million individuals.
    • Decryption Status: No information on decryption; the primary impact reported is a massive data breach.
    • Source: https://www.bleepingcomputer.com/news/security/davita-says-ransomware-gang-stole-data-of-nearly-27-million-people/
  • Multiple Ransomware Gangs (Akira, Dragonforce, Qilin, Incransom, etc.):

    • New Encrypted File Extension: Not specified in the reports.
    • Attack Methods: Data theft and extortion through public naming and shaming on dedicated leak sites.
    • Targets: A wide range of global organizations across various sectors, including law firms (Hill Peterson Carper Bee & Deitzler), construction (Hogan Construction Group), engineering (Carmichael Engineering, GEA Consulting Engineers), manufacturing (Exotherm), healthcare (Quadrangle Imaging Center, Huron Regional Medical Center), and professional services.
    • Decryption Status: Not applicable, as these reports focus on the data leak and extortion phase of the attacks.
    • Source: Multiple ransomware leak site notifications.

Observations and Further Recommendations

  • Ransomware operations continue to rely heavily on a double-extortion model, prioritizing data exfiltration and the threat of public leaks over just encryption. The high volume of victims posted by groups like Akira and Dragonforce suggests ongoing, widespread campaigns.
  • Critical sectors such as healthcare and telecommunications remain prime targets, leading to significant data breaches that affect millions of individuals, as seen in the DaVita incident.
  • Organizations should focus on proactive defense: implement multi-factor authentication (MFA), maintain a robust and tested backup and recovery plan, conduct regular employee security training to prevent phishing, and ensure timely patching of all systems and software.

News Details

  • DaVita says ransomware gang stole data of nearly 2.7 million people: Kidney dialysis firm DaVita has confirmed that a ransomware gang that breached its network stole the personal and health information of nearly 2.7 million individuals.
  • Colt confirms customer data stolen as Warlock ransomware auctions files: UK-based telecommunications company Colt Technology Services confirms that customer documentation was stolen as Warlock ransomware gang auctions files.
  • Chinese Hackers Murky, Genesis, and Glacial Panda Escalate Cloud and Telecom Espionage: Cybersecurity researchers are calling attention to malicious activity orchestrated by a China-nexus cyber espionage group known as Murky Panda that involves abusing trusted relationships in the cloud to breach enterprise networks.
  • INTERPOL Arrests 1,209 Cybercriminals Across 18 African Nations in Global Crackdown: INTERPOL on Friday announced that authorities from 18 countries across Africa have arrested 1,209 cybercriminals who targeted 88,000 victims. The crackdown recovered $97.4 million and dismantled 11,432 malicious infrastructures.
  • 🏴‍☠️ Akira has just published a new victim : Hogan Construction Group: Hogan Construction Group is a company that provides a comprehensive platform of value-based, client-focused construction management services. It offers interior renovations, design and bid-Build, historic restorations, and adaptive re-use. We are ready to upload more than 16GB files of essential corporate documents.
  • 🏴‍☠️ Dragonforce has just published a new victim : George Haney & Son: George Haney & Son Inc is a family-owned HVAC contractor based in Pasadena, CA, providing services to the San Fernando and San Gabriel Valleys. With a strong reputation since 1927, they specialize in the installation, maintenance, and repair of various HVAC systems.
  • 🏴‍☠️ Qilin has just published a new victim : www.wyongleagues.com.au: Wyong Rugby League Club, Australia is a network of 12 organizations, each offering entertainment, recreational and dining opportunities and promoting membership of their club. It is the membership card that opens up a full range of entertainment.