The Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), and the Multi-State Information Sharing and Analysis Center (MS-ISAC) are releasing this joint advisory to disseminate known Ghost (Cring)— (“Ghost”)—ransomware IOCs and TTPs identified through FBI investigation as recently as January 2025. Beginning early 2021, Ghost actors began attacking victims whose internet facing services ran outdated versions of software and firmware.
This indiscriminate targeting of networks containing vulnerabilities has led to the compromise of organizations across more than 70 countries, including organizations in China. Ghost actors, located in China, conduct these widespread attacks for financial gain. Affected victims include critical infrastructure, schools and universities, healthcare, government networks, religious institutions, technology and manufacturing companies, and numerous small- and medium-sized businesses.
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Source: U.S. Federal Bureau of Investigation Cyber Division
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