CISA and Partners Release Cybersecurity Advisory on Medusa Ransomware

CISA and Partners Release Cybersecurity Advisory on Medusa Ransomware

https://www.cisa.gov/cybersecurity-advisories/alerts.xml / Wed, 03/12/2025 - 19:30

Today, CISA—in partnership with the Federal Bureau of Investigation (FBI) and Multi-State Information Sharing and Analysis Center (MS-ISAC)—released joint Cybersecurity Advisory, #StopRansomware: Medusa Ransomware. This advisory provides tactics, techniques, and procedures (TTPs), indicators of compromise (IOCs), and detection methods associated with known Medusa ransomware activity.

Medusa is a ransomware-as-a-service variant used to conduct ransomware attacks; as of December 2024, over 300 victims from critical infrastructure sectors have been impacted. Medusa actors use common techniques like phishing campaigns and exploiting unpatched software vulnerabilities.

Immediate actions organizations can take to mitigate Medusa ransomware activity: 

  • Ensure operating systems, software, and firmware are patched and up to date.
  • Segment networks to restrict lateral movement.
  • Filter network traffic by preventing unknown or untrusted origins from accessing remote services.

CISA encourages network defenders to review the advisory and implement the recommended mitigations to reduce the likelihood and impact of Medusa ransomware incidents. See #StopRansomware and the #StopRansomware Guide for additional guidance on ransomware protection, detection, and response.

About

Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.