The outbreak of COVID-19 has put cyberattacks on healthcare providers into hyperdrive. Factors contributing to such attacks include, but aren’t limited to:
Ryuk ransomware, in particular, has seen a resurgence recently. Sophos recently identified a new spam campaign linked to the Ryuk actors, and our Managed Threat Response team assisted an organization in mitigating a Ryuk attack, providing insight into how the Ryuk actors’ tools, techniques, and practices have evolved.
The investigation showed an evolution of the tools used to compromise targeted networks and deploy the ransomware. But what was more notable was how quickly the cyber attacks can move from initial compromise to ransomware deployment. Within three and a half hours of a target opening a phishing email attachment, attackers were already conducting network reconnaissance. Within a day, they had gained access to a domain controller and were in the early stages of an attempt to deploy ransomware.
The evasion techniques of ransomware are rapidly changing. In recent years, ransomware attacks have trended away from brute-force, large-scale attacks to focused, planned, and manually executed attacks that are much harder to detect and block. Humans are handcrafting artisanal malware.
The criminals have hybridized their attacks, combining automation to find victims with gaps in their defenses. Exposed servers with Remote Desktop Protocol (RDP) enabled, administrators without multi-factor authentication for remote access, unpatched web servers, or even these same issues at a trusted partner or service provider are enough to put your network, systems, and resources under ransom.
Here are the five things healthcare providers can do to protect against ransomware cyber attacks:
Sophos Intercept X Advanced with EDR includes all the features you need to help protect your organization from ransomware attacks like Ryuk, Sodinokibi, Maze, and Ragnar Locker.
Intercept X includes anti-ransomware technology that detects malicious encryption processes and shuts them down before they can spread across your network. Anti-exploit technology stops the delivery and installation of ransomware, deep learning blocks ransomware before it can run, and CryptoGuard prevents the malicious encryption of files, rolling them back to their safe states.
Furthermore, Sophos EDR helps keep your threat hunting and IT operations hygiene running smoothly across your entire estate. Sophos EDR empowers your team to ask detailed questions to identify advanced threats, active adversaries, and potential IT vulnerabilities, and then quickly take appropriate action to stop them. It enables you to detect adversaries lurking in your network and waiting to deploy ransomware that may have gone unnoticed.
The Sophos MTR service adds human expertise to your layered security strategy. An elite team of threat hunters proactively looks for and validates potential threats on your behalf. If authorized, they take action to disrupt, contain, and neutralize threats, and provide actionable advice to address the root causes of recurring incidents.
If your organization is under attack and needs immediate incident response assistance, Sophos can help.
Delivered by an expert team of incident responders, Sophos Rapid Response provides lightning-fast assistance with identification and neutralization of active threats against organizations. On-boarding starts within hours, and most customers are triaged within 48 hours. The service is available for both existing Sophos customers as well as non-Sophos customers.
The Sophos Rapid Response team of remote incident responders quickly takes action to triage, contain, and neutralize active threats. Adversaries are ejected from your estate to prevent further damage to your assets.
AKAVEIL Technologies has decades of experience, skills, and knowledge in the evolution of cybersecurity practices and standards. In addition, we have carefully chosen SOPHOS as a security partner. SOPHOS provides ongoing research and knowledge in the cybersecurity arena which ensures their products are up to the most current specifications for your protection. We understand security posturing for optimal protection, detection, and recovery.
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