The Interlock ransomware is a newly observed malware strain that has adopted a novel delivery technique known as the FileFix method. While specific technical details about the FileFix method are limited in the provided information, it can be inferred that this method represents a new or modified approach to delivering ransomware payloads, potentially bypassing traditional detection mechanisms. Ransomware like Interlock typically encrypts victims' files and demands payment for decryption keys, causing significant operational disruption. The adoption of innovative delivery methods such as FileFix suggests an evolution in ransomware tactics aimed at increasing infection rates and evading security controls. Although there are no known exploits in the wild reported yet, the high severity rating indicates that the threat is considered significant by the security community. The source of this information is a trusted cybersecurity news outlet, BleepingComputer, and the initial discussion appeared on the InfoSecNews subreddit, indicating early-stage awareness among security professionals. The lack of affected versions or patch information suggests that this ransomware targets general systems rather than exploiting a specific software vulnerability. The minimal discussion level and low Reddit score imply that the threat is emerging and may not yet be widespread. However, the presence of ransomware with new delivery techniques warrants proactive attention from organizations.

For European organizations, the Interlock ransomware poses a high risk due to the potential for widespread file encryption and operational disruption. Ransomware attacks can lead to significant financial losses, data breaches, and reputational damage. Critical sectors such as healthcare, finance, manufacturing, and public services in Europe could be severely impacted, especially if the ransomware leverages the FileFix method to evade existing defenses. The disruption of services and potential data loss could also have cascading effects on supply chains and critical infrastructure. Given Europe's stringent data protection regulations like GDPR, organizations may face additional legal and compliance consequences if sensitive data is compromised or unavailable. The high severity rating underscores the urgency for European entities to monitor this threat closely and implement targeted defenses to mitigate infection risks.

To specifically mitigate the threat posed by Interlock ransomware using the FileFix delivery method, European organizations should: 1) Enhance endpoint detection and response (EDR) capabilities to identify anomalous file operations and suspicious behaviors associated with new delivery techniques. 2) Implement advanced email and web filtering solutions to block phishing attempts or malicious payloads that may use the FileFix method. 3) Conduct regular backups with offline or immutable storage to ensure data recovery without paying ransom. 4) Employ network segmentation to limit lateral movement if an infection occurs. 5) Maintain up-to-date threat intelligence feeds and collaborate with cybersecurity communities to stay informed about emerging ransomware tactics like FileFix. 6) Train employees on recognizing social engineering and phishing attempts that could be vectors for ransomware delivery. 7) Use application whitelisting and restrict execution of unauthorized scripts or binaries that could be part of the FileFix delivery chain. 8) Perform regular security audits and penetration testing focused on ransomware resilience. These measures go beyond generic advice by emphasizing detection of novel delivery methods, proactive threat intelligence integration, and organizational preparedness specific to ransomware evolution.