Ransomware on S3 Buckets?!

Summary: The video discusses a ransomware technique targeting Amazon S3 buckets, illustrating how attackers can gain access to sensitive data and encrypt it, leading organizations to pay a ransom to retrieve their files. It highlights the vulnerabilities associated with compromised IAM credentials and overly permissive IAM rules, and explains how security professionals can detect and prevent such attacks.

Keypoints:

• The ransomware technique targets Amazon S3 buckets, allowing attackers to encrypt objects and ransom them to organizations.
• Access is often gained through compromised IAM credentials or overly permissive IAM roles, enabling unauthorized access to S3 resources.
• Attackers can encrypt files using their own encryption keys and overwrite existing objects in S3 buckets.
• Cybersecurity professionals can detect ransomware attacks by monitoring AWS CloudTrail logs for suspicious activities, like unauthorized S3 PUT object calls.
• Preventative measures include enforcing resource control policies to deny unauthorized attempts to use custom encryption keys when uploading objects to S3 buckets.
• Ensuring data governance policies and alerting mechanisms are in place can help mitigate risks associated with ransomware attacks on cloud storage services.