Within 6 hours, the attacker spun up 200 GPU instances for crypto mining, resulting in a $50,000 bill before detection. The root cause? An internal dashboard using file:// to read local templates without sanitization. The string fetch-url-file-3A-2F-2F-2Froot-2F.aws-2Fconfig is not a random anomaly—it’s a digital distress signal. It indicates that either an attacker is probing for Local File Inclusion, or a developer inadvertently logged an attempt to read the most sensitive AWS configuration on a Linux system.
If you see file:///root/.aws/config anywhere in your logs, act as if your AWS keys are already public. Because in the cloud, every second counts. Want to test your own infrastructure? Run this curl command safely in a controlled environment to see if your server leaks files: fetch-url-file-3A-2F-2F-2Froot-2F.aws-2Fconfig
curl -v "https://your-app.com/page?file=file:///root/.aws/config" If you get back any content other than a permission denied error, your system is vulnerable. Within 6 hours, the attacker spun up 200
# Change ownership to root only sudo chown -R root:root /root/.aws sudo chmod 700 /root/.aws sudo chmod 600 /root/.aws/config sudo chmod 600 /root/.aws/credentials The string fetch-url-file-3A-2F-2F-2Froot-2F
fetch-url-file-3A-2F-2F-2Froot-2F.aws-2Fconfig