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A solid resource for defenders, this article highlights essential logs for cloud incident investigations. Bookmark this guide to enhance your cloud security posture.
🔗 Reference: Invictus IR – Cloud Incident Readiness
You Should Know:
Critical Cloud Logs for Incident Response
1. AWS CloudTrail Logs
- Enable and monitor for unauthorized API calls:
aws cloudtrail lookup-events --lookup-attributes AttributeKey=EventName,AttributeValue=DeleteBucket
- Export logs to SIEM for analysis.
2. Azure Activity Logs
- Check suspicious sign-ins:
Get-AzLog -StartTime (Get-Date).AddDays(-1) -EndTime (Get-Date) | Where-Object {$_.OperationName -eq "Microsoft.Compute/virtualMachines/write"}
3. Google Cloud Audit Logs
- Detect IAM permission changes:
gcloud logging read "protoPayload.methodName:SetIamPolicy" --format=json
4. Linux System Logs (for Cloud VMs)
- Check SSH brute-force attempts:
grep "Failed password" /var/log/auth.log
- Monitor cron jobs for malicious activity:
cat /var/log/cron.log | grep "unauthorized"
5. Windows Event Logs (Hybrid Cloud)
- Extract failed RDP attempts:
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4625} -MaxEvents 10
What Undercode Say:
Cloud incident readiness relies on proactive log collection and analysis. Key takeaways:
– Centralize logs (SIEM/Syslog) for cross-platform visibility.
– Automate alerts on critical events (e.g., IAM changes, data exfiltration).
– Practice log retention policies (AWS S3, Azure Blob Storage).
– Use open-source tools like Logstash, Falco, or `Osquery` for real-time monitoring.
🔧 Bonus Commands:
- Kubernetes Audit Logs:
kubectl logs --namespace=kube-system kube-apiserver-kind-control-plane
- AWS GuardDuty Findings:
aws guardduty list-findings --detector-id <your-detector-id>
Expected Output:
A structured incident response report with:
- Timelines of critical log events.
- Mitigation steps (e.g., revoke compromised keys).
- Recommendations for hardening cloud configurations.
🔗 Further Reading: MITRE Cloud Matrix
References:
Reported By: Spenceralessi Cloud – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
