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Under Active Attack

Executive Summary

AWS released a comprehensive incident response guide demonstrating two critical attack scenarios affecting cloud environments in 2025. The first scenario involves a cross-account S3 data deletion attack where threat actors assumed roles from trusted accounts, performed reconnaissance through ListBuckets operations, and executed scripted deletions of financial reports, PII databases, and production backups within a 13-second window. The second scenario showcases cryptocurrency mining operations deployed through AWS CloudFormation, where attackers leveraged console credentials without MFA to create the 'CRYPTO' stack containing EC2 instances for mining operations. Both incidents highlight the sophistication of modern cloud-native attacks that exploit legitimate AWS services and cross-account trust relationships.

These attack patterns are increasingly relevant as organizations accelerate cloud adoption while struggling with proper access controls, zero trust implementation, and multi-cloud visibility. The incidents underscore the critical need for enhanced CloudTrail monitoring, cross-account access reviews, and comprehensive egress security policies.

Why This Matters Now

Cloud environments face escalating threats as attackers increasingly target cross-account relationships and abuse legitimate cloud services for malicious purposes, making advanced CloudTrail analysis and zero trust security controls essential for modern enterprise defense.

Attack Path Analysis

MITRE ATT&CK® Techniques

Potential Compliance Exposure

Sector Implications

Sources

Frequently Asked Questions

Implement least privilege access controls, enforce MFA for cross-account roles, enable comprehensive CloudTrail logging, and regularly audit cross-account trust relationships with automated policy reviews.

Cloud Native Security Fabric Mitigations and ControlsCNSF

Based on the attack progression modeled above, these are the defensive controls that would constrain each stage.

Aviatrix Zero Trust CNSF would have significantly constrained this multi-account AWS attack by implementing workload segmentation and identity-aware access controls. The comprehensive east-west traffic enforcement and controlled egress policies would likely have reduced the attacker's ability to move laterally across regions and exfiltrate sensitive data.

Initial Compromise

Control: Cloud Native Security Fabric (CNSF)

Mitigation: Identity-aware access controls would likely have constrained the blast radius of compromised credentials by enforcing granular workload-level authentication and reducing cross-account reachability through centralized policy enforcement

Privilege Escalation

Control: Zero Trust Segmentation

Mitigation: Workload-level segmentation policies would likely have limited the scope of role assumption by constraining which services and resources could be accessed from compromised accounts, reducing the effectiveness of privilege escalation attempts

Lateral Movement

Control: East-West Traffic Security

Mitigation: Comprehensive east-west traffic controls would likely have constrained inter-service communication paths and reduced the attacker's ability to pivot between AWS services and regions through enforced segmentation boundaries

Command & Control

Control: Multicloud Visibility & Control

Mitigation: Centralized visibility and control mechanisms would likely have detected and constrained unauthorized CloudShell usage patterns while limiting the scope of scripted automation through real-time policy enforcement and behavioral analysis

Exfiltration

Control: Egress Security & Policy Enforcement

Mitigation: Controlled egress policies would likely have constrained large-scale data transfer operations and reduced the volume of exfiltrated sensitive data through granular outbound traffic controls and data flow restrictions

Impact (Mitigations)

While some data destruction may still occur within compromised segments, the overall business impact would likely be significantly reduced due to constrained attacker reach and limited ability to deploy resource-intensive mining operations across the infrastructure

Impact at a Glance

Affected Business Functions

  • Cloud Infrastructure Operations
  • Data Storage and Backup Services
  • Financial Data Management
  • Customer PII Processing
Operational Disruption

Estimated downtime: 3 days

Financial Impact

Estimated loss: $75,000

Data Exposure

Financial reports including Q4-2024 data, customer personally identifiable information (PII) database, and production database backups were accessed and deleted. Unauthorized cryptocurrency mining operations consumed significant compute resources leading to unexpected AWS billing charges.

Recommended Actions

  • • Implement Zero Trust Segmentation with least privilege access controls to prevent cross-account role abuse and limit blast radius of credential compromise
  • • Deploy Egress Security & Policy Enforcement to detect and block unauthorized data exfiltration attempts and cryptocurrency mining pool connections
  • • Enable Multicloud Visibility & Control with centralized monitoring to detect anomalous cross-region activities, suspicious automation patterns, and rapid resource deployments
  • • Enforce Encrypted Traffic (HPE) controls with comprehensive traffic inspection to identify data theft operations and prevent unencrypted sensitive data exposure
  • • Activate Threat Detection & Anomaly Response capabilities to establish behavioral baselines and alert on unusual console session patterns, resource creation spikes, and scripted deletion sequences

Secure the Paths Between Cloud Workloads

A cloud-native security fabric that enforces Zero Trust across workload communication—reducing attack paths, compliance risk, and operational complexity.

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