Cloud Forensics

Cloud Forensics

Comprehensive cloud forensics skill for investigating incidents in cloud platform environments. Enables analysis of cloud audit logs, resource configurations, data access patterns, and identity activities across AWS, Azure, GCP, and Microsoft 365 environments.

Capabilities

• AWS Forensics: Analyze CloudTrail, VPC Flow Logs, S3 access, IAM activity
• Azure Forensics: Analyze Azure Activity Logs, Sign-in logs, resource changes
• GCP Forensics: Analyze Cloud Audit Logs, VPC Flow Logs, IAM activity
• M365 Forensics: Analyze Unified Audit Log, mailbox audit, SharePoint activity
• Identity Analysis: Track user activities, permission changes, suspicious access
• Resource Inventory: Document cloud resources and configurations
• Data Access Analysis: Track access to cloud storage and databases
• Timeline Generation: Create cloud activity timeline
• Evidence Preservation: Snapshot and preserve cloud evidence
• Configuration Analysis: Detect misconfigurations and security gaps

Quick Start

from cloud_forensics import AWSForensics, AzureForensics, CloudTimeline

# Initialize AWS forensics
aws = AWSForensics(profile="forensics", region="us-east-1")

# Get CloudTrail events
events = aws.get_cloudtrail_events(days=30)

# Analyze suspicious activity
suspicious = aws.detect_suspicious_activity()

# Create timeline
timeline = CloudTimeline()
timeline.add_aws(aws)

Usage

Task 1: AWS CloudTrail Analysis

Input: AWS credentials with CloudTrail access

Process:

1. Query CloudTrail events
2. Parse management events
3. Analyze data events
4. Detect anomalies
5. Generate timeline

Output: CloudTrail analysis report

Example:

from cloud_forensics import AWSForensics

# Initialize with profile
aws = AWSForensics(profile="forensics", region="us-east-1")

# Get CloudTrail events
events = aws.get_cloudtrail_events(
    start_time="2024-01-01",
    end_time="2024-01-31",
    lookup_attributes=[
        {"AttributeKey": "EventSource", "AttributeValue": "iam.amazonaws.com"}
    ]
)

for event in events:
    print(f"[{event.event_time}] {event.event_name}")
    print(f"  User: {event.user_identity}")
    print(f"  Source IP: {event.source_ip}")
    print(f"  User Agent: {event.user_agent}")
    print(f"  Resources: {event.resources}")

# Get events by user
user_events = aws.get_events_by_user("arn:aws:iam::123456789012:user/suspect")

# Get events by IP
ip_events = aws.get_events_by_ip("203.0.113.50")

# Analyze IAM changes
iam_changes = aws.get_iam_changes()
for change in iam_changes:
    print(f"IAM Change: {change.event_name}")
    print(f"  Actor: {change.user}")
    print(f"  Target: {change.affected_entity}")
    print(f"  Details: {change.details}")

# Detect privilege escalation
priv_esc = aws.detect_privilege_escalation()
for pe in priv_esc:
    print(f"PRIV ESC: {pe.technique}")
    print(f"  User: {pe.user}")
    print(f"  Evidence: {pe.events}")

# Detect credential abuse
cred_abuse = aws.detect_credential_abuse()

# Export to CSV
aws.export_events("/evidence/cloudtrail.csv")

# Generate report
aws.generate_report("/evidence/aws_forensics.html")

Task 2: AWS S3 Access Analysis

Input: S3 access logs or CloudTrail data events

Process:

1. Retrieve S3 access events
2. Analyze access patterns
3. Detect data exfiltration
4. Identify unauthorized access
5. Document findings

Output: S3 access analysis

Example:

from cloud_forensics import AWSS3Forensics

# Initialize S3 forensics
s3_forensics = AWSS3Forensics(profile="forensics")

# Get bucket access events
access = s3_forensics.get_bucket_access("sensitive-data-bucket")

for event in access:
    print(f"[{event.time}] {event.operation}")
    print(f"  Key: {event.key}")
    print(f"  Requester: {event.requester}")
    print(f"  Source IP: {event.source_ip}")
    print(f"  Bytes: {event.bytes_sent}")

# Detect large downloads (potential exfiltration)
large_downloads = s3_forensics.detect_large_downloads(
    threshold_gb=1,
    time_window_hours=24
)
for dl in large_downloads:
    print(f"LARGE DOWNLOAD: {dl.bucket}/{dl.key}")
    print(f"  Size: {dl.size_gb}GB")
    print(f"  Requester: {dl.requester}")

# Detect unusual access patterns
unusual = s3_forensics.detect_unusual_access()
for u in unusual:
    print(f"UNUSUAL: {u.description}")
    print(f"  Bucket: {u.bucket}")
    print(f"  Evidence: {u.evidence}")

# Get public access events
public = s3_forensics.get_public_access_events()

# Analyze bucket policy changes
policy_changes = s3_forensics.get_policy_changes()

# Export S3 access report
s3_forensics.generate_report("/evidence/s3_access.html")

Task 3: Azure Activity Log Analysis

Input: Azure credentials with Log Analytics access

Process:

1. Query Activity Logs
2. Analyze sign-in events
3. Track resource changes
4. Detect anomalies
5. Generate timeline

Output: Azure activity analysis

Example:

from cloud_forensics import AzureForensics

# Initialize Azure forensics
azure = AzureForensics(
    tenant_id="tenant-id",
    subscription_id="subscription-id"
)

# Get activity logs
activities = azure.get_activity_logs(
    start_time="2024-01-01",
    end_time="2024-01-31"
)

for activity in activities:
    print(f"[{activity.event_timestamp}] {activity.operation_name}")
    print(f"  Caller: {activity.caller}")
    print(f"  Resource: {activity.resource_id}")
    print(f"  Status: {activity.status}")

# Get sign-in logs
signins = azure.get_signin_logs()
for signin in signins:
    print(f"Sign-in: {signin.user_principal_name}")
    print(f"  Time: {signin.created_datetime}")
    print(f"  IP: {signin.ip_address}")
    print(f"  Location: {signin.location}")
    print(f"  App: {signin.app_display_name}")
    print(f"  Status: {signin.status}")
    print(f"  Risk: {signin.risk_level}")

# Detect risky sign-ins
risky = azure.get_risky_signins()
for r in risky:
    print(f"RISKY: {r.user_principal_name}")
    print(f"  Risk level: {r.risk_level}")
    print(f"  Risk detail: {r.risk_detail}")

# Get directory audit logs
audit = azure.get_directory_audit()
for entry in audit:
    print(f"Audit: {entry.activity_display_name}")
    print(f"  Actor: {entry.initiated_by}")
    print(f"  Target: {entry.target_resources}")

# Detect suspicious activities
suspicious = azure.detect_suspicious_activities()

# Export report
azure.generate_report("/evidence/azure_forensics.html")

Task 4: Microsoft 365 Investigation

Input: M365 admin credentials

Process:

1. Query Unified Audit Log
2. Analyze mailbox activity
3. Track SharePoint/OneDrive access
4. Detect data exfiltration
5. Generate report

Output: M365 investigation results

Example:

from cloud_forensics import M365Forensics

# Initialize M365 forensics
m365 = M365Forensics(tenant_id="tenant-id")

# Search Unified Audit Log
events = m365.search_unified_audit_log(
    start_date="2024-01-01",
    end_date="2024-01-31",
    record_type="ExchangeItem",
    operations=["Send", "MailboxLogin"]
)

for event in events:
    print(f"[{event.creation_date}] {event.operation}")
    print(f"  User: {event.user_id}")
    print(f"  Client IP: {event.client_ip}")
    print(f"  Workload: {event.workload}")

# Get mailbox audit logs
mailbox = m365.get_mailbox_audit(user="user@company.com")
for entry in mailbox:
    print(f"[{entry.timestamp}] {entry.operation}")
    print(f"  Folders: {entry.folders}")
    print(f"  Client: {entry.client_info}")

# Get SharePoint activity
sharepoint = m365.get_sharepoint_activity(site="https://company.sharepoint.com/sites/sensitive")
for activity in sharepoint:
    print(f"[{activity.time}] {activity.operation}")
    print(f"  User: {activity.user}")
    print(f"  File: {activity.file_name}")
    print(f"  Site: {activity.site_url}")

# Detect data exfiltration
exfil = m365.detect_data_exfiltration()
for e in exfil:
    print(f"EXFIL: {e.indicator}")
    print(f"  User: {e.user}")
    print(f"  Data: {e.data_volume}")

# Get email forwarding rules
forwarding = m365.get_forwarding_rules()
for rule in forwarding:
    print(f"Forward: {rule.mailbox} -> {rule.forward_to}")
    print(f"  Created: {rule.created}")

# Get eDiscovery searches
ediscovery = m365.get_ediscovery_activity()

# Export report
m365.generate_report("/evidence/m365_forensics.html")

Task 5: GCP Cloud Audit Analysis

Input: GCP credentials with logging access

Process:

1. Query Cloud Audit Logs
2. Analyze admin activity
3. Track data access
4. Detect anomalies
5. Generate timeline

Output: GCP audit analysis

Example:

from cloud_forensics import GCPForensics

# Initialize GCP forensics
gcp = GCPForensics(project_id="my-project")

# Get admin activity logs
admin_logs = gcp.get_admin_activity_logs(
    start_time="2024-01-01",
    end_time="2024-01-31"
)

for log in admin_logs:
    print(f"[{log.timestamp}] {log.method_name}")
    print(f"  Principal: {log.principal_email}")
    print(f"  Resource: {log.resource_name}")
    print(f"  Service: {log.service_name}")

# Get data access logs
data_logs = gcp.get_data_access_logs()
for log in data_logs:
    print(f"[{log.timestamp}] {log.method_name}")
    print(f"  Principal: {log.principal_email}")
    print(f"  Resource: {log.resource_name}")

# Analyze IAM changes
iam_changes = gcp.get_iam_changes()
for change in iam_changes:
    print(f"IAM: {change.action}")
    print(f"  Member: {change.member}")
    print(f"  Role: {change.role}")
    print(f"  Resource: {change.resource}")

# Get Cloud Storage access
storage = gcp.get_storage_access_logs(bucket="sensitive-bucket")

# Detect suspicious activities
suspicious = gcp.detect_suspicious_activities()
for s in suspicious:
    print(f"SUSPICIOUS: {s.description}")
    print(f"  Evidence: {s.evidence}")

# Export VPC Flow Logs
flow_logs = gcp.get_vpc_flow_logs()

# Generate report
gcp.generate_report("/evidence/gcp_forensics.html")

Task 6: Cloud Identity Investigation

Input: Cloud platform credentials

Process:

1. Enumerate identities
2. Analyze permission changes
3. Track authentication events
4. Detect credential compromise
5. Document findings

Output: Identity investigation results

Example:

from cloud_forensics import CloudIdentityAnalyzer

# Initialize identity analyzer
analyzer = CloudIdentityAnalyzer()

# Add cloud sources
analyzer.add_aws(profile="forensics")
analyzer.add_azure(tenant_id="tenant-id")
analyzer.add_gcp(project_id="project-id")

# Get identity timeline
timeline = analyzer.get_identity_timeline(
    identity="user@company.com"
)
for event in timeline:
    print(f"[{event.timestamp}] {event.cloud} - {event.action}")
    print(f"  Details: {event.details}")

# Detect impossible travel
impossible = analyzer.detect_impossible_travel()
for i in impossible:
    print(f"IMPOSSIBLE TRAVEL: {i.identity}")
    print(f"  Location 1: {i.location1} at {i.time1}")
    print(f"  Location 2: {i.location2} at {i.time2}")

# Detect credential sharing
sharing = analyzer.detect_credential_sharing()
for s in sharing:
    print(f"SHARING: {s.identity}")
    print(f"  Evidence: {s.evidence}")

# Get permission changes
perms = analyzer.get_permission_changes()
for p in perms:
    print(f"Permission: {p.identity}")
    print(f"  Cloud: {p.cloud}")
    print(f"  Change: {p.change_type}")
    print(f"  Details: {p.details}")

# Detect privilege escalation
priv_esc = analyzer.detect_privilege_escalation()

# Generate identity report
analyzer.generate_report("/evidence/identity_investigation.html")

Task 7: Cloud Resource Inventory

Input: Cloud platform credentials

Process:

1. Enumerate all resources
2. Document configurations
3. Identify exposed resources
4. Check security settings
5. Generate inventory

Output: Complete resource inventory

Example:

from cloud_forensics import CloudInventory

# Initialize inventory
inventory = CloudInventory()

# Add cloud accounts
inventory.add_aws(profile="forensics", regions=["us-east-1", "us-west-2"])
inventory.add_azure(tenant_id="tenant-id", subscription_id="sub-id")
inventory.add_gcp(project_id="project-id")

# Collect inventory
resources = inventory.collect_all()

print(f"Total resources: {resources.total_count}")
print(f"AWS resources: {resources.aws_count}")
print(f"Azure resources: {resources.azure_count}")
print(f"GCP resources: {resources.gcp_count}")

# Get resources by type
ec2_instances = inventory.get_by_type("aws:ec2:instance")
for instance in ec2_instances:
    print(f"EC2: {instance.id}")
    print(f"  State: {instance.state}")
    print(f"  Type: {instance.instance_type}")
    print(f"  VPC: {instance.vpc_id}")
    print(f"  Public IP: {instance.public_ip}")

# Find exposed resources
exposed = inventory.find_exposed_resources()
for e in exposed:
    print(f"EXPOSED: {e.resource_type} - {e.resource_id}")
    print(f"  Reason: {e.exposure_reason}")

# Get security groups
security_groups = inventory.get_security_groups()
for sg in security_groups:
    print(f"SG: {sg.id}")
    print(f"  Open ports: {sg.open_ports}")
    print(f"  Public access: {sg.allows_public}")

# Export inventory
inventory.export_json("/evidence/cloud_inventory.json")
inventory.export_csv("/evidence/cloud_inventory.csv")

# Generate inventory report
inventory.generate_report("/evidence/inventory_report.html")

Task 8: Evidence Preservation

Input: Cloud resources to preserve

Process:

1. Identify resources to preserve
2. Create snapshots
3. Export logs
4. Document chain of custody
5. Verify preservation

Output: Preserved evidence with documentation

Example:

from cloud_forensics import CloudEvidencePreserver

# Initialize preserver
preserver = CloudEvidencePreserver(
    output_bucket="forensics-evidence-bucket",
    case_id="CASE-2024-001"
)

# AWS evidence preservation
aws_evidence = preserver.preserve_aws_instance(
    instance_id="i-1234567890abcdef0",
    region="us-east-1"
)
print(f"Instance snapshot: {aws_evidence.snapshot_id}")
print(f"Memory dump: {aws_evidence.memory_dump}")
print(f"Disk images: {aws_evidence.disk_images}")

# Preserve S3 bucket
s3_evidence = preserver.preserve_s3_bucket(
    bucket_name="compromised-bucket",
    include_versions=True
)

# Preserve CloudTrail logs
trail_evidence = preserver.preserve_cloudtrail(
    trail_name="main-trail",
    start_date="2024-01-01",
    end_date="2024-01-31"
)

# Azure evidence preservation
azure_evidence = preserver.preserve_azure_vm(
    resource_group="my-rg",
    vm_name="compromised-vm"
)

# Preserve Azure storage
storage_evidence = preserver.preserve_azure_storage(
    storage_account="mystorageaccount",
    container="sensitive-data"
)

# Generate chain of custody
preserver.generate_chain_of_custody("/evidence/chain_of_custody.pdf")

# Verify evidence integrity
verification = preserver.verify_evidence()
for item in verification:
    print(f"Evidence: {item.id}")
    print(f"  Hash: {item.hash}")
    print(f"  Verified: {item.verified}")

Task 9: Cloud Network Analysis

Input: VPC Flow Logs or network logs

Process:

1. Parse flow logs
2. Analyze traffic patterns
3. Identify C2 communications
4. Detect lateral movement
5. Document network activity

Output: Cloud network analysis

Example:

from cloud_forensics import CloudNetworkAnalyzer

# Initialize network analyzer
analyzer = CloudNetworkAnalyzer()

# Load AWS VPC Flow Logs
analyzer.load_aws_flow_logs(
    log_group="/aws/vpc/flow-logs",
    start_time="2024-01-01",
    end_time="2024-01-31"
)

# Get flow statistics
stats = analyzer.get_statistics()
print(f"Total flows: {stats.total_flows}")
print(f"Accepted: {stats.accepted}")
print(f"Rejected: {stats.rejected}")

# Find top talkers
talkers = analyzer.get_top_talkers(limit=10)
for t in talkers:
    print(f"{t.source_ip} -> {t.dest_ip}:{t.dest_port}")
    print(f"  Bytes: {t.bytes}")
    print(f"  Packets: {t.packets}")

# Detect suspicious traffic
suspicious = analyzer.detect_suspicious_traffic()
for s in suspicious:
    print(f"SUSPICIOUS: {s.description}")
    print(f"  Source: {s.source}")
    print(f"  Destination: {s.destination}")
    print(f"  Reason: {s.reason}")

# Detect C2 beaconing
beacons = analyzer.detect_beaconing()
for b in beacons:
    print(f"BEACON: {b.source} -> {b.destination}")
    print(f"  Interval: {b.interval_seconds}s")

# Detect data exfiltration
exfil = analyzer.detect_exfiltration()

# Analyze security group violations
violations = analyzer.analyze_sg_violations()

# Generate network report
analyzer.generate_report("/evidence/cloud_network.html")

Task 10: Cloud Timeline Generation

Input: Multiple cloud log sources

Process:

1. Collect events from all sources
2. Normalize timestamps
3. Correlate events
4. Build unified timeline
5. Identify attack sequence

Output: Unified cloud timeline

Example:

from cloud_forensics import CloudTimeline

# Initialize timeline
timeline = CloudTimeline()

# Add AWS sources
timeline.add_cloudtrail(profile="forensics", region="us-east-1")
timeline.add_vpc_flow_logs(log_group="/aws/vpc/flow-logs")
timeline.add_s3_access_logs(bucket="access-logs-bucket")

# Add Azure sources
timeline.add_azure_activity_logs(subscription_id="sub-id")
timeline.add_azure_signin_logs(tenant_id="tenant-id")

# Add GCP sources
timeline.add_gcp_audit_logs(project_id="project-id")

# Build timeline
events = timeline.build(
    start_time="2024-01-01",
    end_time="2024-01-31"
)

for event in events:
    print(f"[{event.timestamp}] {event.cloud} - {event.event_type}")
    print(f"  Actor: {event.actor}")
    print(f"  Action: {event.action}")
    print(f"  Target: {event.target}")
    print(f"  Source IP: {event.source_ip}")

# Correlate events
correlated = timeline.correlate_by_ip("203.0.113.50")

# Identify attack chain
attack = timeline.identify_attack_sequence()
for stage in attack.stages:
    print(f"Stage: {stage.name}")
    print(f"  Technique: {stage.mitre_technique}")
    print(f"  Events: {len(stage.events)}")

# Export timeline
timeline.export_csv("/evidence/cloud_timeline.csv")
timeline.export_json("/evidence/cloud_timeline.json")

# Generate interactive timeline
timeline.generate_html("/evidence/cloud_timeline.html")

Configuration

Environment Variables

Options

Examples

Example 1: Cloud Breach Investigation

Scenario: Investigating unauthorized access to cloud resources

from cloud_forensics import AWSForensics, CloudTimeline

# Initialize AWS forensics
aws = AWSForensics(profile="forensics")

# Find initial compromise
suspicious = aws.detect_suspicious_activities()

# Get attacker's activities
attacker_events = aws.get_events_by_ip("203.0.113.50")

# Build attack timeline
timeline = CloudTimeline()
timeline.add_cloudtrail(profile="forensics")

# Identify all affected resources
affected = aws.get_affected_resources(ip="203.0.113.50")
for resource in affected:
    print(f"Affected: {resource.type} - {resource.id}")

# Preserve evidence
aws.preserve_evidence(affected, output_bucket="forensics-bucket")

Example 2: Data Exfiltration Analysis

Scenario: Investigating data theft from cloud storage

from cloud_forensics import AWSS3Forensics, AzureStorageForensics

# Analyze S3 access
s3 = AWSS3Forensics(profile="forensics")

# Find large downloads
downloads = s3.detect_large_downloads(threshold_gb=1)

# Analyze access patterns
patterns = s3.analyze_access_patterns("sensitive-bucket")

# Get unique requesters
requesters = s3.get_unique_requesters("sensitive-bucket")
for r in requesters:
    print(f"Requester: {r.identity}")
    print(f"  Downloads: {r.download_count}")
    print(f"  Volume: {r.total_bytes}")

Limitations

• Requires appropriate cloud permissions
• Log retention affects available data
• Some logs may not be enabled
• Cross-account investigation requires access
• Real-time analysis not supported
• API rate limits may affect collection
• Cost implications for large-scale queries

Troubleshooting

Common Issue 1: Permission Denied

Problem: Cannot access cloud logs Solution:

• Verify IAM permissions
• Check role trust relationships
• Ensure correct credentials

Common Issue 2: Missing Logs

Problem: Expected logs not found Solution:

• Verify logging is enabled
• Check log retention settings
• Confirm correct time range

Common Issue 3: API Throttling

Problem: Rate limit errors Solution:

• Use parallel collection carefully
• Implement exponential backoff
• Request limit increases

Related Skills

• log-forensics: General log analysis
• network-forensics: Network traffic analysis
• timeline-forensics: Timeline integration
• email-forensics: M365 email investigation
• artifact-collection: Evidence preservation

References

• Cloud Forensics Reference
• AWS Forensics Guide
• Azure Forensics Guide
• GCP Forensics Guide