Incident Response in AWS

Incident Response in AWS

AWS provides comprehensive tools for incident response:

Initial Response Steps:

# Isolate compromised instance
aws ec2 modify-instance-attribute --instance-id i-1234567890abcdef0 \
  --groups sg-isolate

# Create snapshot for forensics
aws ec2 create-snapshot --volume-id vol-1234567890abcdef0 \
  --description "Incident response snapshot"

# Capture instance metadata
aws ec2 describe-instances --instance-ids i-1234567890abcdef0 > instance_details.json

AWS CloudTrail Analysis:

import boto3
import json

def analyze_cloudtrail_events(bucket, prefix):
    s3 = boto3.client('s3')
    
    # List CloudTrail logs
    objects = s3.list_objects_v2(Bucket=bucket, Prefix=prefix)
    
    suspicious_events = []
    for obj in objects.get('Contents', []):
        # Download and parse log file
        response = s3.get_object(Bucket=bucket, Key=obj['Key'])
        logs = json.loads(response['Body'].read())
        
        for record in logs['Records']:
            # Check for suspicious activities
            if record['eventName'] in ['RunInstances', 'CreateAccessKey', 'PutBucketPolicy']:
                suspicious_events.append(record)
    
    return suspicious_events

AWS Systems Manager for Response:

# Run commands on multiple instances
aws ssm send-command \
  --instance-ids "i-1234567890abcdef0" "i-0987654321fedcba0" \
  --document-name "AWS-RunShellScript" \
  --parameters 'commands=["netstat -an","ps aux"]'