aws-security-cards/cards/html/guardduty.html at main · TocConsulting/aws-security-cards · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>AWS GuardDuty Security | AWS Security Cards</title>
<meta name="description" content="GuardDuty is AWS's managed threat detection service. It analyzes CloudTrail, VPC Flow Logs, and DNS logs to detect malicious activity. Red teamers must understand what triggers alerts.">
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</head>
<body>

<!-- Card Image -->
<div class="card-image">
  <img src="../images/guardduty-card.webp" alt="AWS GuardDuty Security" />
</div>

<!-- Header -->
<div class="header">
  <div class="header-content">
    <div class="header-icon"><img src="../icons/guardduty.svg" alt="AWS GuardDuty Security" /></div>
    <div>
      <div>
        <span class="header-title">AWS GuardDuty Security</span>
        <span class="header-badge">THREAT DETECTION</span>
      </div>
      <p class="header-desc">GuardDuty is AWS's managed threat detection service. It analyzes CloudTrail, VPC Flow Logs, and DNS logs to detect malicious activity. Red teamers must understand what triggers alerts.</p>
    </div>
  </div>
</div>

<!-- Stats -->
<div class="stats-row">
        <div class="stat-card">
          <div class="stat-value" style="color: #f87171;">ML-Based</div>
          <div class="stat-label">Detection</div>
        </div>
        <div class="stat-card">
          <div class="stat-value" style="color: #4ade80;">100+</div>
          <div class="stat-label">Finding Types</div>
        </div>
        <div class="stat-card">
          <div class="stat-value" style="color: #60a5fa;">3</div>
          <div class="stat-label">Data Sources</div>
        </div>
        <div class="stat-card">
          <div class="stat-value" style="color: #c084fc;">~15 min</div>
          <div class="stat-label">Detection Delay</div>
        </div></div>

<!-- Overview -->
<div class="section"><h2><span style="color:#06b6d4;">&#x1F4CB;</span> Service Overview</h2><div class="overview-grid">
        <div>
          <h4 style="color: #06b6d4;">CloudTrail Analysis</h4>
          <p>Analyzes management events for suspicious API activity: unusual regions, first-time API calls, known malicious IPs, credential abuse patterns.</p>

        </div>
        <div>
          <h4 style="color: #06b6d4;">VPC Flow Logs</h4>
          <p>Detects network anomalies: port scanning, unusual outbound traffic, communication with known C2 servers, cryptocurrency mining patterns.</p>

        </div>
        <div>
          <h4 style="color: #06b6d4;">DNS Logs</h4>
          <p>Monitors DNS queries for: C2 domain lookups, DNS exfiltration attempts, cryptomining pool connections, DGA domain patterns.</p>

        </div></div></div>

<!-- Risk Assessment -->

<div class="section">
  <h2>Security Risk Assessment</h2>
  <div class="risk-gauge">
    <div class="risk-bar-container">
      <div class="risk-bar">
        <div class="risk-bar-fill" style="width: 70%;"></div>
      </div>
      <div class="risk-labels"><span>Low</span><span>Medium</span><span>High</span><span>Critical</span></div>
    </div>
    <div class="risk-score">
      <div class="risk-score-value">7.0</div>
      <div class="risk-score-label">Risk Score</div>
    </div>
  </div>
  <p class="risk-desc">GuardDuty can be disabled, findings can be archived/suppressed, and detection has blind spots. Understanding finding types helps red teamers operate below detection thresholds.</p>
</div>

<!-- Main Panels -->
<div class="panels-grid">
      <div class="panel" style="border-color: #f8717133;">
        <h3 style="color: #f87171;">⚔️ Attack Vectors</h3><h4 style="color: #f87171;">Disable Detection</h4><ul><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Disable GuardDuty detector entirely</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Suspend GuardDuty in specific regions</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Delete detector to stop all findings</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Remove member accounts from org detector</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Modify publishing destination</li></ul><h4 style="color: #f87171;">Suppress Findings</h4><ul><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Archive findings to hide them</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Create suppression rules for your IPs</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Add attacker IPs to trusted IP list</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Mark findings as &quot;useful&quot; to reduce noise</li><li><span class="bullet" style="color: #f87171;">&#x2022;</span> Modify S3 publication frequency</li></ul></div>
      <div class="panel" style="border-color: #fb923c33;">
        <h3 style="color: #fb923c;">👻 Evasion Techniques</h3><h4 style="color: #fb923c;">Behavioral Evasion</h4><ul><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Stay within normal API call patterns</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Use same regions as legitimate users</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Avoid known malicious IP addresses</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Throttle reconnaissance to avoid spikes</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Blend with existing traffic patterns</li></ul><h4 style="color: #fb923c;">Technical Evasion</h4><ul><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Use residential proxies, not VPNs</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Avoid Tor exit nodes (flagged)</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> DNS over HTTPS to bypass DNS analysis</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Encrypt C2 traffic to avoid pattern detection</li><li><span class="bullet" style="color: #fb923c;">&#x2022;</span> Use legitimate AWS services as proxies</li></ul></div>
      <div class="panel" style="border-color: #22d3ee33;">
        <h3 style="color: #22d3ee;">🔍 Enumeration</h3>
        <div class="cmd-block">
          <div class="cmd-title">List Detectors</div>
          <pre><code>aws guardduty list-detectors</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">Get Detector Details</div>
          <pre><code>aws guardduty get-detector --detector-id abc123</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">List Findings</div>
          <pre><code>aws guardduty list-findings \\
  --detector-id abc123 \\
  --finding-criteria '{&quot;Criterion&quot;:{&quot;severity&quot;:{&quot;Gte&quot;:7}}}'</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">List IP Sets (Trusted/Threat)</div>
          <pre><code>aws guardduty list-ip-sets --detector-id abc123</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">List Suppression Rules</div>
          <pre><code>aws guardduty list-filters --detector-id abc123</code></pre>
        </div></div>
      <div class="panel" style="border-color: #c084fc33;">
        <h3 style="color: #c084fc;">🚨 Key Finding Types</h3><h4 style="color: #c084fc;">IAM Findings</h4><ul><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> UnauthorizedAccess:IAMUser/InstanceCredentialExfiltration</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> Recon:IAMUser/MaliciousIPCaller</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> PenTest:IAMUser/KaliLinux</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> Persistence:IAMUser/AnomalousBehavior</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> PrivilegeEscalation:IAMUser/AnomalousBehavior</li></ul><h4 style="color: #c084fc;">EC2/Network Findings</h4><ul><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> CryptoCurrency:EC2/BitcoinTool.B!DNS</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> Backdoor:EC2/C&amp;CActivity.B!DNS</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> Trojan:EC2/DNSDataExfiltration</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> UnauthorizedAccess:EC2/SSHBruteForce</li><li><span class="bullet" style="color: #c084fc;">&#x2022;</span> Impact:EC2/PortSweep</li></ul></div>
      <div class="panel" style="border-color: #facc1533;">
        <h3 style="color: #facc15;">⚡ Common Triggers</h3><h4 style="color: #facc15;">Will Trigger GuardDuty</h4><ul><li><span class="bullet" style="color: #facc15;">&#x2022;</span> API calls from Tor exit nodes</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> Calls from known malicious IPs</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> First-time API in unusual region</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> EC2 credential use outside AWS</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> DNS queries to known C2 domains</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> Port scanning from EC2 instances</li></ul><h4 style="color: #facc15;">May NOT Trigger</h4><ul><li><span class="bullet" style="color: #facc15;">&#x2022;</span> API calls from residential IPs</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> Slow, low-volume reconnaissance</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> Traffic to non-blacklisted domains</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> Actions matching normal patterns</li><li><span class="bullet" style="color: #facc15;">&#x2022;</span> Encrypted exfiltration channels</li></ul></div>
      <div class="panel" style="border-color: #4ade8033;">
        <h3 style="color: #4ade80;">🛡️ Detection</h3><h4 style="color: #4ade80;">CloudTrail Events to Monitor</h4><ul><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> DeleteDetector - detector deleted</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> UpdateDetector - settings changed</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> ArchiveFindings - findings hidden</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> CreateFilter - suppression rule added</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> CreateIPSet - trusted IP list modified</li></ul><h4 style="color: #4ade80;">Indicators of Tampering</h4><ul><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> GuardDuty disabled unexpectedly</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> New suppression filters created</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> Findings archived in bulk</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> Trusted IP list expanded</li><li><span class="bullet" style="color: #4ade80;">&#x2022;</span> Threat IP list deleted</li></ul></div></div>

<!-- Exploitation -->
<div class="section"><h2><span style="color:#f87171;">&#x1F4BB;</span> Exploitation Commands</h2><div class="cmd-grid">
        <div class="cmd-block">
          <div class="cmd-title">Disable GuardDuty Detector</div>
          <pre><code>aws guardduty update-detector \\
  --detector-id abc123 \\
  --no-enable</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">Delete GuardDuty Detector</div>
          <pre><code>aws guardduty delete-detector --detector-id abc123</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">Archive All Findings</div>
          <pre><code>aws guardduty archive-findings \\
  --detector-id abc123 \\
  --finding-ids $(aws guardduty list-findings --detector-id abc123 --query 'FindingIds' --output text)</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">Create Suppression Rule</div>
          <pre><code>aws guardduty create-filter \\
  --detector-id abc123 \\
  --name &quot;SuppressMyIP&quot; \\
  --action ARCHIVE \\
  --finding-criteria '{&quot;Criterion&quot;:{&quot;service.action.networkConnectionAction.remoteIpDetails.ipAddressV4&quot;:{&quot;Eq&quot;:[&quot;1.2.3.4&quot;]}}}'</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">Add Trusted IP</div>
          <pre><code>aws guardduty create-ip-set \\
  --detector-id abc123 \\
  --name &quot;TrustedIPs&quot; \\
  --format TXT \\
  --location s3://bucket/trusted-ips.txt \\
  --activate</code></pre>
        </div>
        <div class="cmd-block">
          <div class="cmd-title">Delete Threat IP List</div>
          <pre><code>aws guardduty delete-threat-intel-set \\
  --detector-id abc123 \\
  --threat-intel-set-id threat123</code></pre>
        </div></div></div>

<!-- Policies -->
<div class="section"><h2><span style="color:#4ade80;">&#x1F4DC;</span> Policy Examples</h2><div class="policy-grid">
        <div class="policy-card" style="border-color: #ef444433; background: rgba(239,68,68,0.05);">
          <div class="policy-header">
            <span style="color: #f87171; font-size: 1.2em;">&#x2717;</span>
            <span style="color: #f87171; font-weight: 600;">Dangerous - Can Disable GuardDuty</span>
          </div>
          <pre><code>{
  &quot;Version&quot;: &quot;2012-10-17&quot;,
  &quot;Statement&quot;: [{
    &quot;Effect&quot;: &quot;Allow&quot;,
    &quot;Action&quot;: &quot;guardduty:*&quot;,
    &quot;Resource&quot;: &quot;*&quot;
  }]
}</code></pre>
          <p class="policy-desc">Full GuardDuty access allows disabling detection and suppressing findings</p>
        </div>
        <div class="policy-card" style="border-color: #22c55e33; background: rgba(34,197,94,0.05);">
          <div class="policy-header">
            <span style="color: #4ade80; font-size: 1.2em;">&#x2713;</span>
            <span style="color: #4ade80; font-weight: 600;">Read-Only - Security Monitoring</span>
          </div>
          <pre><code>{
  &quot;Version&quot;: &quot;2012-10-17&quot;,
  &quot;Statement&quot;: [{
    &quot;Effect&quot;: &quot;Allow&quot;,
    &quot;Action&quot;: [
      &quot;guardduty:Get*&quot;,
      &quot;guardduty:List*&quot;,
      &quot;guardduty:Describe*&quot;
    ],
    &quot;Resource&quot;: &quot;*&quot;
  }]
}</code></pre>
          <p class="policy-desc">Read-only access for security analysts without modification rights</p>
        </div>
        <div class="policy-card" style="border-color: #22c55e33; background: rgba(34,197,94,0.05);">
          <div class="policy-header">
            <span style="color: #4ade80; font-size: 1.2em;">&#x2713;</span>
            <span style="color: #4ade80; font-weight: 600;">SCP - Prevent GuardDuty Disable</span>
          </div>
          <pre><code>{
  &quot;Version&quot;: &quot;2012-10-17&quot;,
  &quot;Statement&quot;: [{
    &quot;Sid&quot;: &quot;PreventGuardDutyDisable&quot;,
    &quot;Effect&quot;: &quot;Deny&quot;,
    &quot;Action&quot;: [
      &quot;guardduty:DeleteDetector&quot;,
      &quot;guardduty:UpdateDetector&quot;,
      &quot;guardduty:DeleteMembers&quot;,
      &quot;guardduty:DisassociateFromMasterAccount&quot;
    ],
    &quot;Resource&quot;: &quot;*&quot;
  }]
}</code></pre>
          <p class="policy-desc">Organization SCP to prevent disabling GuardDuty in member accounts</p>
        </div>
        <div class="policy-card" style="border-color: #ef444433; background: rgba(239,68,68,0.05);">
          <div class="policy-header">
            <span style="color: #f87171; font-size: 1.2em;">&#x2717;</span>
            <span style="color: #f87171; font-weight: 600;">Dangerous - Can Suppress Findings</span>
          </div>
          <pre><code>{
  &quot;Version&quot;: &quot;2012-10-17&quot;,
  &quot;Statement&quot;: [{
    &quot;Effect&quot;: &quot;Allow&quot;,
    &quot;Action&quot;: [
      &quot;guardduty:ArchiveFindings&quot;,
      &quot;guardduty:CreateFilter&quot;,
      &quot;guardduty:UpdateFilter&quot;
    ],
    &quot;Resource&quot;: &quot;*&quot;
  }]
}</code></pre>
          <p class="policy-desc">Ability to archive findings and create suppression rules hides attacks</p>
        </div></div></div>

<!-- Defenses -->
<div class="section"><h2><span style="color:#4ade80;">&#x1F6E1;&#xFE0F;</span> Defense Recommendations</h2><div class="defense-grid">
        <div class="defense-card">
          <div class="defense-header">
            <span class="defense-icon">🏢</span>
            <div>
              <h4>Use Organization Delegated Admin</h4>
              <p>Centralize GuardDuty management so member accounts can't disable it.</p>
              <pre><code>aws guardduty enable-organization-admin-account \\
  --admin-account-id 123456789012</code></pre>
            </div>
          </div>
        </div>
        <div class="defense-card">
          <div class="defense-header">
            <span class="defense-icon">🔒</span>
            <div>
              <h4>SCP to Prevent Tampering</h4>
              <p>Use Service Control Policies to deny GuardDuty modifications.</p>

            </div>
          </div>
        </div>
        <div class="defense-card">
          <div class="defense-header">
            <span class="defense-icon">📊</span>
            <div>
              <h4>Export Findings to S3/SIEM</h4>
              <p>Publish findings to S3 or EventBridge for independent monitoring.</p>
              <pre><code>aws guardduty create-publishing-destination \\
  --detector-id abc123 \\
  --destination-type S3 \\
  --destination-properties DestinationArn=arn:aws:s3:::findings-bucket</code></pre>
            </div>
          </div>
        </div>
        <div class="defense-card">
          <div class="defense-header">
            <span class="defense-icon">🔔</span>
            <div>
              <h4>Alert on GuardDuty Changes</h4>
              <p>Create CloudWatch alarms for DeleteDetector, UpdateDetector, ArchiveFindings.</p>

            </div>
          </div>
        </div>
        <div class="defense-card">
          <div class="defense-header">
            <span class="defense-icon">🌍</span>
            <div>
              <h4>Enable in All Regions</h4>
              <p>GuardDuty must be enabled per-region - ensure coverage everywhere.</p>
              <pre><code>for region in $(aws ec2 describe-regions --query 'Regions[].RegionName' --output text); do
  aws guardduty create-detector --enable --region $region
done</code></pre>
            </div>
          </div>
        </div>
        <div class="defense-card">
          <div class="defense-header">
            <span class="defense-icon">🎯</span>
            <div>
              <h4>Configure Threat Intel Feeds</h4>
              <p>Add custom threat IP lists for your industry or known adversaries.</p>

            </div>
          </div>
        </div></div></div>

<!-- Footer -->
<div class="footer">
  <p>AWS GuardDuty Security Card</p>
  <p style="margin-top:0.25rem;">Always obtain proper authorization before testing</p>
</div>

</body>
</html>