Critical Windows Event IDs for Detecting Malware Attacks

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Monitoring Windows event IDs is essential for cybersecurity as it provides a detailed audit trail of system activities, enabling the detection of security breaches and malicious behavior. By analyzing event logs, security teams can identify unauthorized access, malware activity, and other threats. Below are critical Windows Event Log IDs that indicate potential malware attacks.

Key Windows Event IDs to Monitor

Shadow Copy Manipulation

  • Event ID 32: Unexpected deletion of shadow copies (often used by ransomware).
  • Event IDs 5857 & 5858: Malicious deletion or resizing of shadow copies via wmic.

Logon Activities

  • Event ID 4624 (Successful Logon): Tracks legitimate user access.
  • Event ID 4625 (Failed Logon): Indicates brute-force or intrusion attempts.
  • Event ID 4648 (Explicit Credential Logon): Suggests pass-the-hash attacks.

Privilege Escalation & Lateral Movement

  • Event ID 4672 (Privileges Assigned to New Logon): May indicate privilege escalation.
  • Event ID 4670 (Object Access): Tracks ACL changes (common in lateral movement).

Process & Malware Detection

  • Event ID 4688 (New Process): Logs new processes (useful for detecting malware execution).
  • Event IDs 1116 & 1117: Windows Defender malware detection logs.

Kerberos & Authentication Failures

  • Event IDs 4740, 4771, 4776: Failed Kerberos authentication attempts.

Network & Firewall Logs

  • Event IDs 5152, 5153, 5155, 5157: Windows Filtering Platform (WFP) blocked traffic.

Log Tampering & Policy Changes

  • Event IDs 104, 1102: Log clearing (common post-exploitation).
  • Event ID 4719 (System Audit Policy Change): Unauthorized audit policy modifications.

You Should Know: Practical Commands & Steps

1. Extracting Event Logs via PowerShell

 Get all security logs with a specific Event ID 
Get-WinEvent -LogName Security | Where-Object { $_.Id -eq 4625 }

Export logs to CSV for analysis 
Get-WinEvent -LogName Security -MaxEvents 1000 | Export-Csv -Path "SecurityLogs.csv"

2. Monitoring Suspicious Processes

 Continuously monitor new processes 
Get-WinEvent -LogName "Microsoft-Windows-Sysmon/Operational" | Where-Object { $_.Id -eq 1 }

3. Detecting Ransomware (Shadow Copy Deletion)

wmic shadowcopy delete

Defense:

 Disable shadow copy deletion via Group Policy 
gpedit.msc → Computer Config → Windows Settings → Security Settings → Local Policies → Audit Policy

4. Analyzing Failed Logons (Brute-Force Attacks)

 Count failed logins by IP 
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4625} | Group-Object -Property {$_.Properties[bash].Value}

5. Detecting Pass-the-Hash Attacks

 Check for explicit credential logons 
Get-WinEvent -FilterHashtable @{LogName='Security'; ID=4648}

6. Blocking Malicious Traffic via Windows Firewall

 Block an IP address 
New-NetFirewallRule -DisplayName "Block Malicious IP" -Direction Inbound -RemoteAddress 192.168.1.100 -Action Block

7. Enabling Advanced Auditing

auditpol /set /subcategory:"Process Creation" /success:enable /failure:enable

What Undercode Say

Windows Event Logs are a goldmine for detecting cyber threats. By automating log analysis with PowerShell and SIEM tools, defenders can proactively identify attacks. Key takeaways:
– Monitor Event IDs 4688, 4625, 4648 for process and logon anomalies.
– Use `wmic` and `auditpol` to track ransomware and policy changes.
– Block malicious IPs via Windows Firewall (New-NetFirewallRule).
– Enable Sysmon for deeper process tracking.

For further reading:

Expected Output

A structured cybersecurity report detailing critical Windows Event IDs, PowerShell commands for log analysis, and defensive measures against malware.

Prediction

As ransomware and lateral movement attacks evolve, automated Windows Event Log monitoring will become indispensable for enterprise security. AI-driven SIEM solutions will increasingly correlate these logs for real-time threat detection.

References:

Reported By: Charlescrampton Monitoring – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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