SOC Alert Analysis Report ID 1009

1. Alert Overview
Alert ID: 1009
Analyst: Gabriel Sanchez
Date & Time: March 26, 2025, at 16:35:52.166
Severity Level: Medium

2. Who
Involved Entities:

3. What
Incident Type: Outbound Email to a Suspicious Domain
Description:
An employee replied to a suspicious sender with an unusual top-level domain. The email’s subject was “Unlock Ancient Hat Secrets with This Ancient Pyramid Scheme.” No attachments were included. The email content was removed in accordance with privacy regulations and company security policies to protect sensitive information.

4. When
Timestamp: March 26, 2025, at 16:35:52.166

5. Where
Data Source: Email logs

6. Why
Root Cause Analysis:
The detection rule for identifying suspicious outbound emails needs further fine-tuning. The email was not flagged initially due to inadequate filtering criteria for unusual top-level domains.

7. Investigation Steps

  • Reviewed email logs and identified the sender and recipient
  • Assessed whether the recipient domain is linked to any known phishing or malicious campaigns
  • Checked for any prior interactions between the sender and recipient
  • Verified if similar alerts have been triggered in the past

8. Mitigation

  • Reported the domain for further analysis and possible blocklisting
  • Advised security awareness training for the sender
  • Recommended fine-tuning of the detection rule to enhance accuracy

9. Conclusion
The incident was contained, and no immediate impact was detected. Adjustments to the detection rule will be implemented to prevent similar occurrences in the future.