Synopsis
Activation Period |
14 Days |
Training Period |
30 Days |
Test Period |
N/A (single event) |
Deduplication Period |
1 Day |
Required Data |
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Detection Modules |
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Detector Tags |
Employee Impersonation, Spear Phishing |
ATT&CK Tactic |
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ATT&CK Technique |
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Severity |
Informational |
Description
An external sender is possibly impersonating an employee by spoofing the company's internal address.
Attacker's Goals
- Get credentials for internal systems.
- Executing financial transfers from the company to the attacker's account.
- Extracting information outside the company.
- Encrypting critical information and demanding a ransom.
Investigative actions
- Check the received header path, especially the sender host.
- Check DMARC, SPF AND DKIM authentication results.
- Verify whether the sender's IP address has appeared in different log sources before and its reputation.
- If the message contains attachments or links, scrutinize them for any suspicious indications.
- Monitor further actions taken, such as file downloads or access to potentially malicious links.