Detect DNS obfuscation using @ symbol

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One of the tricks used in phishing is obfuscating the domain name in a URL by using the @ symbol. This technique goes all the way back to the original RFC for URLs, RFC 1738. When you specify an @ in the DNS portion of a URL it denotes that the left side of the DNS name holds a username and password for authentication to the server on the right side of the @ sign. Unfortunately, an attacker can use this technique to trick a user by formatting the URL as http://www.trusteddomain.com@www.realdo

Attribute Value
Type Hunting Query
Solution GitHub Only
ID e3331ef7-805f-4137-a8e1-1df59e822383
Required Connectors MicrosoftThreatProtection
Source View on GitHub

Tables Used

This content item queries data from the following tables:

Table Transformations Ingestion API Lake-Only
EmailUrlInfo ?

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