Email containing a link with an IP address convention was detected

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	Microsoft 365 Emails
Detection Modules	Email
Detector Tags	Malicious URLs
ATT&CK Tactic	Stealth (TA0005), Execution (TA0002)
ATT&CK Technique	Masquerading (T1036), User Execution (T1204)
Severity	Informational

Description

A link with IP address convention was detected within the email body.

Attacker's Goals

Trick the user into clicking the link, while avoiding detection.

Investigative actions

• Examine the sender's IP address and reputation.
• Verify whether the sender's IP address has appeared in different log sources before, and if it is recognizable.
• 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.