Uncommon URL domain(s) in your organization detected in email

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	Initial Access (TA0001), Execution (TA0002)
ATT&CK Technique	Phishing (T1566), User Execution (T1204)
Severity	Informational

Description

We have identified unpopular domain(s) in URL(s) within this email.

Attacker's Goals

Trick the user into engaging with a URL(s), aiming to extract information or establish access to the network.

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.

Variations

External email with a first-seen URL domain(s) in your organization in the last 30 days

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001), Execution (TA0002)
ATT&CK Technique	Phishing (T1566), User Execution (T1204)
Severity	Informational

Description

We have identified unpopular domain(s) in URL(s) within this email.

Attacker's Goals

Trick the user into engaging with a URL(s), aiming to extract information or establish access to the network.

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.

Internal email with a first-seen URL domain(s) in your organization in the last 30 days

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001), Execution (TA0002)
ATT&CK Technique	Phishing (T1566), User Execution (T1204)
Severity	Informational

Description

We have identified unpopular domain(s) in URL(s) within this email.

Attacker's Goals

Trick the user into engaging with a URL(s), aiming to extract information or establish access to the network.

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.

Outbound email with a first-seen URL domain(s) in your organization in the last 30 days

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001), Execution (TA0002)
ATT&CK Technique	Phishing (T1566), User Execution (T1204)
Severity	Informational

Description

We have identified unpopular domain(s) in URL(s) within this email.

Attacker's Goals

Trick the user into engaging with a URL(s), aiming to extract information or establish access to the network.

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.