Email marked as spam and bulk based on Spam Confidence Level and Bulk Complaint Level values

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	Spam
ATT&CK Tactic	Reconnaissance (TA0043), Initial Access (TA0001)
ATT&CK Technique	Phishing for Information (T1598), Phishing (T1566)
Severity	Informational

Description

The Spam Confidence Level (SCL) and Bulk Complaint Level (BCL) values, detected in the email's antispam headers, indicate that a message is more likely to be spam.

Attacker's Goals

Achieve financial gain, distribute malware, or phish for sensitive information through mass unsolicited emails.

Investigative actions

• Examine email headers to trace origins and check for signs of spoofing.
• Analyze the email content for spam indicators like suspicious links and aggressive marketing language.
• Monitor further actions taken, such as file downloads or access to potentially malicious links.

Variations

Email with high Spam Confidence Level and Bulk Complaint Level values

Synopsis

Field	Value
ATT&CK Tactic	Reconnaissance (TA0043), Initial Access (TA0001)
ATT&CK Technique	Phishing for Information (T1598), Phishing (T1566)
Severity	Informational

Description

The Spam Confidence Level (SCL) and Bulk Complaint Level (BCL) values, detected in the email's antispam headers, indicate that a message is more likely to be spam.

Attacker's Goals

Achieve financial gain, distribute malware, or phish for sensitive information through mass unsolicited emails.

Investigative actions

• Examine email headers to trace origins and check for signs of spoofing.
• Analyze the email content for spam indicators like suspicious links and aggressive marketing language.
• Monitor further actions taken, such as file downloads or access to potentially malicious links.

Email with high Spam Confidence Level or Bulk Complaint Level values

Synopsis

Field	Value
ATT&CK Tactic	Reconnaissance (TA0043), Initial Access (TA0001)
ATT&CK Technique	Phishing for Information (T1598), Phishing (T1566)
Severity	Informational

Description

The Spam Confidence Level (SCL) and Bulk Complaint Level (BCL) values, detected in the email's antispam headers, indicate that a message is more likely to be spam.

Attacker's Goals

Achieve financial gain, distribute malware, or phish for sensitive information through mass unsolicited emails.

Investigative actions

• Examine email headers to trace origins and check for signs of spoofing.
• Analyze the email content for spam indicators like suspicious links and aggressive marketing language.
• Monitor further actions taken, such as file downloads or access to potentially malicious links.

Email with medium Spam Confidence Level and Bulk Complaint Level values

Synopsis

Field	Value
ATT&CK Tactic	Reconnaissance (TA0043), Initial Access (TA0001)
ATT&CK Technique	Phishing for Information (T1598), Phishing (T1566)
Severity	Informational

Description

The Spam Confidence Level (SCL) and Bulk Complaint Level (BCL) values, detected in the email's antispam headers, indicate that a message is more likely to be spam.

Attacker's Goals

Achieve financial gain, distribute malware, or phish for sensitive information through mass unsolicited emails.

Investigative actions

• Examine email headers to trace origins and check for signs of spoofing.
• Analyze the email content for spam indicators like suspicious links and aggressive marketing language.
• Monitor further actions taken, such as file downloads or access to potentially malicious links.

Email with medium Spam Confidence Level or Bulk Complaint Level values

Synopsis

Field	Value
ATT&CK Tactic	Reconnaissance (TA0043), Initial Access (TA0001)
ATT&CK Technique	Phishing for Information (T1598), Phishing (T1566)
Severity	Informational

Description

The Spam Confidence Level (SCL) and Bulk Complaint Level (BCL) values, detected in the email's antispam headers, indicate that a message is more likely to be spam.

Attacker's Goals

Achieve financial gain, distribute malware, or phish for sensitive information through mass unsolicited emails.

Investigative actions

• Examine email headers to trace origins and check for signs of spoofing.
• Analyze the email content for spam indicators like suspicious links and aggressive marketing language.
• Monitor further actions taken, such as file downloads or access to potentially malicious links.