Analytics BIOC
Informational
✕
First-time attachment exchange
Detects when an attachment is sent between individuals for the first time in 30 days.
- Module:
- Email Security
- Licensed by:
- Email Security
- Data source:
- Microsoft 365 Emails
ATT&CK tactics: Execution (TA0002) Credential Access (TA0006)
ATT&CK techniques: User Execution (T1204) Brute Force: Password Cracking (T1110.002)
Detector tags: Phishing
Attacker's goals:
Trick the user on clicking the link or opening attachments, 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. Scrutinize the attachments for any suspicious indications or malicious content. Check if the attachments have been seen before in the organization. Monitor further actions taken, such as file downloads or execution of attachment content.
- Test period:
- N/A (single event)
- Deduplication:
- 1 Hour 30 Minutes