Attachment: Encrypted Microsoft Office file (unsolicited)
Encrypted OLE2 (eg Microsoft Office) attachment from an unsolicited sender. Attachment encryption is a common technique used to bypass malware scanning products.
Use if receiving encrypted attachments is not normal behavior in your environment.
type.inbound and any(attachments, .file_extension in~ $file_extensions_macros and file.oletools(.).indicators.encryption.exists ) and ( not profile.by_sender().solicited or ( profile.by_sender().any_messages_malicious_or_spam and not profile.by_sender().any_false_positives ) )
Test against your own EMLs or sample data.
Get Started. Today.
Managed or self-managed. No MX changes.