High Severity
Suspicious VBA macros from untrusted sender
Description
Detects any VBA macro attachment that scores above a medium confidence threshold in the Sublime Macro Classifier.
References
No references.
Sublime Security
Created Aug 17th, 2023 • Last updated Jul 16th, 2025
Feed Source
Sublime Core Feed
Source
type.inbound
and any(attachments,
(
.file_extension in~ $file_extensions_macros
or (
.file_extension is null
and .file_type == "unknown"
and .content_type == "application/octet-stream"
and .size < 100000000
)
)
and ml.macro_classifier(.).malicious
and ml.macro_classifier(.).confidence in ("high")
)
and (
profile.by_sender().prevalence in ("new", "outlier")
or (
profile.by_sender().any_messages_malicious_or_spam
and not profile.by_sender().any_messages_benign
)
)
Playground
Test against your own EMLs or sample data.