Medium Severity
Attachment with auto-opening VBA macro (unsolicited)
Description
Recursively scans files and archives to detect embedded VBA files with an auto open exec.
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 in~ $file_extensions_common_archives
or (
.file_extension is null
and .file_type == "unknown"
and .content_type == "application/octet-stream"
and .size < 100000000
)
)
and any(file.explode(.), any(.scan.vba.auto_exec, . == "AutoOpen"))
)
and (
not profile.by_sender().solicited
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.