High Severity

Attachment: TAR file with RAR type

Labels

Malware/Ransomware
Evasion
Archive analysis
File analysis

Description

Detects messages with TAR file extensions that are actually RAR file types. This mismatch between file extension and actual file type may indicate an evasion technique.

References

No references.

Sublime Security
Created Apr 24th, 2026 • Last updated Apr 24th, 2026
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and any(attachments, .file_extension =~ "tar" and .file_type =~ "rar")
MQL Rule Console
•Docs•Learning Labs

Playground

Test against your own EMLs or sample data.

Share

Post about this on your socials.

Get Started. Today.

Managed or self-managed. No MX changes.

Get Started
Deploy and integrate a free Sublime instance in minutes.
Get Started