Detection Method: YARA

YARA detection scans email messages, attachments, and extracted content for known malware, phishing patterns, or suspicious code. This detection method uses the YARA pattern matching language, which lets your security team create specific signatures based on known malicious patterns, both textual and binary.
YARA detection can identify:
  • Known malware families based on their distinctive code patterns
  • Obfuscated scripts or executables using encoding techniques
  • Common phishing templates with structural similarities
  • Suspicious binary patterns that may indicate malicious functionality
  • Custom threats targeting specific organizations with tailored YARA rules
Rule Name & Severity
Last Updated
Author
Types, Tactics & Capabilities
Attachment: PDF with EOF MD5 hash marker
6d ago
Sep 10th, 2026
Sublime Security
Attachment: PDF RFP lure
13d ago
Sep 3rd, 2026
Sublime Security
Attachment: Gzip-archived with nested HTML file containing image and button link
13d ago
Sep 3rd, 2026
Sublime Security
Attachment: GZ archive with credential theft content
14d ago
Sep 2nd, 2026
Sublime Security
Attachment: ZIP filename mismatch
16d ago
Aug 31st, 2026
Sublime Security
Attachment: ZIP containing Office binary with embedded DLL
23d ago
Aug 24th, 2026
Sublime Security
Attachment: QuickBooks PDF lure
27d ago
Aug 20th, 2026
Sublime Security
Attachment: PDF with embedded box-lure and javascript
28d ago
Aug 19th, 2026
Sublime Security
Attachment: PDF templated investment lure
28d ago
Aug 19th, 2026
Sublime Security
Attachment: PDF with base64 JavaScript and eval functions
1mo ago
Aug 11th, 2026
Sublime Security
Attachment: PDF with secure document acknowledgment prompt
2mo ago
Jul 17th, 2026
Sublime Security
Attachment: PDF with suspicious document view lure
2mo ago
Jul 14th, 2026
Sublime Security
Attachment: PDF with specific W-9 lure
2mo ago
Jul 1st, 2026
Sublime Security
Attachment: PDF with quote lure
2mo ago
Jul 1st, 2026
Sublime Security
Attachment: PDF with W-9 form indicators
2mo ago
Jun 26th, 2026
Sublime Security
Attachment: Malicious zip file matching zipline campaign
2mo ago
Jun 25th, 2026
Sublime Security
Attachment: DOCX with malicious document template artifacts
2mo ago
Jun 25th, 2026
Sublime Security
Attachment: Fake PDF Invoices Yara
3mo ago
Jun 16th, 2026
Sublime Security
Attachment: PDF with fake invoice using suspicious font sizing
3mo ago
Jun 9th, 2026
Sublime Security
Attachment: Encrypted PDF With Credential Harvesting Indicators
3mo ago
Jun 5th, 2026
Sublime Security