Sublime Core Feed

This repo contains open-source Rules for Sublime, a free and open platform for detecting and preventing email attacks like BEC, malware, and credential phishing.

Sublime Security

Last updated Oct 23rd, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Abuse: Robinhood injected content	Sublime Security	5mo ago Apr 30th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis HTML analysis Sender analysis
Advance Fee Fraud (AFF) from freemail provider or suspicious TLD	Sublime Security	4mo ago Jun 15th, 2026	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis
AnonymousFox indicators	Sublime Security	2mo ago Aug 5th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Header analysis Sender analysis
Attachment: Adobe image lure in body or attachment with suspicious link	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Image as content Impersonation: Brand Content analysis Computer Vision Optical Character Recognition Sender analysis URL analysis
Attachment: Any HTML file (unsolicited)	Sublime Security	11mo ago Nov 3rd, 2025	HTML smuggling File analysis HTML analysis Sender analysis
Attachment: Any HTML file (untrusted sender)	Sublime Security	11mo ago Nov 3rd, 2025	HTML smuggling HTML analysis Sender analysis
Attachment: Any .sap file (unsolicited)	Sublime Security	1mo ago Sep 23rd, 2026	Malware/Ransomware Evasion Scripting File analysis Header analysis Sender analysis
Attachment: Callback phishing solicitation via image file	@vector_sec	27d ago Sep 28th, 2026	Callback Phishing Evasion Free email provider Out of band pivot Social engineering Image as content Content analysis Optical Character Recognition Sender analysis URL analysis Computer Vision
Attachment: Callback phishing solicitation via pdf file	Sublime Security	27d ago Sep 28th, 2026	Callback Phishing Evasion Free email provider Out of band pivot PDF Social engineering Exif analysis File analysis Optical Character Recognition Sender analysis
Attachment: Callback phishing solicitation via text-based file	Sublime Security	27d ago Sep 28th, 2026	Callback Phishing Evasion Out of band pivot Social engineering Content analysis File analysis Header analysis Sender analysis
Attachment: Compensation review lure with QR code	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing PDF QR code Social engineering File analysis Optical Character Recognition QR code analysis Natural Language Understanding Sender analysis Header analysis
Attachment: DocuSign impersonation via PDF linking to new domain	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand PDF Social engineering Header analysis Sender analysis URL analysis File analysis Computer Vision Whois
Attachment: Double base64-encoded zip file in HTML smuggling attachment	@ajpc500	6mo ago Apr 27th, 2026	Malware/Ransomware Credential Phishing Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Sender analysis
Attachment: Dropbox image lure with no Dropbox domains in links	Sublime Security	1y ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Optical Character Recognition Sender analysis
Attachment: Embedded Javascript in SVG file	Sublime Security	27d ago Sep 28th, 2026	Malware/Ransomware Scripting Archive analysis File analysis Sender analysis XML analysis
Attachment: EML containing a base64 encoded script	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Evasion HTML smuggling Scripting Social engineering File analysis HTML analysis Sender analysis
Attachment: EML file contains HTML attachment with login portal indicators	Sublime Security	4mo ago Jun 5th, 2026	Credential Phishing Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Javascript analysis Sender analysis
Attachment: EML file with HTML attachment (unsolicited)	Sublime Security	2d ago Oct 23rd, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Sender analysis
Attachment: EML with embedded Javascript in SVG file	Sublime Security	1y ago Aug 8th, 2025	Credential Phishing Malware/Ransomware Scripting Evasion File analysis Javascript analysis Sender analysis
Attachment: EML with Sharepoint link likely unrelated to sender	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Evasion File analysis URL analysis Header analysis Sender analysis
Attachment: Emotet heavily padded doc in zip file	Sublime Security	1y ago Jul 16th, 2025	Malware/Ransomware Evasion Archive analysis Content analysis Exif analysis File analysis Sender analysis
Attachment: Encrypted Microsoft Office file (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Encryption Macros Scripting Archive analysis File analysis OLE analysis Sender analysis
Attachment: Encrypted PDF with credential theft body	Sublime Security	17d ago Oct 8th, 2026	Credential Phishing Encryption Evasion PDF Social engineering Content analysis Exif analysis File analysis Natural Language Understanding Sender analysis
Attachment: Encrypted PDF with credential theft language in EML	Sublime Security	1mo ago Sep 4th, 2026	Credential Phishing Encryption Evasion PDF Social engineering Content analysis Exif analysis File analysis Natural Language Understanding Sender analysis
Attachment: Fake email body embedded in inline image	Sublime Security	20d ago Oct 5th, 2026	Credential Phishing Image as content Social engineering Evasion Optical Character Recognition Natural Language Understanding HTML analysis Header analysis Sender analysis
Attachment: Fake scan-to-email	Sublime Security	1y ago Sep 22nd, 2025	Credential Phishing Free file host Image as content PDF Social engineering Content analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis
Attachment: Fake secure message and suspicious indicators	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Image as content Impersonation: Brand Social engineering Content analysis File analysis Header analysis Natural Language Understanding Sender analysis
Attachment: File execution via Javascript	Sublime Security	6mo ago Apr 27th, 2026	Malware/Ransomware Evasion Scripting Archive analysis File analysis Javascript analysis Sender analysis
Attachment: HTML attachment with login portal indicators	@ajpc500	1mo ago Sep 23rd, 2026	Credential Phishing HTML smuggling Scripting Archive analysis File analysis HTML analysis Javascript analysis Sender analysis
Attachment: HTML smuggling Microsoft sign in	Sublime Security	6mo ago Apr 27th, 2026	Credential Phishing Free subdomain host HTML smuggling Impersonation: Brand Social engineering Archive analysis Content analysis File analysis Header analysis Javascript analysis Sender analysis URL analysis
Attachment: HTML smuggling - QR Code with suspicious links	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing QR code Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot
Attachment: HTML smuggling with atob and high entropy	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
Attachment: HTML smuggling with atob and high entropy via calendar invite	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling ICS Phishing Scripting File analysis HTML analysis Javascript analysis Sender analysis
Attachment: HTML smuggling with auto-downloaded file	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
Attachment: HTML smuggling with embedded base64-encoded ISO	Sublime Security	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling ISO Archive analysis Content analysis File analysis HTML analysis Sender analysis
Attachment: HTML with emoji-to-character map	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion HTML smuggling Impersonation: Brand Scripting Social engineering File analysis HTML analysis Javascript analysis Sender analysis
Attachment: ICS calendar invite hiding credential theft	Sublime Security	27d ago Sep 28th, 2026	Credential Phishing Social engineering Evasion ICS Phishing File analysis Content analysis Natural Language Understanding Header analysis Sender analysis
Attachment: ICS calendar invite with photo/file share lure	Sublime Security	1mo ago Sep 9th, 2026	Credential Phishing Free email provider Social engineering Open redirect Image as content File analysis Natural Language Understanding Content analysis URL analysis Sender analysis Header analysis
Attachment: ICS calendar with embedded file from internal sender with SPF failure	Sublime Security	5mo ago Apr 28th, 2026	Credential Phishing Spoofing Evasion ICS Phishing File analysis Header analysis Sender analysis
Attachment: ICS invite meeting lure	Sublime Security	27d ago Sep 28th, 2026	Credential Phishing Social engineering Impersonation: Brand Spoofing Open redirect ICS Phishing Content analysis URL analysis Header analysis Sender analysis File analysis
Attachment: ICS with embedded Javascript in SVG file	Sublime Security	5mo ago Apr 28th, 2026	Credential Phishing Malware/Ransomware Scripting Evasion ICS Phishing File analysis Javascript analysis Sender analysis
Attachment: Microsoft 365 credential phishing	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Optical Character Recognition Sender analysis
Attachment: Microsoft impersonation via PDF with link and suspicious language	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware Image as content Impersonation: Brand PDF Scripting Social engineering Computer Vision File analysis Header analysis Natural Language Understanding Sender analysis
Attachment: Mobileconfig profile with mismatched embedded email	Sublime Security	26d ago Sep 29th, 2026	Credential Phishing Evasion Social engineering File analysis Content analysis Sender analysis
Attachment: Office document with VSTO add-in	@vector_sec	9mo ago Jan 12th, 2026	Malware/Ransomware Scripting Archive analysis Content analysis Exif analysis File analysis Sender analysis URL analysis
Attachment: OLE external relationship containing file scheme link to executable filetype	Sublime Security	11mo ago Nov 24th, 2025	Malware/Ransomware Evasion Archive analysis Content analysis OLE analysis Sender analysis
Attachment: OLE external relationship containing file scheme link to IP address	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Evasion Archive analysis Content analysis OLE analysis Sender analysis
Attachment: Oversized guest-list calendar invite with purchase order lure	Sublime Security	27d ago Sep 28th, 2026	BEC/Fraud Social engineering Impersonation: Brand ICS Phishing File analysis Content analysis Natural Language Understanding Sender analysis Header analysis
Attachment: Oversized guest-list calendar invite with voicemail lure	Sublime Security	27d ago Sep 28th, 2026	BEC/Fraud Social engineering Impersonation: Brand ICS Phishing File analysis Content analysis Natural Language Understanding Sender analysis Header analysis
Attachment: PDF document portal credential theft lure	Sublime Security	1mo ago Sep 18th, 2026	Credential Phishing PDF Social engineering File analysis Content analysis Natural Language Understanding Header analysis Sender analysis

786 Rules

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