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 Apr 24th, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: Excel file with document sharing lure created by Go Excelize	Sublime Security	2mo ago Jan 29th, 2026	Credential Phishing Macros Social engineering File analysis Macro analysis Content analysis Exif analysis
Attachment: Excel file with suspicious template identifier	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Macros Exif analysis File analysis
Attachment: Excel Web Query File (IQY)	@jkcoote	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion Archive analysis File analysis
Attachment: Fake attachment image lure	Sublime Security	7mo ago Sep 22nd, 2025	Credential Phishing Malware/Ransomware Evasion Image as content Social engineering File analysis Natural Language Understanding Optical Character Recognition
Attachment: Fake lawyer & sports agent identities	Sublime Security	2mo ago Jan 26th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Exif analysis File analysis Optical Character Recognition
Attachment: Fake scan-to-email	Sublime Security	7mo 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	3mo ago Jan 12th, 2026	Credential Phishing Image as content Impersonation: Brand Social engineering Content analysis File analysis Header analysis Natural Language Understanding Sender analysis
Attachment: Fake Slack installer	Sublime Security	3y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis
Attachment: Fake voicemail via PDF	Sublime Security	10d ago Apr 14th, 2026	Credential Phishing PDF QR code Social engineering Computer Vision Content analysis File analysis Optical Character Recognition QR code analysis URL analysis
Attachment: Fake Zoom installer	Sublime Security	3y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis
Attachment: Fictitious invoice using LinkedIn's address	Sublime Security	7mo ago Sep 3rd, 2025	BEC/Fraud PDF Social engineering File analysis Optical Character Recognition Natural Language Understanding Content analysis Exif analysis
Attachment: File execution via Javascript	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Scripting Archive analysis File analysis Javascript analysis Sender analysis
Attachment: Filename containing Unicode braille pattern blank character	@vector_sec	8mo ago Aug 5th, 2025	Malware/Ransomware Evasion Archive analysis File analysis
Attachment: Filename containing Unicode right-to-left override character	@vector_sec	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Archive analysis File analysis
Attachment: Finance themed PDF with observed phishing template	Sublime Security	1mo ago Mar 2nd, 2026	Credential Phishing PDF Evasion File analysis Content analysis
Attachment: HTML attachment with Javascript location	@vector_sec	8mo ago Aug 5th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis
Attachment: HTML attachment with login portal indicators	@ajpc500	3mo ago Jan 12th, 2026	Credential Phishing HTML smuggling Scripting Archive analysis File analysis HTML analysis Javascript analysis Sender analysis
Attachment: HTML file contains exclusively Javascript	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis File analysis
Attachment: HTML file with excessive 'const' declarations and abnormally long timeouts	Sublime Security	5mo ago Nov 3rd, 2025	Malware/Ransomware Credential Phishing HTML smuggling Scripting Evasion HTML analysis File analysis Content analysis
Attachment: HTML file with excessive padding and suspicious patterns	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling File analysis HTML analysis YARA
Attachment: HTML file with reference to recipient and suspicious patterns	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing HTML smuggling Scripting Content analysis File analysis HTML analysis Javascript analysis YARA
Attachment: HTML smuggling 'body onload' linking to suspicious destination	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis URL analysis
Attachment: HTML smuggling 'body onload' with high entropy and suspicious text	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis
Attachment: HTML smuggling Microsoft sign in	Sublime Security	3mo ago Jan 12th, 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 with atob and high entropy	Sublime Security	3mo 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 atob and high entropy via calendar invite	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting File analysis HTML analysis Javascript analysis Sender analysis
Attachment: HTML smuggling with auto-downloaded file	Sublime Security	3mo 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 base64 encoded JavaScript function	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with base64 encoded ZIP file	Sublime Security	5mo ago Nov 20th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with concatenation obfuscation	@vector_sec	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis
Attachment: HTML smuggling with decimal encoding	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis
Attachment: HTML smuggling with embedded base64-encoded executable	Sublime Security	2y ago Mar 25th, 2024	Malware/Ransomware Evasion HTML smuggling Archive analysis File analysis HTML analysis YARA
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 smuggling with embedded base64 streamed file download	Sublime Security	3y ago Aug 21st, 2023	Malware/Ransomware HTML smuggling Scripting Social engineering Archive analysis Content analysis File analysis HTML analysis
Attachment: HTML smuggling with eval and atob	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with eval and atob via calendar invite	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with excessive line break obfuscation	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with excessive string concatenation and suspicious patterns	Sublime Security	2y ago Aug 27th, 2024	Credential Phishing Evasion HTML smuggling Scripting Social engineering File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with fromCharCode and other signals	Sublime Security	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis
Attachment: HTML smuggling with hex strings	@ajpc500	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with high entropy and other signals	Sublime Security	3y ago Aug 21st, 2023	Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis
Attachment: HTML smuggling with raw array buffer	Sublime Security	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion Free subdomain host HTML smuggling Archive analysis Content analysis File analysis Javascript analysis
Attachment: HTML smuggling with RC4 decryption	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with ROT13	@Kyle_Parrish_	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis
Attachment: HTML smuggling with setTimeout	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis
Attachment: HTML smuggling with unescape	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis File analysis HTML analysis Javascript analysis
Attachment: HTML with emoji-to-character map	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing Evasion HTML smuggling Impersonation: Brand Scripting Social engineering File analysis HTML analysis Javascript analysis Sender analysis
Attachment: HTML with hidden body	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Scripting Content analysis HTML analysis File analysis
Attachment: HTML with JavaScript functions for HTTP requests	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing Evasion Scripting Content analysis HTML analysis Javascript analysis File analysis
Attachment: HTML with obfuscation and recipient's email in JavaScript strings	Sublime Security	7mo ago Sep 25th, 2025	Credential Phishing HTML smuggling Scripting Archive analysis File analysis HTML analysis Javascript analysis

263 Rules

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