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
Anthropic Magic String in HTML	Sublime Security	8mo ago Feb 9th, 2026	Malware/Ransomware Exploit Content 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: Base64 encoded bash command in filename	@vector_sec	1y ago Sep 5th, 2025	Malware/Ransomware Encryption Evasion Archive analysis File analysis Content analysis
Attachment: Calendar file with invisible Unicode characters	Sublime Security	5mo ago Apr 28th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Evasion ICS Phishing File analysis Content analysis
Attachment: Calendar invite from excessive self-reply sender	Sublime Security	18d ago Oct 7th, 2026	Spam Social engineering File analysis Header analysis Content analysis
Attachment: Calendar invite with suspicious link leading to an open redirect	Sublime Security	27d ago Sep 28th, 2026	Spam Free email provider Free file host Free subdomain host ICS Phishing Open redirect Content analysis URL 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 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: Cold outreach with invitation subject and not attachment	Sublime Security	6mo ago Apr 3rd, 2026	Spam Social engineering Image as content Content analysis Natural Language Understanding File analysis
Attachment: Compensation-themed DOCX with QR code credential theft	Sublime Security	4mo ago May 29th, 2026	Credential Phishing QR code Social engineering Impersonation: Brand File analysis Optical Character Recognition QR code analysis Natural Language Understanding Exif analysis Content analysis
Attachment: Credit card application with WhatsApp contact	Sublime Security	11mo ago Nov 20th, 2025	BEC/Fraud Social engineering Out of band pivot Content analysis File analysis Natural Language Understanding QR code analysis
Attachment: CVE-2021-40444 - MSHTML Remote Code Execution Vulnerability	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Exploit Macros Scripting Archive analysis Content analysis File analysis Macro analysis OLE analysis
Attachment: CVE-2023-21716 - Microsoft Office Remote Code Execution Vulnerability	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Exploit Content analysis File analysis
Attachment: CVE-2025-24071 - Microsoft Windows File Explorer Spoofing Vulnerability	Sublime Security	1y ago Mar 21st, 2025	Credential Phishing Scripting Macros Exploit Archive analysis Content analysis File analysis
Attachment: Decoy PDF author (Julie P.)	Sublime Security	5mo ago Apr 29th, 2026	Credential Phishing Impersonation: Brand PDF File analysis Content analysis
Attachment: DocX embedded binary	Sublime Security	1y ago Aug 5th, 2025	Malware/Ransomware Evasion Archive analysis Content analysis YARA
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: Duplicated header pages in fraudulent multi-page PDF Request for Quotation	Sublime Security	4mo ago Jun 25th, 2026	BEC/Fraud PDF Social engineering Optical Character Recognition Content analysis File analysis
Attachment: Embedded MSG file with payment lure and newly registered domain	Sublime Security	30d ago Sep 25th, 2026	BEC/Fraud Social engineering Evasion File analysis Content analysis URL analysis Whois Natural Language Understanding
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 link to credential phishing page	Sublime Security	2mo ago Jul 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host Social engineering Computer Vision Content analysis File analysis Header analysis HTML analysis Natural Language Understanding Optical Character Recognition URL analysis URL screenshot
Attachment: EML with SharePoint files shared from GoDaddy federated tenants	Sublime Security	1y ago Sep 23rd, 2025	Credential Phishing Evasion Impersonation: Brand Social engineering File analysis URL analysis Content analysis
Attachment: EML with suspicious indicators	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion HTML smuggling Social engineering Content analysis File 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: Employment contract update with suspicious file naming	Sublime Security	8mo ago Jan 28th, 2026	Malware/Ransomware Evasion Social engineering Content analysis File analysis
Attachment: Encrypted PDF with credential phishing link	Sublime Security	17d ago Oct 8th, 2026	Credential Phishing PDF Encryption Evasion Social engineering File analysis Content analysis Whois URL analysis Natural Language Understanding
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: Encrypted zip file with payment-related lure	Sublime Security	11mo ago Nov 25th, 2025	BEC/Fraud Malware/Ransomware Encryption Evasion Social engineering Archive analysis Content analysis File analysis
Attachment: Excel file with document sharing lure created by Go Excelize	Sublime Security	8mo ago Jan 29th, 2026	Credential Phishing Macros Social engineering File analysis Macro analysis Content analysis Exif analysis
Attachment: Excel file with hyperlinks to suspicious domains	Sublime Security	19d ago Oct 6th, 2026	BEC/Fraud Credential Phishing Free file host Free subdomain host Social engineering Natural Language Understanding Content analysis Exif analysis File analysis URL analysis
Attachment: Fake lawyer & sports agent identities	Sublime Security	9mo ago Jan 26th, 2026	BEC/Fraud Impersonation: VIP Social engineering Content analysis Exif analysis File analysis Optical Character Recognition
Attachment: Fake mobileconfig security update profile	Sublime Security	30d ago Sep 25th, 2026	Credential Phishing Impersonation: Brand Social engineering Evasion File analysis Content analysis XML analysis
Attachment: Fake PDF Invoices Yara	Sublime Security	4mo ago Jun 16th, 2026	Malware/Ransomware Credential Phishing PDF Social engineering Content analysis File analysis YARA
Attachment: Fake research internship offer	Sublime Security	1mo ago Sep 1st, 2026	BEC/Fraud Spam PDF Social engineering Out of band pivot Free email provider Optical Character Recognition Content analysis File 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: Fake voicemail via PDF	Sublime Security	5mo ago Apr 30th, 2026	Credential Phishing PDF QR code Social engineering Computer Vision Content analysis File analysis Optical Character Recognition QR code analysis URL analysis
Attachment: Fictitious invoice using LinkedIn's address	Sublime Security	16d ago Oct 9th, 2026	BEC/Fraud PDF Social engineering File analysis Optical Character Recognition Natural Language Understanding Content analysis Exif analysis
Attachment: Finance themed PDF with observed phishing template	Sublime Security	7mo ago Mar 2nd, 2026	Credential Phishing PDF Evasion File analysis Content analysis
Attachment: Google share.google URL shortener in google.<tld>/share.google path form	Sublime Security	27d ago Sep 28th, 2026	Spam Credential Phishing Open redirect Social engineering URL analysis Content analysis File analysis
Attachment: Hex-encoded recipient email in URL fragment	Sublime Security	1mo ago Sep 16th, 2026	Credential Phishing BEC/Fraud Social engineering Evasion PDF File analysis URL analysis Content analysis
Attachment: HTML attachment with Javascript location	@vector_sec	1y ago Aug 5th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis
Attachment: HTML file with excessive 'const' declarations and abnormally long timeouts	Sublime Security	11mo ago Nov 3rd, 2025	Malware/Ransomware Credential Phishing HTML smuggling Scripting Evasion HTML analysis File analysis Content analysis
Attachment: HTML file with reference to recipient and suspicious patterns	Sublime Security	9mo 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	9mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis URL analysis

731 Rules

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