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

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Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Abuse: Cloudflare Workers Hosted EvilTokens Domain Structure	Sublime Security	6mo ago Apr 6th, 2026	Credential Phishing Impersonation: Brand Evasion Social engineering URL analysis
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
Attachment: Archive containing HTML file with file scheme link	Sublime Security	7mo ago Mar 17th, 2026	Credential Phishing Evasion Exploit HTML smuggling Social engineering Archive analysis File analysis HTML 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 from recently registered domain	Sublime Security	5mo ago Apr 28th, 2026	Callback Phishing Evasion ICS Phishing Social engineering File analysis Whois
Attachment: Calendar invite with Google redirect and invoice request	Sublime Security	5mo ago Apr 28th, 2026	Credential Phishing BEC/Fraud ICS Phishing Open redirect Social engineering File analysis Natural Language Understanding 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 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: 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 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: 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: 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: DOCX with hyperlink targeting recipient address	Sublime Security	10mo ago Dec 17th, 2025	Credential Phishing Malware/Ransomware Evasion Social engineering File analysis Archive analysis XML 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 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 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 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: EML with suspicious indicators	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion HTML smuggling Social engineering Content analysis File 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 attachment image lure	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Malware/Ransomware Evasion Image as content Social engineering File analysis Natural Language Understanding Optical Character Recognition
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 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 LinkedIn invoice PDF lure	Sublime Security	2d ago Oct 23rd, 2026	BEC/Fraud Credential Phishing Impersonation: Brand PDF Social engineering YARA File analysis
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 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	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: 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	16d ago Oct 9th, 2026	BEC/Fraud PDF Social engineering File analysis Optical Character Recognition Natural Language Understanding Content analysis Exif analysis
Attachment: GCPay blurred check PDF	Sublime Security	5d ago Oct 20th, 2026	BEC/Fraud PDF Social engineering Image as content File analysis YARA
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 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 with dynamically constructed redirect URL	Sublime Security	26d ago Sep 29th, 2026	Credential Phishing HTML smuggling Evasion Impersonation: Brand Social engineering Scripting HTML analysis Javascript analysis File 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

850 Rules

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