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 Sep 30th, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
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: DocuSign impersonation via PDF linking to new domain	Sublime Security	7d ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand PDF Social engineering Header analysis Sender analysis URL analysis File analysis Computer Vision Whois
Attachment: Embedded MSG file with payment lure and newly registered domain	Sublime Security	5d ago Sep 25th, 2026	BEC/Fraud Social engineering Evasion File analysis Content analysis URL analysis Whois Natural Language Understanding
Attachment: ICS calendar invite with bid/RFP lure and suspicious link	Sublime Security	2d ago Sep 28th, 2026	BEC/Fraud Social engineering Free file host Free subdomain host Lookalike domain ICS Phishing File analysis Content analysis URL analysis Whois
Attachment: ICS calendar invite with financial lure and suspicious link	Sublime Security	30d ago Aug 31st, 2026	Credential Phishing BEC/Fraud Social engineering Evasion File analysis Content analysis URL analysis Whois Header analysis
Attachment: ICS calendar with suspicious link Leading to minimal JS landing page	Sublime Security	2d ago Sep 28th, 2026	Credential Phishing Free file host Free subdomain host Evasion Scripting Social engineering ICS Phishing File analysis URL analysis Whois Javascript analysis Content analysis
Attachment: ICS file with credential theft indicators	Sublime Security	2d ago Sep 28th, 2026	Credential Phishing Free file host Free subdomain host Social engineering ICS Phishing File analysis Natural Language Understanding URL analysis Whois
Attachment: ICS file with links to newly registered domains	Sublime Security	5mo ago Apr 20th, 2026	Credential Phishing Social engineering File analysis URL analysis Whois
Attachment: ICS voicemail lure with suspicious link	Sublime Security	2d ago Sep 28th, 2026	Credential Phishing Social engineering Free file host Evasion ICS Phishing File analysis Content analysis URL analysis Whois Header analysis
Attachment: Legal themed message or PDF with suspicious indicators	Sublime Security	15d ago Sep 15th, 2026	Credential Phishing Extortion BEC/Fraud Evasion PDF Social engineering Content analysis File analysis Natural Language Understanding Optical Character Recognition URL analysis Whois Header analysis Exif analysis
Attachment: PDF with multistage landing - ClickUp abuse	Sublime Security	7mo ago Feb 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host PDF Social engineering File analysis URL analysis Whois
BEC: Financial fraud from newly registered sender domain	Sublime Security	3mo ago Jun 25th, 2026	BEC/Fraud Social engineering Spoofing Natural Language Understanding Whois Content analysis Sender analysis Header analysis
BEC/Fraud: Urgent language and suspicious sending/infrastructure patterns	Sublime Security	5mo ago Apr 17th, 2026	BEC/Fraud Callback Phishing Spam Impersonation: Brand Social engineering Free email provider Content analysis Header analysis Sender analysis Whois
BEC: Wealth management lure from newly registered domain	Sublime Security	22d ago Sep 8th, 2026	BEC/Fraud Social engineering Whois Content analysis Natural Language Understanding
Brand impersonation: Anthropic/Claude with newly registered domain	Sublime Security	2mo ago Jul 24th, 2026	BEC/Fraud Spam Lookalike domain Social engineering Spoofing Content analysis Header analysis Sender analysis Whois
Brand impersonation: Microsoft fake sign-in alert	Sublime Security	2mo ago Jul 27th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Sender analysis Whois
Brand Impersonation: OpenAI with ChatGPT Ads lure	Sublime Security	3mo ago Jun 24th, 2026	Credential Phishing Impersonation: Brand Social engineering Sender analysis Whois Content analysis
Brand impersonation: SharePoint PDF attachment with credential theft language	Sublime Security	7d ago Sep 23rd, 2026	Credential Phishing Impersonation: Brand Social engineering PDF Evasion Computer Vision File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis Header analysis Whois
Brand impersonation: Silicon Valley Bank	Sublime Security	8mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Sender analysis Whois
Brand impersonation: Stripe notification	Sublime Security	7d ago Sep 23rd, 2026	Credential Phishing Evasion Impersonation: Brand Social engineering Content analysis Header analysis URL analysis Whois
Callback phishing: Branded invoice from sender/reply-to domain less than 30 days old	Sublime Security	11mo ago Oct 17th, 2025	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Header analysis Natural Language Understanding Optical Character Recognition Whois
Credential phishing: Fake security alert from newly registered domain	Sublime Security	13d ago Sep 17th, 2026	Credential Phishing Social engineering Impersonation: Brand Whois Content analysis Sender analysis
Fraudulent order confirmation/shipping notification from Chinese sender domain	Sublime Security	8mo ago Jan 12th, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Sender analysis Whois
Generic service abuse from newly registered domain	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Callback Phishing Credential Phishing Evasion Social engineering Header analysis Sender analysis Whois
Impersonation: Suspected supplier impersonation with suspicious content	Sublime Security	2mo ago Jul 27th, 2026	BEC/Fraud Evasion Free email provider Lookalike domain Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois
Link: Abused Adobe Express	Sublime Security	1y ago Jul 23rd, 2025	Credential Phishing Evasion Free subdomain host Free file host Content analysis Sender analysis URL analysis Whois HTML analysis
Link: Commonly Abused Web Service redirecting to ZIP file	Sublime Security	6mo ago Mar 10th, 2026	Malware/Ransomware Free file host Free subdomain host Open redirect Evasion URL analysis Whois Archive analysis
Link: Cryptocurrency fraud with suspicious links	Sublime Security	10mo ago Dec 1st, 2025	BEC/Fraud Social engineering Evasion Free subdomain host Scripting Content analysis Header analysis Javascript analysis Natural Language Understanding Sender analysis URL analysis URL screenshot Whois
Link: Document-themed link to newly registered domain	Sublime Security	1mo ago Aug 18th, 2026	Credential Phishing Malware/Ransomware Social engineering Evasion URL analysis Whois Content analysis
Link: Fake video link from newly registered domain	Sublime Security	22d ago Sep 8th, 2026	Malware/Ransomware Social engineering Whois URL analysis Sender analysis
Link: Financial account issue with suspicious indicators	Sublime Security	6mo ago Mar 24th, 2026	Credential Phishing Free file host Free subdomain host Social engineering Content analysis Natural Language Understanding URL analysis Whois
Link: Google Firebase dynamic link that redirects to new domain (<7 days old)	@ajpc500	8mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion URL analysis Whois
Link: Multistage landing - Abused Adobe frame.io	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Evasion Free file host Content analysis Whois Computer Vision URL analysis HTML analysis
Link: Multistage landing - Abused Docusign	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Evasion Free subdomain host Free file host Content analysis Sender analysis URL analysis Whois HTML analysis
Link: Multistage landing - Abused Google Drive	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Evasion Free email provider Free file host Content analysis Sender analysis URL analysis Whois HTML analysis
Link: Multistage landing - ClickUp abuse	Sublime Security	7mo ago Feb 27th, 2026	Credential Phishing Malware/Ransomware Evasion Free file host Free subdomain host Open redirect URL analysis Whois Content analysis
Link: Multistage landing - Published Google Doc	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Free file host Social engineering Natural Language Understanding URL analysis Whois
Link: Newly registered domain in reference lure	Sublime Security	1d ago Sep 29th, 2026	Credential Phishing BEC/Fraud Social engineering Content analysis URL analysis Whois
Link: Newly registered suspicious domain with single-character HTML filename	Sublime Security	5d ago Sep 25th, 2026	Credential Phishing Evasion Social engineering URL analysis Whois
Link: Observed URL pattern with specific domain registrar	Sublime Security	3mo ago Jun 12th, 2026	Spam Free email provider URL analysis Sender analysis Whois
Link: Recently registered .vu domain in lure	Sublime Security	1mo ago Aug 28th, 2026	Credential Phishing BEC/Fraud Spam Social engineering Impersonation: Brand URL analysis Whois
Link: Romance/Sexual Language With Suspicious Link	Sublime Security	23h ago Sep 29th, 2026	Spam Social engineering Content analysis Header analysis URL analysis Whois
Link: Tax document lure Portuguese/Spanish with suspicious domains	Sublime Security	5mo ago Apr 14th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Free file host Free subdomain host Social engineering Content analysis URL analysis Whois
New link domain (<=10d) from untrusted sender	Sublime Security	1mo ago Aug 10th, 2026	Credential Phishing Malware/Ransomware Sender analysis URL analysis Whois
Newly registered sender or reply-to domain with newly registered linked domain	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Credential Phishing Malware/Ransomware Social engineering Header analysis URL analysis Whois
New sender domain (<=10d) from untrusted sender	Sublime Security	2y ago Nov 20th, 2024	Sender analysis Whois
Open redirect: Recipient address embedded in redirect URL pointing to newly registered domain	Sublime Security	2mo ago Jul 24th, 2026	Credential Phishing Open redirect Social engineering URL analysis Whois
Recruitee Infrastructure Abuse	Sublime Security	1y ago Jul 16th, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis Whois
Service abuse: Adobe message from newly registered domain	Sublime Security	2mo ago Jul 31st, 2026	Credential Phishing Evasion Social engineering Lookalike domain Sender analysis Header analysis URL analysis Whois
Service abuse: AppSheet infrastructure with suspicious indicators	Sublime Security	11mo ago Oct 6th, 2025	Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis Whois

69 Rules

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