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 Mar 27th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Attachment: Calendar invite with suspicious link leading to an open redirect	Sublime Security	8mo ago Jul 16th, 2025	Spam Free email provider Free file host Free subdomain host Open redirect Content analysis URL analysis
Attachment: EML file with IPFS links	Sublime Security	4mo ago Nov 4th, 2025	Credential Phishing Evasion Free file host Free subdomain host IPFS File analysis URL analysis
Attachment: EML with link to credential phishing page	Sublime Security	8mo ago Jul 16th, 2025	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: HTML smuggling Microsoft sign in	Sublime Security	2mo 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 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: PDF bid/proposal lure with credential theft indicators	Sublime Security	3d ago Mar 27th, 2026	BEC/Fraud Credential Phishing PDF Social engineering Free file host Free subdomain host File analysis Content analysis Optical Character Recognition Natural Language Understanding URL analysis Exif analysis
Attachment: PDF with credential theft language and link to a free subdomain (unsolicited)	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Free subdomain host PDF Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Attachment: PDF with multistage landing - ClickUp abuse	Sublime Security	1mo ago Feb 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host PDF Social engineering File analysis URL analysis Whois
Brand impersonation: Coinbase with suspicious links	Sublime Security	6mo ago Sep 22nd, 2025	Credential Phishing Evasion Free subdomain host Image as content Impersonation: Brand Computer Vision Content analysis File analysis URL analysis
Brand impersonation: Fake Fax	Sublime Security	1mo ago Feb 5th, 2026	Credential Phishing Impersonation: Brand Image as content Free file host Free subdomain host Social engineering Computer Vision Content analysis Optical Character Recognition Sender analysis URL analysis
ClickFunnels link infrastructure abuse	Sublime Security	1mo ago Feb 5th, 2026	Credential Phishing Free email provider Free subdomain host Social engineering Content analysis Header analysis QR code analysis Sender analysis URL analysis
Credential phishing: Engaging language with IPFS link	Sublime Security	2y ago May 3rd, 2024	Credential Phishing Free file host Free subdomain host IPFS Content analysis Natural Language Understanding URL analysis
Credential phishing: Onedrive impersonation	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Free subdomain host Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding URL analysis
Deceptive Dropbox mention	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Free file host Free subdomain host Social engineering Header analysis Content analysis Natural Language Understanding Sender analysis URL analysis
Free subdomain link with credential theft indicators	Sublime Security	2y ago Dec 12th, 2024	Credential Phishing Free subdomain host Content analysis Header analysis Natural Language Understanding Optical Character Recognition URL analysis URL screenshot
Free subdomain link with login or captcha (untrusted sender)	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Free subdomain host Social engineering Computer Vision File analysis Sender analysis URL screenshot
Invoicera infrastructure abuse	Sublime Security	2y ago Mar 7th, 2024	Credential Phishing Spam Free file host Free subdomain host Image as content Social engineering Content analysis Header analysis Sender analysis
Link: Abused Adobe Express	Sublime Security	8mo ago Jul 23rd, 2025	Credential Phishing Evasion Free subdomain host Free file host Content analysis Sender analysis URL analysis Whois HTML analysis
Link: Blogspot hosting explicit romance content	Sublime Security	21d ago Mar 9th, 2026	Spam Free subdomain host Social engineering Natural Language Understanding URL analysis
Link: Breely link masquerading as PDF	Sublime Security	2mo ago Jan 16th, 2026	BEC/Fraud Credential Phishing Free subdomain host Social engineering Content analysis URL analysis
Link: Commonly Abused Web Service redirecting to ZIP file	Sublime Security	20d ago Mar 10th, 2026	Malware/Ransomware Free file host Free subdomain host Open redirect Evasion URL analysis Whois Archive analysis
Link: Credential phishing via WordPress	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing Social engineering Free subdomain host URL analysis Header analysis Computer Vision
Link: Cryptocurrency fraud with suspicious links	Sublime Security	3mo 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: File sharing impersonation with suspicious language and sending patterns	Sublime Security	4mo ago Oct 31st, 2025	BEC/Fraud Credential Phishing Social engineering Free subdomain host Impersonation: Brand Natural Language Understanding URL analysis Sender analysis Header analysis Content analysis
Link: Financial account issue with suspicious indicators	Sublime Security	6d ago Mar 24th, 2026	Credential Phishing Free file host Free subdomain host Social engineering Content analysis Natural Language Understanding URL analysis Whois
Link: Free file hosting with undisclosed recipients	Sublime Security	11d ago Mar 19th, 2026	Credential Phishing Malware/Ransomware Free file host Free subdomain host Evasion Header analysis URL analysis Sender analysis Natural Language Understanding
Link: Free subdomain host with undisclosed recipients	Sublime Security	2mo ago Jan 12th, 2026	Free subdomain host Header analysis URL analysis
Link: IPFS	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Free file host Free subdomain host IPFS Sender analysis URL analysis
Link: Jensi file preview link from unsolicited sender	Sublime Security	2mo ago Jan 12th, 2026	Callback Phishing Free file host Free subdomain host Content analysis URL analysis Sender analysis
Link: Multistage landing - Abused Docusign	Sublime Security	7mo 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 - ClickUp abuse	Sublime Security	1mo ago Feb 27th, 2026	Credential Phishing Malware/Ransomware Evasion Free file host Free subdomain host Open redirect URL analysis Whois Content analysis
Link: Tycoon2FA phishing kit (non-exhaustive)	Sublime Security	2mo ago Jan 23rd, 2026	Credential Phishing Free subdomain host Evasion Credential Phishing URL analysis HTML analysis Content analysis
Link: Webflow link from unsolicited sender	Sublime Security	7mo ago Aug 5th, 2025	Callback Phishing Free file host Free subdomain host Content analysis URL analysis Sender analysis
Link: WordPress login page with Blogspot Binance scam	Sublime Security	1mo ago Feb 17th, 2026	Credential Phishing BEC/Fraud Social engineering Free subdomain host Impersonation: Brand Content analysis URL analysis
Low reputation link to auto-downloaded HTML file with smuggling indicators	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Evasion Free file host Free subdomain host HTML smuggling Impersonation: Brand Open redirect Social engineering Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
Message traversed multiple onmicrosoft.com tenants	Sublime Security	2mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Free subdomain host Sender analysis Header analysis
Self-sent fake PDF attachment with misleading link	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis URL analysis Sender analysis
Service abuse: Google application integration redirecting to suspicious hosts	Sublime Security	3mo ago Dec 17th, 2025	Credential Phishing Malware/Ransomware Evasion Free file host Free subdomain host Open redirect Header analysis Sender analysis URL analysis
Service abuse: Google Firebase sender address with suspicious content	Sublime Security	18d ago Mar 12th, 2026	Spam Credential Phishing Free subdomain host Social engineering Content analysis Header analysis HTML analysis Natural Language Understanding Sender analysis URL analysis Whois
Service abuse: Google OAuth with suspicious redirect destination	Sublime Security	18d ago Mar 12th, 2026	Credential Phishing Evasion Free file host Free subdomain host Open redirect Social engineering URL analysis Threat intelligence
Shopify infrastructure abuse	Sublime Security	2y ago Nov 13th, 2024	Credential Phishing Spam Evasion Free subdomain host Impersonation: Brand Social engineering Content analysis Header analysis URL analysis
Spam: Link to blob.core.windows.net from new domain (<30d)	Sublime Security	8mo ago Jul 16th, 2025	Spam Free subdomain host Header analysis URL analysis Sender analysis
Spoofable internal domain with suspicious signals	Sublime Security	8mo ago Jul 23rd, 2025	Credential Phishing Free file host Free subdomain host Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis
Vendor compromise: GovDelivery message with suspicious link	Sublime Security	7mo ago Aug 5th, 2025	Credential Phishing Malware/Ransomware Free subdomain host IPFS Social engineering Evasion Impersonation: Brand Natural Language Understanding URL analysis Whois
Zoom Events newsletter abuse	Sublime Security	2mo ago Jan 12th, 2026	Credential Phishing Free file host Free subdomain host Social engineering Impersonation: Brand Header analysis HTML analysis Natural Language Understanding URL analysis

45 Rules