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 Jun 8th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Link: Microsoft device code authentication with suspicious indicators	Sublime Security	2mo ago Mar 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Evasion URL analysis URL screenshot Content analysis
Link: Microsoft Dynamics 365 form phishing	Sublime Security	4mo ago Jan 27th, 2026	Credential Phishing Evasion Content analysis File analysis Optical Character Recognition Natural Language Understanding URL analysis URL screenshot
Link: Microsoft protected message with matching sender and recipient addresses	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis File analysis Header analysis Sender analysis URL analysis
Link: Mixed case HTTPS protocol	Sublime Security	3mo ago Mar 9th, 2026	Credential Phishing Malware/Ransomware Evasion Content analysis URL analysis
Link: Multiple HTTP protocols in single URL	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Content analysis URL analysis
Link: Multistage landing - Abused Adobe frame.io	Sublime Security	10mo 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	10mo 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	10mo 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	3mo 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 - JotForm abuse	Sublime Security	6mo ago Dec 1st, 2025	Credential Phishing Evasion Social engineering Content analysis HTML analysis Javascript analysis URL analysis
Link: Multistage landing - Ludus presentation	Sublime Security	10mo ago Aug 5th, 2025	Credential Phishing Evasion Social engineering Impersonation: Brand Header analysis URL analysis Computer Vision URL screenshot Natural Language Understanding Optical Character Recognition Sender analysis
Link: Multistage landing - Scribd document	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Impersonation: Brand Free file host URL analysis HTML analysis Natural Language Understanding Computer Vision Optical Character Recognition URL screenshot
Link: Non-standard port 8443 in display URL	Sublime Security	2mo ago Mar 26th, 2026	Credential Phishing Malware/Ransomware Evasion URL analysis
Link: Numeric IP obfuscation in URL	Sublime Security	12d ago May 28th, 2026	Credential Phishing Malware/Ransomware Evasion URL analysis
Link: Obfuscation via userinfo with excessive URL padding	Sublime Security	10mo ago Aug 5th, 2025	Credential Phishing Evasion Impersonation: Brand URL analysis
Link: Obfuscation via userinfo with suspicious indicators	Sublime Security	2mo ago Mar 13th, 2026	Credential Phishing Malware/Ransomware Evasion URL analysis Content analysis
Link: .onion From Unsolicited Sender	Sublime Security	10mo ago Jul 30th, 2025	Malware/Ransomware Credential Phishing Evasion Social engineering URL analysis Header analysis Sender analysis
Link: PDF display text with fake copyright claim template	Sublime Security	2mo ago Mar 18th, 2026	Credential Phishing Malware/Ransomware Evasion Image as content PDF Content analysis HTML analysis
Link: PDF file disguised as HTML page	Sublime Security	4d ago Jun 5th, 2026	Credential Phishing Malware/Ransomware Evasion PDF URL analysis Content analysis
Link: PDF filename impersonation with credential theft language	Sublime Security	3mo ago Feb 12th, 2026	Credential Phishing Social engineering Evasion PDF Content analysis Natural Language Understanding Header analysis Sender analysis URL analysis
Link: QR code in EML attachment with credential phishing indicators	Sublime Security	6mo ago Dec 2nd, 2025	Credential Phishing Evasion Open redirect QR code Computer Vision Content analysis File analysis QR code analysis
Link: Recipient email address in 'eta' parameter	Sublime Security	4mo ago Jan 27th, 2026	Credential Phishing Social engineering Evasion URL analysis Content analysis
Link: Referrer anonymization service from untrusted sender	Sublime Security	10mo ago Aug 5th, 2025	Credential Phishing Open redirect Evasion Header analysis URL analysis Sender analysis
Link: ScreenConnect installer with suspicious relay domain	Sublime Security	4mo ago Jan 12th, 2026	Malware/Ransomware Evasion Out of band pivot Social engineering URL analysis File analysis Content analysis
Link: Scribd fullscreen link from suspicious sender	Sublime Security	10mo ago Aug 5th, 2025	Credential Phishing Free file host Social engineering Evasion URL analysis Sender analysis
Link: Secure SharePoint file share from new or unusual sender	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Free file host Evasion Content analysis Sender analysis
Link: Self-sender credential theft with configuration placeholder	Sublime Security	13d ago May 27th, 2026	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis URL analysis Header analysis
Link: Self-sender with sender org in subject and credential theft indicator	Sublime Security	4mo ago Jan 12th, 2026	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Header analysis
Link: Self-sent message with quarterly document review request	Sublime Security	4mo ago Jan 21st, 2026	BEC/Fraud Credential Phishing Social engineering Evasion Content analysis Header analysis Sender analysis URL analysis
Link: Self-sent PDF lure with subject correlation	Sublime Security	5d ago Jun 4th, 2026	BEC/Fraud Credential Phishing Social engineering Evasion Header analysis HTML analysis Sender analysis Content analysis
Link: SharePoint files shared from GoDaddy federated tenants	Sublime Security	10mo ago Jul 16th, 2025	Credential Phishing Evasion Sender analysis URL analysis
Link: SharePoint OneNote or PDF link with self sender behavior	Sublime Security	3mo ago Feb 27th, 2026	Credential Phishing Evasion Free file host OneNote PDF Header analysis URL analysis Sender analysis
Link: Shortened URL with fragment matching subject	Sublime Security	2mo ago Apr 9th, 2026	Credential Phishing BEC/Fraud Evasion Social engineering Content analysis URL analysis Header analysis
Link: Single character path with credential theft body and self sender behavior or invalid recipient	Sublime Security	1mo ago Apr 24th, 2026	Credential Phishing Evasion Social engineering Natural Language Understanding URL analysis Sender analysis Header analysis
Link: Spam website with evasion indicators	Sublime Security	6mo ago Nov 25th, 2025	Spam Evasion URL analysis URL screenshot Content analysis
Link: Suspicious Family fragment parameter with encoded recipient data	Sublime Security	1mo ago Apr 27th, 2026	Credential Phishing Evasion Encryption Social engineering URL analysis Content analysis
Link: Suspicious go.php redirect with document lure	Sublime Security	4mo ago Feb 6th, 2026	Credential Phishing Evasion Social engineering Content analysis URL analysis
Link: Suspicious SharePoint document name	Sublime Security	2mo ago Mar 17th, 2026	Credential Phishing Free file host Evasion Content analysis
Link: Suspicious Sharepoint folder share	Sublime Security	10mo ago Aug 5th, 2025	Credential Phishing Free file host Evasion HTML analysis Header analysis Sender analysis URL analysis
Link: Suspicious URL path with binary character sequence	Sublime Security	1mo ago Apr 27th, 2026	Credential Phishing Evasion URL analysis
Link: Suspicious URL with recipient targeting and special characters	Sublime Security	3mo ago Feb 21st, 2026	Credential Phishing Social engineering Evasion URL analysis Content analysis
Link to a domain with punycode characters	@ajpc500	6mo ago Nov 12th, 2025	Credential Phishing Evasion Lookalike domain Punycode Sender analysis URL analysis
Link to auto-downloaded disk image in encrypted zip	@ajpc500	4mo ago Jan 12th, 2026	Malware/Ransomware Encryption Evasion Social engineering Archive analysis File analysis Sender analysis URL analysis YARA
Link to auto-downloaded DMG in archive	Sublime Security	10mo ago Jul 16th, 2025	Malware/Ransomware Evasion Archive analysis File analysis Sender analysis URL analysis
Link to auto-downloaded DMG in encrypted zip	Sublime Security	10mo ago Jul 16th, 2025	Malware/Ransomware Encryption Evasion Social engineering Archive analysis File analysis Sender analysis URL analysis YARA
Link to auto-download of a suspicious file type (unsolicited)	Sublime Security	4mo ago Jan 12th, 2026	Malware/Ransomware Encryption Evasion LNK Social engineering Archive analysis File analysis Sender analysis URL analysis YARA
Link: Tycoon2FA phishing kit (non-exhaustive)	Sublime Security	4mo ago Jan 23rd, 2026	Credential Phishing Free subdomain host Evasion Credential Phishing URL analysis HTML analysis Content analysis
Link: Unsolicited email contains link leading to Tycoon URL structure	Sublime Security	3mo ago Mar 10th, 2026	Credential Phishing Evasion Social engineering Natural Language Understanding URL analysis
Link: Unsolicited email contains link to page containing Tycoon URI structure	Sublime Security	3mo ago Mar 10th, 2026	Credential Phishing Evasion Social engineering Sender analysis URL analysis URL screenshot
Link: URL fragment with hexadecimal pattern obfuscation	Sublime Security	4mo ago Jan 29th, 2026	Credential Phishing Evasion Content analysis URL analysis

414 Rules

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