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 Jul 25th, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Link: Recipient email address in 'eta' parameter	Sublime Security	6mo ago Jan 27th, 2026	Credential Phishing Social engineering Evasion URL analysis Content analysis
Link: Referrer anonymization service from untrusted sender	Sublime Security	11mo ago Aug 5th, 2025	Credential Phishing Open redirect Evasion Header analysis URL analysis Sender analysis
Link: ScreenConnect installer with suspicious relay domain	Sublime Security	6mo 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	11mo 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	6mo ago Jan 12th, 2026	Credential Phishing Free file host Evasion Content analysis Sender analysis
Link: Self-sender credential theft with configuration placeholder	Sublime Security	1mo ago May 27th, 2026	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis URL analysis Header analysis
Link: Self-sender with IP geolocation check and suspicious link behavior	Sublime Security	12d ago Jul 14th, 2026	Credential Phishing Evasion Social engineering Sender analysis URL analysis
Link: Self-sender with sender org in subject and credential theft indicator	Sublime Security	6mo 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	30d ago Jun 26th, 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	1mo 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	1y ago Jul 16th, 2025	Credential Phishing Evasion Sender analysis URL analysis
Link: SharePoint OneNote or PDF link with self sender behavior	Sublime Security	4mo 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	3mo 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	3mo 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	8mo ago Nov 25th, 2025	Spam Evasion URL analysis URL screenshot Content analysis
Link: Suspicious Family fragment parameter with encoded recipient data	Sublime Security	2mo ago Apr 27th, 2026	Credential Phishing Evasion Encryption Social engineering URL analysis Content analysis
Link: Suspicious go.php redirect with document lure	Sublime Security	30d ago Jun 26th, 2026	Credential Phishing Evasion Social engineering Content analysis URL analysis
Link: Suspicious SharePoint document name	Sublime Security	4mo ago Mar 17th, 2026	Credential Phishing Free file host Evasion Content analysis
Link: Suspicious Sharepoint folder share	Sublime Security	11mo 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	2mo ago Apr 27th, 2026	Credential Phishing Evasion URL analysis
Link: Suspicious URL with recipient targeting and special characters	Sublime Security	5mo ago Feb 21st, 2026	Credential Phishing Social engineering Evasion URL analysis Content analysis
Link: Suspicious wp-admin path from mismatched sender domain	Sublime Security	9d ago Jul 17th, 2026	Credential Phishing Evasion Social engineering Spoofing URL analysis Sender analysis Header analysis
Link: SVG with embedded recipient data	Sublime Security	1mo ago Jun 12th, 2026	Credential Phishing Evasion URL analysis Content analysis
Link to a domain with punycode characters	@ajpc500	8mo ago Nov 12th, 2025	Credential Phishing Evasion Lookalike domain Punycode Sender analysis URL analysis
Link to auto-downloaded disk image in encrypted zip	@ajpc500	6mo 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	1y 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	1y 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	6mo 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	6mo ago Jan 23rd, 2026	Credential Phishing Free subdomain host Evasion Credential Phishing URL analysis HTML analysis Content analysis
Link: Unformatted template with literal placeholder in mailto link	Sublime Security	27d ago Jun 29th, 2026	Credential Phishing Social engineering Evasion URL analysis Content analysis
Link: Unsolicited email contains link leading to Tycoon URL structure	Sublime Security	4mo 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	4mo ago Mar 10th, 2026	Credential Phishing Evasion Social engineering Sender analysis URL analysis URL screenshot
Link: URL fragment with hexadecimal pattern obfuscation	Sublime Security	5mo ago Jan 29th, 2026	Credential Phishing Evasion Content analysis URL analysis
Link: URL path containing /moni/index	Sublime Security	3mo ago Apr 24th, 2026	Credential Phishing Open redirect Evasion URL analysis
Link: URL redirecting to blob URL	Sublime Security	5mo ago Feb 24th, 2026	Credential Phishing Malware/Ransomware Evasion Free file host Open redirect Sender analysis URL analysis Threat intelligence
Link: URL scheme obfuscation via split HTML anchors	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing BEC/Fraud Evasion HTML injection Social engineering Content analysis HTML analysis URL analysis
Link: URL shortener with copy-paste instructions and credential theft language	Sublime Security	5mo ago Feb 6th, 2026	Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis
Link: WordPress admin targeting with recipient identifier in URL parts	Sublime Security	27d ago Jun 29th, 2026	Credential Phishing Evasion Social engineering URL analysis Content analysis
Low reputation link to auto-downloaded HTML file with smuggling indicators	Sublime Security	6mo 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
macOS malware: Compiled AppleScript with document double-extension	Sublime Security	5mo ago Feb 5th, 2026	Malware/Ransomware Evasion Social engineering File analysis Header analysis
Malformed URL prefix	Sublime Security	12d ago Jul 14th, 2026	Credential Phishing Malware/Ransomware Evasion URL analysis
MalwareBazaar: Malicious attachment hash in archive (trusted reporters)	Sublime Security	2mo ago Apr 29th, 2026	Malware/Ransomware Evasion Archive analysis File analysis Sender analysis Threat intelligence
Malware: Pikabot delivery via URL auto-download	Sublime Security	2y ago Apr 25th, 2024	Malware/Ransomware Evasion Archive analysis File analysis Threat intelligence URL analysis
Message traversed multiple onmicrosoft.com tenants	Sublime Security	6mo ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Free subdomain host Sender analysis Header analysis
Microsoft infrastructure abuse with suspicious patterns	Sublime Security	6mo ago Jan 12th, 2026	BEC/Fraud Callback Phishing Evasion Impersonation: Brand Social engineering Header analysis Sender analysis
Non-RFC compliant calendar files from unsolicited sender	Sublime Security	2mo ago Apr 28th, 2026	Evasion ICS Phishing Social engineering Archive analysis Content analysis File analysis Sender analysis
Notion suspicious file share	Sublime Security	1y ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Evasion Free file host Content analysis Sender analysis URL analysis
Observed IOC: Malicious domains in body links	Sublime Security	1mo ago Jun 10th, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering URL analysis Content analysis
Observed IOC: Malicious root domains in body links	Sublime Security	1mo ago May 27th, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering URL analysis Content analysis
Observed IOC: Malicious URLs in body links	Sublime Security	2mo ago May 19th, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering URL analysis Content analysis

456 Rules

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