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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GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Link: Suspicious wp-admin path from mismatched sender domain	Sublime Security	3mo ago Jul 17th, 2026	Credential Phishing Evasion Social engineering Spoofing URL analysis Sender analysis Header analysis
Link: Tax document lure Portuguese/Spanish with suspicious domains	Sublime Security	6mo ago Apr 14th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Free file host Free subdomain host Social engineering Content analysis URL analysis Whois
Link: Telegraph-hosted content	Sublime Security	2mo ago Aug 19th, 2026	Spam Credential Phishing Social engineering Free file host URL analysis
Link to auto-downloaded disk image in encrypted zip	@ajpc500	9mo 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 encrypted zip	Sublime Security	1mo ago Sep 23rd, 2026	Malware/Ransomware Encryption Evasion Social engineering Archive analysis File analysis Sender analysis URL analysis YARA
Link to auto-downloaded file with Adobe branding	Sublime Security	1y ago Jul 16th, 2025	Malware/Ransomware Impersonation: Brand Social engineering File analysis Optical Character Recognition Sender analysis URL analysis URL screenshot
Link to auto-downloaded file with Google Drive branding	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Impersonation: Brand Social engineering Content analysis File analysis Optical Character Recognition URL analysis URL screenshot
Link to auto-download of a suspicious file type (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Encryption Evasion LNK Social engineering Archive analysis File analysis Sender analysis URL analysis YARA
Link to Google Apps Script macro (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Open redirect Social engineering Sender analysis URL analysis
Link to Google Apps Script macro via comment tagging	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Social engineering Content analysis Sender analysis URL analysis
Link: Uncommon SharePoint document type with sender's display name	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Social engineering OneNote PDF Content analysis Header analysis HTML analysis URL analysis
Link: Unformatted template with literal placeholder in mailto link	Sublime Security	2mo ago Aug 3rd, 2026	Credential Phishing Social engineering Evasion URL analysis Content analysis
Link: Unicode character obfuscation in display name with base64-encoded URL fragment	Sublime Security	2mo ago Aug 3rd, 2026	Credential Phishing Evasion Social engineering URL analysis Sender analysis Content analysis
Link: Unsolicited email contains link leading to Tycoon URL structure	Sublime Security	7mo 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	7mo ago Mar 10th, 2026	Credential Phishing Evasion Social engineering Sender analysis URL analysis URL screenshot
Link: URL fragmented by hidden spans	Sublime Security	2mo ago Aug 13th, 2026	Credential Phishing Evasion Social engineering HTML analysis Content analysis URL analysis
Link: URL scheme obfuscation via split HTML anchors	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing BEC/Fraud Evasion HTML injection Social engineering Content analysis HTML analysis URL analysis
Link: URL shortener chaining to workers.dev redirect	Sublime Security	2mo ago Aug 10th, 2026	Credential Phishing Open redirect Free subdomain host Social engineering Evasion URL analysis Threat intelligence
Link: URL shortener with copy-paste instructions and credential theft language	Sublime Security	8mo ago Feb 6th, 2026	Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis
Link: URL using underscore-dot substitution in display text	Sublime Security	2mo ago Aug 7th, 2026	Credential Phishing Evasion Social engineering URL analysis Content analysis
Link: WordPress admin targeting with recipient identifier in URL parts	Sublime Security	2mo ago Aug 14th, 2026	Credential Phishing Evasion Social engineering URL analysis Content analysis
Link: WordPress login page with Blogspot Binance scam	Sublime Security	8mo ago Feb 17th, 2026	Credential Phishing BEC/Fraud Social engineering Free subdomain host Impersonation: Brand Content analysis URL analysis
Lookalike sender domain (untrusted sender)	Sublime Security	1mo ago Sep 23rd, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Lookalike domain Social engineering Sender analysis
Low reputation link to auto-downloaded HTML file with smuggling indicators	Sublime Security	2mo ago Jul 29th, 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	1mo ago Sep 23rd, 2026	Malware/Ransomware Evasion Social engineering File analysis Header analysis
Mass campaign: Cross Site Scripting (XSS) attempt	Sublime Security	27d ago Sep 28th, 2026	Malware/Ransomware Spam Exploit Free email provider Scripting Social engineering Content analysis Header analysis Sender analysis
Mass campaign: recipient address in subject, body, and link (untrusted sender)	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Social engineering Header analysis Natural Language Understanding Sender analysis
Message content: Request for author engagement	Sublime Security	3mo ago Jul 24th, 2026	Spam Social engineering Content analysis
Microsoft device code phishing	@ajpc500	9mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis
Microsoft infrastructure abuse with suspicious patterns	Sublime Security	9mo ago Jan 12th, 2026	BEC/Fraud Callback Phishing Evasion Impersonation: Brand Social engineering Header analysis Sender analysis
Mismatched links: Free file share with urgent language	Sublime Security	1y ago Aug 5th, 2025	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Free file host Social engineering Natural Language Understanding Sender analysis URL analysis
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
Non-RFC compliant calendar files from unsolicited sender	Sublime Security	5mo ago Apr 28th, 2026	Evasion ICS Phishing Social engineering Archive analysis Content analysis File analysis Sender analysis
Observed IOC: Mail transiting bulletproof host - SmartApe	Sublime Security	17d ago Oct 8th, 2026	Malware/Ransomware Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Observed IOC: Mail transiting OFAC-sanctioned bulletproof host Aeza Group	Sublime Security	3d ago Oct 22nd, 2026	Malware/Ransomware Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Observed IOC: Mail transiting OFAC-sanctioned bulletproof host Media Land / ML Cloud	Sublime Security	17d ago Oct 8th, 2026	Malware/Ransomware Credential Phishing BEC/Fraud Evasion Social engineering Header analysis Sender analysis
Observed IOC: Malicious attachment SHA-256 hashes	Sublime Security	1mo ago Aug 28th, 2026	Malware/Ransomware Credential Phishing Social engineering Evasion Attachment analysis Content analysis
Observed IOC: Malicious domains in body links	Sublime Security	19d ago Oct 6th, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering URL analysis Content analysis
Observed IOC: Malicious reply-to domains	Sublime Security	6mo ago Apr 27th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Domain Social engineering Header analysis Sender analysis
Observed IOC: Malicious reply-to email addresses	Sublime Security	6mo ago Apr 27th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Email address Social engineering Header analysis Sender analysis
Observed IOC: Malicious reply-to root domains	Sublime Security	6mo ago Apr 27th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Domain Social engineering Header analysis Sender analysis
Observed IOC: Malicious root domains in body links	Sublime Security	20d ago Oct 5th, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering URL analysis Content analysis
Observed IOC: Malicious sender domains	Sublime Security	27d ago Sep 28th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Domain Social engineering Sender analysis Header analysis
Observed IOC: Malicious sender email addresses	Sublime Security	2d ago Oct 23rd, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Email address Social engineering Sender analysis Header analysis
Observed IOC: Malicious sender root domains	Sublime Security	2d ago Oct 23rd, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Domain Social engineering Sender analysis Header analysis
Observed IOC: Malicious URLs in body links	Sublime Security	23d ago Oct 2nd, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering URL analysis Content analysis
Open redirect: City of Calgary	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Exploit Open redirect Social engineering Sender analysis URL analysis
Open redirect: Generic link.html redirector abuse	Sublime Security	1mo ago Sep 1st, 2026	Spam Credential Phishing Open redirect Social engineering URL analysis Content analysis
Open redirect: giving.lluh.org	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion Open redirect Social engineering Content analysis Header analysis Sender analysis URL analysis
Open redirect: Klaviyo	Sublime Security	2y ago May 14th, 2024	Credential Phishing Spam Evasion Impersonation: Brand Open redirect Social engineering Content analysis URL analysis

850 Rules

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