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
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 reply-to domains	Sublime Security	3mo 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	3mo 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	3mo 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	1mo ago May 27th, 2026	Credential Phishing Malware/Ransomware Evasion Social engineering URL analysis Content analysis
Observed IOC: Malicious sender domains	Sublime Security	1d ago Jul 25th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Domain Social engineering Sender analysis Header analysis
Observed IOC: Malicious sender email addresses	Sublime Security	1d ago Jul 25th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Email address Social engineering Sender analysis Header analysis
Observed IOC: Malicious sender root domains	Sublime Security	1mo ago Jun 12th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Impersonation: Domain Social engineering Sender analysis Header 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
Open redirect: City of Calgary	Sublime Security	1y ago May 23rd, 2025	Credential Phishing Exploit Open redirect Social engineering Sender analysis URL analysis
Open redirect: giving.lluh.org	Sublime Security	1y ago May 23rd, 2025	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
Open redirect: marketing.edinburghairport.com	Sublime Security	1y ago May 23rd, 2025	Credential Phishing Evasion Open redirect Social engineering Content analysis Header analysis Sender analysis URL analysis
Open redirect: next2.io	Sublime Security	1y ago May 23rd, 2025	Credential Phishing Evasion Open redirect Social engineering Content analysis Header analysis Sender analysis URL analysis
Open redirect: people.anuneo.com	Sublime Security	1y ago May 23rd, 2025	Credential Phishing Evasion Open redirect Social engineering Content analysis Header analysis Sender analysis URL analysis
Open redirect: queue.swytchbike.com	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Open redirect Header analysis URL analysis Sender analysis
Open redirect: Recipient address embedded in redirect URL pointing to newly registered domain	Sublime Security	2d ago Jul 24th, 2026	Credential Phishing Open redirect Social engineering URL analysis Whois
Open redirect: slubnaglowie.pl	Sublime Security	1y ago May 23rd, 2025	Credential Phishing Evasion Open redirect Social engineering Content analysis Header analysis Sender analysis URL analysis
Open redirect: typedrawers.com	Sublime Security	1y ago May 23rd, 2025	Credential Phishing Evasion Open redirect QR code Social engineering Content analysis File analysis QR code analysis Sender analysis
PayPal invoice abuse	Sublime Security	1mo ago Jun 4th, 2026	BEC/Fraud Callback Phishing Evasion Social engineering Content analysis Header analysis Sender analysis
Potential prompt injection attack in body HTML	Sublime Security	6mo ago Jan 12th, 2026	Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam BEC/Fraud Evasion Social engineering Header analysis HTML analysis Content analysis
Punycode sender domain	Sublime Security	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion Lookalike domain Punycode Social engineering Sender analysis
QR code to auto-download of a suspicious file type (unsolicited)	Sublime Security	9mo ago Oct 17th, 2025	Malware/Ransomware Evasion LNK Social engineering Archive analysis File analysis Sender analysis URL analysis QR code analysis
QR Code with suspicious indicators	Sublime Security	3mo ago Apr 22nd, 2026	Credential Phishing QR code Social engineering Content analysis Header analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL analysis
Reconnaissance: Email address harvesting attempt	Sublime Security	5mo ago Feb 23rd, 2026	BEC/Fraud Credential Phishing Spam Free email provider Social engineering Content analysis Header analysis Sender analysis URL analysis
Reconnaissance: Empty message from uncommon sender	Sublime Security	5mo ago Feb 25th, 2026	Spam Evasion Social engineering Content analysis Header analysis
Reconnaissance: Empty subject with mismatched reply-to from new sender	Sublime Security	5mo ago Feb 6th, 2026	BEC/Fraud Credential Phishing Evasion Social engineering Spoofing Header analysis Sender analysis
Reconnaissance: Fake real estate inquiry with empty body	Sublime Security	18d ago Jul 8th, 2026	BEC/Fraud Social engineering Content analysis Sender analysis
Reconnaissance: Hotel booking reply-to redirect	Sublime Security	5mo ago Jan 27th, 2026	BEC/Fraud Free email provider Social engineering Content analysis Header analysis Sender analysis
Reconnaissance: Short generic greeting message	Sublime Security	1mo ago Jun 17th, 2026	BEC/Fraud Callback Phishing Social engineering Free email provider Content analysis Header analysis Natural Language Understanding Sender analysis
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
Salesforce infrastructure abuse	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis Header analysis Natural Language Understanding URL analysis
Scam: Fake estate sale offering welding equipment and tools	Sublime Security	2mo ago May 12th, 2026	BEC/Fraud Social engineering Free email provider Out of band pivot Content analysis Sender analysis Header analysis
Scam soliciting employer review/rating	Sublime Security	1mo ago Jun 12th, 2026	BEC/Fraud Credential Phishing Social engineering Impersonation: Brand Content analysis Natural Language Understanding Header analysis Sender analysis
Self-impersonation: Sender matches recipient with bolded name and suspicious link	Sublime Security	1mo ago Jun 16th, 2026	Credential Phishing Evasion Social engineering Header analysis HTML analysis Sender analysis
Self-sender with copy/paste instructions and suspicious domains (French/Français)	Sublime Security	3mo ago Apr 16th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis Header analysis Sender analysis
Self-sent fake PDF attachment with misleading link	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing Evasion Free subdomain host Social engineering Content analysis URL analysis Sender analysis
Sendgrid voicemail phish	Sublime Security	8mo ago Nov 24th, 2025	Credential Phishing Social engineering Content analysis Header analysis
Service abuse: Adobe Creative Cloud share from an unsolicited sender address	Sublime Security	9mo ago Oct 22nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis
Service abuse: Adobe legitimate domain with document approval language	Sublime Security	6mo ago Jan 23rd, 2026	BEC/Fraud Credential Phishing Social engineering Content analysis Header analysis Sender analysis
Service abuse: Adobe Sign notification from an unsolicited reply-to address	Sublime Security	11mo ago Aug 5th, 2025	BEC/Fraud Callback Phishing Spam Social engineering Impersonation: Brand Header analysis Sender analysis
Service abuse: Amazon invitation with suspected callback phishing	Sublime Security	2mo ago May 22nd, 2026	Callback Phishing Out of band pivot Social engineering Content analysis HTML analysis Sender analysis
Service abuse: Apple TestFlight with suspicious developer reference	Sublime Security	5mo ago Feb 6th, 2026	Spam Social engineering Content analysis HTML analysis Natural Language Understanding Sender analysis URL analysis
Service abuse: AppSheet infrastructure with suspicious indicators	Sublime Security	9mo ago Oct 6th, 2025	Credential Phishing Evasion Social engineering Content analysis Natural Language Understanding URL analysis Whois
Service abuse: AWS SNS callback scam impersonation	Sublime Security	4mo ago Mar 26th, 2026	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis Natural Language Understanding Sender analysis
Service abuse: Behance document sharing with suspicious language	Sublime Security	4mo ago Mar 27th, 2026	Credential Phishing Free file host Social engineering Content analysis URL analysis
Service Abuse: Box file sharing with credential phishing intent	Sublime Security	6mo ago Jan 12th, 2026	Credential Phishing BEC/Fraud Callback Phishing Evasion Social engineering Impersonation: Employee Impersonation: VIP Content analysis Natural Language Understanding Sender analysis Header analysis
Service abuse: Calendly callback scam detection	Sublime Security	12d ago Jul 14th, 2026	Callback Phishing Social engineering Impersonation: Brand Natural Language Understanding Sender analysis
Service abuse: Callback phishing via Microsoft Teams invite	Sublime Security	7mo ago Dec 12th, 2025	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Content analysis URL analysis Sender analysis
Service abuse: Cisco secure email service with financial request	Sublime Security	9mo ago Oct 1st, 2025	BEC/Fraud Impersonation: Brand Social engineering Evasion Content analysis Header analysis Natural Language Understanding Sender analysis

678 Rules

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