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 Jan 23rd, 2026

Feed Source

GitHub

Tactic or Technique is

Rule Name & Severity	Author	Last Updated	Labels
Mismatched links: Free file share with urgent language	Sublime Security	5mo 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	/feeds/core/detection-rules/mismatched-links-free-file-share-with-urgent-language-478334c8
Notion suspicious file share	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Evasion Free file host Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/notion-suspicious-file-share-f7307929
Service abuse: Adobe Creative Cloud share from an unsolicited sender address	Sublime Security	3mo ago Oct 22nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis	/feeds/core/detection-rules/service-abuse-adobe-creative-cloud-share-from-an-unsolicited-sender-address-47e42ca1
Service abuse: DocSend share from an unsolicited reply-to address	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Evasion Free file host Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/service-abuse-docsend-share-from-an-unsolicited-reply-to-address-b377e64c
Service abuse: DocSend share from newly registered domain	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Credential Phishing Evasion Free file host Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/service-abuse-docsend-share-from-newly-registered-domain-3bc152f2
Service abuse: DocuSign share from an unsolicited reply-to address	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Free file host Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/service-abuse-docusign-share-from-an-unsolicited-reply-to-address-2f12d616
Service abuse: FlipHTML5 with attachment deception and credential theft language	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Free file host Evasion Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/service-abuse-fliphtml5-with-attachment-deception-and-credential-theft-language-02464799
Service abuse: Formester with suspicious link behavior	Sublime Security	1mo ago Dec 19th, 2025	Credential Phishing BEC/Fraud Open redirect Social engineering Free file host Computer Vision Content analysis URL analysis URL screenshot	/feeds/core/detection-rules/service-abuse-formester-with-suspicious-link-behavior-e4b74fd4
Service abuse: Google account notification with links to free file host	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Impersonation: Brand Social engineering Free file host Header analysis URL analysis Sender analysis	/feeds/core/detection-rules/service-abuse-google-account-notification-with-links-to-free-file-host-59786115
Service abuse: Google application integration redirecting to suspicious hosts	Sublime Security	1mo ago Dec 17th, 2025	Credential Phishing Malware/Ransomware Evasion Free file host Free subdomain host Open redirect Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/service-abuse-google-application-integration-redirecting-to-suspicious-hosts-473d3247
Service abuse: Google Drive share from an unsolicited reply-to address	Sublime Security	5mo ago Aug 5th, 2025	BEC/Fraud Callback Phishing Credential Phishing Free email provider Social engineering Free file host Header analysis Sender analysis	/feeds/core/detection-rules/service-abuse-google-drive-share-from-an-unsolicited-reply-to-address-4581ec0c
Service abuse: Google Drive share from new reply-to domain	Sublime Security	2mo ago Nov 13th, 2025	BEC/Fraud Callback Phishing Credential Phishing Free email provider Social engineering Free file host Header analysis Sender analysis Whois	/feeds/core/detection-rules/service-abuse-google-drive-share-from-new-reply-to-domain-c1a2d367
Service abuse: HelloSign from an unsolicited sender address	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis	/feeds/core/detection-rules/service-abuse-hellosign-from-an-unsolicited-sender-address-68ca0753
Service abuse: SendThisFile with credential theft and financial language	Sublime Security	2mo ago Oct 27th, 2025	BEC/Fraud Credential Phishing Free file host Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/service-abuse-sendthisfile-with-credential-theft-and-financial-language-c1ebf25b
Service abuse: SurveyMonkey survey from newly registered domain	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Free file host Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/service-abuse-surveymonkey-survey-from-newly-registered-domain-50a85fa7
Service abuse: Suspicious Zoom Docs link	Sublime Security	1mo ago Dec 2nd, 2025	Credential Phishing Social engineering Free file host Evasion HTML analysis Sender analysis Header analysis	/feeds/core/detection-rules/service-abuse-suspicious-zoom-docs-link-064b2594
Spam: Campaign with excessive space/char obfuscation and free file hosted link	Sublime Security	11d ago Jan 12th, 2026	Spam Free file host Content analysis Sender analysis	/feeds/core/detection-rules/spam-campaign-with-excessive-spacechar-obfuscation-and-free-file-hosted-link-122bc0ca
Spoofable internal domain with suspicious signals	Sublime Security	6mo ago Jul 23rd, 2025	Credential Phishing Free file host Free subdomain host Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/spoofable-internal-domain-with-suspicious-signals-40089d69
Suspicious DocuSign share from new domain	Sublime Security	5mo ago Aug 5th, 2025	BEC/Fraud Credential Phishing Evasion Free file host Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/suspicious-docusign-share-from-new-domain-d430a1f3
Suspicious Links to Cloudflare R2 and Edge Services	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Callback Phishing Credential Phishing Extortion Malware/Ransomware Spam Free file host Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/suspicious-links-to-cloudflare-r2-and-edge-services-5dd3e5c8
Suspicious SharePoint file sharing	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Free email provider Free file host OneNote PDF Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/suspicious-sharepoint-file-sharing-971c3d9c
Zoom Events newsletter abuse	Sublime Security	11d 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	/feeds/core/detection-rules/zoom-events-newsletter-abuse-c8fce846

72 Rules

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