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

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Impersonation: Suspected supplier impersonation with suspicious content	Sublime Security	11mo ago Feb 3rd, 2025	BEC/Fraud Evasion Free email provider Lookalike domain Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois	/feeds/core/detection-rules/impersonation-suspected-supplier-impersonation-with-suspicious-content-63d8b1ce
Inline image as message with attachment or link	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Evasion Image as content Content analysis HTML analysis URL analysis	/feeds/core/detection-rules/inline-image-as-message-with-attachment-or-link-823d7107
Invoicera infrastructure abuse	Sublime Security	2y ago Mar 7th, 2024	Credential Phishing Spam Free file host Free subdomain host Image as content Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/invoicera-infrastructure-abuse-1e56f310
Job scam (unsolicited sender)	Sublime Security	2mo ago Nov 3rd, 2025	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/job-scam-unsolicited-sender-a37dc32d
Job scam with specific salary pattern	Sublime Security	2d ago Jan 21st, 2026	BEC/Fraud Social engineering Content analysis Natural Language Understanding Header analysis Sender analysis	/feeds/core/detection-rules/job-scam-with-specific-salary-pattern-af7f9e21
Link: Abused Adobe Express	Sublime Security	6mo ago Jul 23rd, 2025	Credential Phishing Evasion Free subdomain host Free file host Content analysis Sender analysis URL analysis Whois HTML analysis	/feeds/core/detection-rules/link-abused-adobe-express-c7d17bfd
Link: Adobe share from unsolicited sender	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free file host Evasion Content analysis Sender analysis	/feeds/core/detection-rules/link-adobe-share-from-unsolicited-sender-8e29ab33
Link: Adobe share with suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Free file host Content analysis URL screenshot Sender analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-adobe-share-with-suspicious-indicators-b33cae80
Link: Apple App Store malicious ad manager themed apps from free email provider	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing BEC/Fraud Malware/Ransomware Free email provider Social engineering Evasion Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-apple-app-store-malicious-ad-manager-themed-apps-from-free-email-provider-9ce402c6
Link: Base64 encoded recipient address in URL fragment with subject hash	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Encryption Evasion Social engineering Content analysis URL analysis Header analysis	/feeds/core/detection-rules/link-base64-encoded-recipient-address-in-url-fragment-with-subject-hash-eb9694b8
Link: Breely link masquerading as PDF	Sublime Security	7d ago Jan 16th, 2026	BEC/Fraud Credential Phishing Free subdomain host Social engineering Content analysis URL analysis	/feeds/core/detection-rules/link-breely-link-masquerading-as-pdf-4a498c21
Link: chatbot.page platform abuse	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Social engineering Out of band pivot URL analysis Natural Language Understanding Content analysis HTML analysis Javascript analysis URL screenshot	/feeds/core/detection-rules/link-chatbotpage-platform-abuse-bfd6a076
Link: Credential phishing traversing Russian infrastructure	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-credential-phishing-traversing-russian-infrastructure-a5203e3b
Link: Cryptocurrency fraud with suspicious links	Sublime Security	1mo ago Dec 1st, 2025	BEC/Fraud Social engineering Evasion Free subdomain host Scripting Content analysis Header analysis Javascript analysis Natural Language Understanding Sender analysis URL analysis URL screenshot Whois	/feeds/core/detection-rules/link-cryptocurrency-fraud-with-suspicious-links-d0da37ce
Link: Direct link to limewire hosted file	Sublime Security	5mo ago Aug 18th, 2025	Malware/Ransomware Free file host URL analysis Content analysis	/feeds/core/detection-rules/link-direct-link-to-limewire-hosted-file-70840d00
Link: Direct POWR.io Form Builder with suspicious patterns	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Callback Phishing Social engineering File analysis URL analysis Content analysis	/feeds/core/detection-rules/link-direct-powrio-form-builder-with-suspicious-patterns-fd37cc93
Link: Display text matches subject line	Sublime Security	2mo ago Nov 14th, 2025	BEC/Fraud Credential Phishing Social engineering Evasion Header analysis Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-display-text-matches-subject-line-ba722cf0
Link: Display text with excessive right-to-left mark characters	Sublime Security	2d ago Jan 21st, 2026	Credential Phishing Evasion Content analysis URL analysis	/feeds/core/detection-rules/link-display-text-with-excessive-right-to-left-mark-characters-a45cfd4c
Link: Excessive URL rewrite encoders	Sublime Security	2d ago Jan 21st, 2026	Credential Phishing Malware/Ransomware Encryption Evasion URL analysis Content analysis	/feeds/core/detection-rules/link-excessive-url-rewrite-encoders-b88e53a7
Link: Executable file download with suspicious message content	Sublime Security	3mo ago Oct 16th, 2025	Credential Phishing Malware/Ransomware Evasion Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis Header analysis	/feeds/core/detection-rules/link-executable-file-download-with-suspicious-message-content-ce9a4926
Link: File sharing impersonation with suspicious language and sending patterns	Sublime Security	2mo ago Oct 31st, 2025	BEC/Fraud Credential Phishing Social engineering Free subdomain host Impersonation: Brand Natural Language Understanding URL analysis Sender analysis Header analysis Content analysis	/feeds/core/detection-rules/link-file-sharing-impersonation-with-suspicious-language-and-sending-patterns-d3363041
Link: File sharing pretext with suspicious body and link	Sublime Security	3mo ago Oct 10th, 2025	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis URL analysis HTML analysis	/feeds/core/detection-rules/link-file-sharing-pretext-with-suspicious-body-and-link-c5718a8e
Link: Google Calendar invite linking to an open redirect from an untrusted freemail sender	Sublime Security	6mo ago Jul 16th, 2025	Spam Free email provider Free file host Open redirect Social engineering Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-google-calendar-invite-linking-to-an-open-redirect-from-an-untrusted-freemail-sender-bb4f1ea9
Link: HR impersonation with suspicious domain indicators and credential theft	Sublime Security	1mo ago Dec 3rd, 2025	Credential Phishing Impersonation: Employee Social engineering Lookalike domain Content analysis Natural Language Understanding Computer Vision URL analysis URL screenshot	/feeds/core/detection-rules/link-hr-impersonation-with-suspicious-domain-indicators-and-credential-theft-f31f8831
Link: /index.php enclosed in three asterisks	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Callback Phishing Social engineering Content analysis URL analysis	/feeds/core/detection-rules/link-indexphp-enclosed-in-three-asterisks-aa4bbafc
Link: Intuit link abuse with file share context	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering URL analysis Natural Language Understanding Content analysis Header analysis	/feeds/core/detection-rules/link-intuit-link-abuse-with-file-share-context-cd15cc34
Link: Invoice or receipt from freemail sender with customer service number	@vector_sec	11d ago Jan 12th, 2026	BEC/Fraud Callback Phishing Free email provider Impersonation: Brand Social engineering Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-invoice-or-receipt-from-freemail-sender-with-customer-service-number-3825232d
Link: IPv4-mapped IPv6 address obfuscation	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Content analysis URL analysis	/feeds/core/detection-rules/link-ipv4-mapped-ipv6-address-obfuscation-caacf30c
Link: Jensi file preview link from unsolicited sender	Sublime Security	11d ago Jan 12th, 2026	Callback Phishing Free file host Free subdomain host Content analysis URL analysis Sender analysis	/feeds/core/detection-rules/link-jensi-file-preview-link-from-unsolicited-sender-122b39f3
Link: Microsoft Dynamics 365 form phishing	Sublime Security	1mo ago Dec 5th, 2025	Credential Phishing Evasion Content analysis File analysis Optical Character Recognition Natural Language Understanding URL analysis URL screenshot	/feeds/core/detection-rules/link-microsoft-dynamics-365-form-phishing-f72b9085
Link: Microsoft impersonation using hosted png with suspicious link	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/link-microsoft-impersonation-using-hosted-png-with-suspicious-link-07c696d4
Link: Microsoft protected message with matching sender and recipient addresses	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Social engineering Content analysis File analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-microsoft-protected-message-with-matching-sender-and-recipient-addresses-a5a2f75d
Link: Multiple HTTP protocols in single URL	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion Content analysis URL analysis	/feeds/core/detection-rules/link-multiple-http-protocols-in-single-url-92f9d241
Link: Multistage landing - Abused Adobe frame.io	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Evasion Free file host Content analysis Whois Computer Vision URL analysis HTML analysis	/feeds/core/detection-rules/link-multistage-landing-abused-adobe-frameio-a6c457c5
Link: Multistage landing - Abused Docusign	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Evasion Free subdomain host Free file host Content analysis Sender analysis URL analysis Whois HTML analysis	/feeds/core/detection-rules/link-multistage-landing-abused-docusign-4189a645
Link: Multistage landing - Abused Google Drive	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Evasion Free email provider Free file host Content analysis Sender analysis URL analysis Whois HTML analysis	/feeds/core/detection-rules/link-multistage-landing-abused-google-drive-c86288b4
Link: Multistage landing - FreshDesk knowledge base abuse	Sublime Security	5mo ago Aug 21st, 2025	Credential Phishing Open redirect Impersonation: Brand Social engineering Content analysis Natural Language Understanding URL analysis URL screenshot	/feeds/core/detection-rules/link-multistage-landing-freshdesk-knowledge-base-abuse-edd6acf7
Link: Multistage landing - JotForm abuse	Sublime Security	1mo ago Dec 1st, 2025	Credential Phishing Evasion Social engineering Content analysis HTML analysis Javascript analysis URL analysis	/feeds/core/detection-rules/link-multistage-landing-jotform-abuse-5b64326f
Link: Multistage landing - Microsoft Forms abuse	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering HTML analysis URL analysis Content analysis	/feeds/core/detection-rules/link-multistage-landing-microsoft-forms-abuse-85a2cd12
Link: Multistage landing - Trello board abuse	Sublime Security	5mo ago Aug 20th, 2025	Credential Phishing Free file host Social engineering URL analysis Content analysis Sender analysis URL screenshot	/feeds/core/detection-rules/link-multistage-landing-trello-board-abuse-14a5b23a
Link: PDF and financial display text to free file host	Sublime Security	4mo ago Sep 24th, 2025	Credential Phishing Free file host Free email provider Social engineering Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-pdf-and-financial-display-text-to-free-file-host-b010740b
Link: Personal SharePoint with invalid recipients and credential theft language	Sublime Security	7h ago Jan 23rd, 2026	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-personal-sharepoint-with-invalid-recipients-and-credential-theft-language-79d5403d
Link: QR code in EML attachment with credential phishing indicators	Sublime Security	1mo ago Dec 2nd, 2025	Credential Phishing Evasion Open redirect QR code Computer Vision Content analysis File analysis QR code analysis	/feeds/core/detection-rules/link-qr-code-in-eml-attachment-with-credential-phishing-indicators-9908ed3a
Link: QR code with phishing disposition in img or pdf	Sublime Security	5mo ago Jul 30th, 2025	Credential Phishing QR code Social engineering Content analysis Computer Vision QR code analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-qr-code-with-phishing-disposition-in-img-or-pdf-8e8949f6
Link: QR Code with suspicious language (untrusted sender)	Sublime Security	5mo ago Jul 30th, 2025	Credential Phishing Impersonation: Brand QR code Social engineering Content analysis Computer Vision Natural Language Understanding QR code analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-qr-code-with-suspicious-language-untrusted-sender-25a84d1c
Link: Romance/Sexual Language With Suspicious Link	Sublime Security	5mo ago Aug 22nd, 2025	Spam Social engineering Content analysis Header analysis URL analysis Whois	/feeds/core/detection-rules/link-romancesexual-language-with-suspicious-link-d5694cae
Link: ScreenConnect installer with suspicious relay domain	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion Out of band pivot Social engineering URL analysis File analysis Content analysis	/feeds/core/detection-rules/link-screenconnect-installer-with-suspicious-relay-domain-37d21eef
Link: Secure SharePoint file share from new or unusual sender	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free file host Evasion Content analysis Sender analysis	/feeds/core/detection-rules/link-secure-sharepoint-file-share-from-new-or-unusual-sender-74ed3020
Link: Self-sender with sender org in subject and credential theft indicator	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Social engineering Evasion Natural Language Understanding Content analysis Sender analysis URL analysis Header analysis	/feeds/core/detection-rules/link-self-sender-with-sender-org-in-subject-and-credential-theft-indicator-bfa9aa08
Link: Self-sent message with quarterly document review request	Sublime Security	2d ago Jan 21st, 2026	BEC/Fraud Credential Phishing Social engineering Evasion Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/link-self-sent-message-with-quarterly-document-review-request-3c42cec6

438 Rules

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