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
Attachment: Adobe image lure in body or attachment with suspicious link	Sublime Security	18d ago Jan 5th, 2026	Credential Phishing Image as content Impersonation: Brand Content analysis Computer Vision Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/attachment-adobe-image-lure-in-body-or-attachment-with-suspicious-link-1d7add81
Attachment: Calendar invite with suspicious link leading to an open redirect	Sublime Security	6mo ago Jul 16th, 2025	Spam Free email provider Free file host Free subdomain host Open redirect Content analysis URL analysis	/feeds/core/detection-rules/attachment-calendar-invite-with-suspicious-link-leading-to-an-open-redirect-5d6294c7
Attachment: Callback phishing solicitation via image file	@vector_sec	11d ago Jan 12th, 2026	Callback Phishing Evasion Free email provider Out of band pivot Social engineering Image as content Content analysis Optical Character Recognition Sender analysis URL analysis Computer Vision	/feeds/core/detection-rules/attachment-callback-phishing-solicitation-via-image-file-60acbb36
Attachment: DocuSign impersonation via PDF linking to new domain	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF Social engineering Header analysis Sender analysis URL analysis File analysis Computer Vision Whois	/feeds/core/detection-rules/attachment-docusign-impersonation-via-pdf-linking-to-new-domain-f0c96282
Attachment: EML file with IPFS links	Sublime Security	2mo ago Nov 4th, 2025	Credential Phishing Evasion Free file host Free subdomain host IPFS File analysis URL analysis	/feeds/core/detection-rules/attachment-eml-file-with-ipfs-links-1fe9d7e7
Attachment: EML with link to credential phishing page	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Evasion Free file host Free subdomain host Social engineering Computer Vision Content analysis File analysis Header analysis HTML analysis Natural Language Understanding Optical Character Recognition URL analysis URL screenshot	/feeds/core/detection-rules/attachment-eml-with-link-to-credential-phishing-page-1df41cca
Attachment: EML with SharePoint files shared from GoDaddy federated tenants	Sublime Security	4mo ago Sep 23rd, 2025	Credential Phishing Evasion Impersonation: Brand Social engineering File analysis URL analysis Content analysis	/feeds/core/detection-rules/attachment-eml-with-sharepoint-files-shared-from-godaddy-federated-tenants-02c1f590
Attachment: EML with Sharepoint link likely unrelated to sender	Sublime Security	4mo ago Sep 23rd, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Evasion File analysis URL analysis Header analysis Sender analysis	/feeds/core/detection-rules/attachment-eml-with-sharepoint-link-likely-unrelated-to-sender-0a4fd31b
Attachment: Fake Slack installer	Sublime Security	3y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/attachment-fake-slack-installer-cded2d2f
Attachment: Fake voicemail via PDF	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing PDF QR code Social engineering Computer Vision Content analysis File analysis Optical Character Recognition QR code analysis URL analysis	/feeds/core/detection-rules/attachment-fake-voicemail-via-pdf-d3587209
Attachment: Fake Zoom installer	Sublime Security	3y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/attachment-fake-zoom-installer-840a12a6
Attachment: HTML smuggling 'body onload' linking to suspicious destination	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis URL analysis	/feeds/core/detection-rules/attachment-html-smuggling-body-onload-linking-to-suspicious-destination-c1e2beed
Attachment: HTML smuggling Microsoft sign in	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free subdomain host HTML smuggling Impersonation: Brand Social engineering Archive analysis Content analysis File analysis Header analysis Javascript analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-html-smuggling-microsoft-sign-in-878d6385
Attachment: HTML smuggling - QR Code with suspicious links	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing QR code Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/attachment-html-smuggling-qr-code-with-suspicious-links-010e757d
Attachment: HTML smuggling with atob and high entropy	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-atob-and-high-entropy-03fcac11
Attachment: HTML smuggling with auto-downloaded file	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-auto-downloaded-file-abf724f5
Attachment: Legal themed message or PDF with suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Extortion BEC/Fraud Evasion PDF Social engineering Content analysis File analysis Natural Language Understanding Optical Character Recognition URL analysis Whois Header analysis Exif analysis	/feeds/core/detection-rules/attachment-legal-themed-message-or-pdf-with-suspicious-indicators-19133301
Attachment: Link to Doubleclick.net open redirect	Sublime Security	5mo ago Aug 5th, 2025	BEC/Fraud Credential Phishing Evasion Open redirect Social engineering Content analysis File analysis URL analysis	/feeds/core/detection-rules/attachment-link-to-doubleclicknet-open-redirect-506c16cc
Attachment: Office document loads remote document template	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Archive analysis File analysis URL analysis	/feeds/core/detection-rules/attachment-office-document-loads-remote-document-template-d9601104
Attachment: Office document with VSTO add-in	@vector_sec	11d ago Jan 12th, 2026	Malware/Ransomware Scripting Archive analysis Content analysis Exif analysis File analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-office-document-with-vsto-add-in-27afa730
Attachment: Office file contains OLE relationship to credential phishing page	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Social engineering File analysis HTML analysis Natural Language Understanding OLE analysis URL analysis	/feeds/core/detection-rules/attachment-office-file-contains-ole-relationship-to-credential-phishing-page-d55793d0
Attachment: Office file with credential phishing URLs	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Social engineering File analysis URL analysis Archive analysis Content analysis	/feeds/core/detection-rules/attachment-office-file-with-credential-phishing-urls-b2cae98d
Attachment: PDF file with link to fake Bitcoin exchange	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Free email provider Impersonation: Brand PDF Social engineering Exif analysis File analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-pdf-file-with-link-to-fake-bitcoin-exchange-47601cb7
Attachment: PDF file with low reputation link to ZIP file (unsolicited)	Michael Tingle	11d ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis File analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/attachment-pdf-file-with-low-reputation-link-to-zip-file-unsolicited-d1ee2859
Attachment: PDF with credential theft language and link to a free subdomain (unsolicited)	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free subdomain host PDF Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/attachment-pdf-with-credential-theft-language-and-link-to-a-free-subdomain-unsolicited-90f4ef4e
Attachment: PDF with link to DMG file download	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis Content analysis File analysis URL analysis	/feeds/core/detection-rules/attachment-pdf-with-link-to-dmg-file-download-2c486fe0
Attachment: PDF with link to zip containing a wsf file	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis Content analysis File analysis URL analysis	/feeds/core/detection-rules/attachment-pdf-with-link-to-zip-containing-a-wsf-file-93bc7db4
Attachment: PDF with recipient email in link	Sublime Security	2d ago Jan 21st, 2026	Credential Phishing PDF QR code Encryption Social engineering File analysis QR code analysis URL analysis	/feeds/core/detection-rules/attachment-pdf-with-recipient-email-in-link-0399d08f
Attachment: PDF with suspicious language and redirect to suspicious file type	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Credential Phishing Evasion PDF File analysis Natural Language Understanding Optical Character Recognition URL analysis	/feeds/core/detection-rules/attachment-pdf-with-suspicious-language-and-redirect-to-suspicious-file-type-adda3c3f
Attachment: QR code with credential phishing indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing QR code Social engineering Computer Vision Header analysis Natural Language Understanding QR code analysis Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/attachment-qr-code-with-credential-phishing-indicators-9f1681e1
Attachment: QR code with recipient targeting and special characters	Sublime Security	2d ago Jan 21st, 2026	Credential Phishing QR code Social engineering Evasion File analysis QR code analysis URL analysis Computer Vision	/feeds/core/detection-rules/attachment-qr-code-with-recipient-targeting-and-special-characters-fc9e1c09
Attachment: RTF file with suspicious link	Sublime Security	6mo ago Jul 23rd, 2025	Credential Phishing Evasion Archive analysis File analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-rtf-file-with-suspicious-link-c848f9aa
Attachment: Small text file with link containing recipient email address	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Social engineering File analysis URL analysis	/feeds/core/detection-rules/attachment-small-text-file-with-link-containing-recipient-email-address-c0472c9d
Brand impersonation: AliExpress	Sublime Security	5mo ago Aug 5th, 2025	Callback Phishing Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-aliexpress-b14703d8
Brand impersonation: Chase bank with credential phishing indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-chase-bank-with-credential-phishing-indicators-d9577856
Brand impersonation: Coinbase with suspicious links	Sublime Security	4mo ago Sep 22nd, 2025	Credential Phishing Evasion Free subdomain host Image as content Impersonation: Brand Computer Vision Content analysis File analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-coinbase-with-suspicious-links-b61e2f8e
Brand impersonation: DocuSign	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Lookalike domain Social engineering Spoofing Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-docusign-4d29235c
Brand impersonation: DocuSign PDF attachment with suspicious link	Sublime Security	3mo ago Oct 22nd, 2025	Credential Phishing Impersonation: Brand PDF Social engineering File analysis Natural Language Understanding Optical Character Recognition URL analysis	/feeds/core/detection-rules/brand-impersonation-docusign-pdf-attachment-with-suspicious-link-2601cbb7
Brand impersonation: Fake DocuSign HTML table not linking to DocuSign domains	Sublime Security	1mo ago Dec 10th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis HTML analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-fake-docusign-html-table-not-linking-to-docusign-domains-28923dde
Brand impersonation: Fake Fax	Sublime Security	2d ago Jan 21st, 2026	Credential Phishing Impersonation: Brand Image as content Free file host Free subdomain host Social engineering Computer Vision Content analysis Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-fake-fax-2a96b90a
Brand Impersonation: Gemini Trust Company	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis URL analysis Sender analysis Header analysis	/feeds/core/detection-rules/brand-impersonation-gemini-trust-company-99574c94
Brand impersonation: Google Careers	Sublime Security	2mo ago Nov 12th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-google-careers-cf2d97ad
Brand impersonation: Google Drive fake file share	Sublime Security	1mo ago Dec 19th, 2025	Credential Phishing Malware/Ransomware Impersonation: Brand Social engineering Content analysis Header analysis URL analysis Computer Vision	/feeds/core/detection-rules/brand-impersonation-google-drive-fake-file-share-b424a941
Brand impersonation: Google fake sign-in warning	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-google-fake-sign-in-warning-2d998eee
Brand impersonation: Google Workspace alert notification	Sublime Security	1mo ago Dec 2nd, 2025	Credential Phishing Impersonation: Brand Social engineering Lookalike domain Header analysis Content analysis Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-google-workspace-alert-notification-143ffbc4
Brand impersonation: Microsoft logo or suspicious language with open redirect	Sublime Security	2y ago Mar 7th, 2024	BEC/Fraud Impersonation: Brand Open redirect Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-microsoft-logo-or-suspicious-language-with-open-redirect-27b8d8d8
Brand impersonation: Microsoft Planner with suspicious link	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Image as content Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-microsoft-planner-with-suspicious-link-ea363c08
Brand impersonation: Microsoft Teams invitation	Sublime Security	1mo ago Dec 15th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis HTML analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-microsoft-teams-invitation-46410ad8
Brand impersonation: Microsoft with low reputation links	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Free file host Image as content Impersonation: Brand Social engineering Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/brand-impersonation-microsoft-with-low-reputation-links-b59201b6
Brand impersonation: Navan	Sublime Security	4mo ago Sep 22nd, 2025	Credential Phishing Impersonation: Brand Social engineering Spoofing Sender analysis Natural Language Understanding URL analysis Content analysis	/feeds/core/detection-rules/brand-impersonation-navan-3573e9a8

369 Rules

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