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
Adobe branded PDF file linking to a password-protected file from untrusted sender	Sublime Security	6mo ago Jul 16th, 2025	Malware/Ransomware Encryption Evasion Impersonation: Brand PDF Archive analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/adobe-branded-pdf-file-linking-to-a-password-protected-file-from-untrusted-sender-5ea75469
Attachment: 7z Archive Containing RAR File	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-7z-archive-containing-rar-file-1a629bb4
Attachment: Any HTML file (unsolicited)	Sublime Security	2mo ago Nov 3rd, 2025	HTML smuggling File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-any-html-file-unsolicited-ef36763f
Attachment: Any HTML file within archive (unsolicited)	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Archive analysis File analysis	/feeds/core/detection-rules/attachment-any-html-file-within-archive-unsolicited-6a67c02c
Attachment: Any .sap file (unsolicited)	Sublime Security	2mo ago Oct 27th, 2025	Malware/Ransomware Evasion Scripting File analysis Header analysis Sender analysis	/feeds/core/detection-rules/attachment-any-sap-file-unsolicited-220ed3de
Attachment: Archive containing disallowed file type	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-archive-containing-disallowed-file-type-3859e3e7
Attachment: Archive containing HTML file with file scheme link	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Evasion Exploit HTML smuggling Social engineering Archive analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-archive-containing-html-file-with-file-scheme-link-edf6d0d9
Attachment: Archive contains DLL-loading macro	Sublime Security	3y ago Dec 28th, 2023	Malware/Ransomware Exploit LNK Macros Scripting Archive analysis File analysis Macro analysis YARA	/feeds/core/detection-rules/attachment-archive-contains-dll-loading-macro-3a193f5f
Attachment: Archive with embedded CHM file	Sublime Security	3y ago Aug 21st, 2023	Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-archive-with-embedded-chm-file-5280e94d
Attachment: Archive with embedded EXE file	Sublime Security	2y ago Feb 27th, 2024	Malware/Ransomware Evasion Archive analysis File analysis YARA	/feeds/core/detection-rules/attachment-archive-with-embedded-exe-file-e2b0ad86
Attachment: Archive with pdf, txt and wsf files	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis File analysis	/feeds/core/detection-rules/attachment-archive-with-pdf-txt-and-wsf-files-16b2e239
Attachment: Base64 encoded bash command in filename	@vector_sec	4mo ago Sep 5th, 2025	Malware/Ransomware Encryption Evasion Archive analysis File analysis Content analysis	/feeds/core/detection-rules/attachment-base64-encoded-bash-command-in-filename-819f69c8
Attachment: Calendar file with invisible Unicode characters	Sublime Security	11d ago Jan 12th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Evasion File analysis Content analysis	/feeds/core/detection-rules/attachment-calendar-file-with-invisible-unicode-characters-050fceac
Attachment: Calendar invite from recently registered domain	Sublime Security	4mo ago Sep 25th, 2025	Callback Phishing Evasion Social engineering File analysis Whois	/feeds/core/detection-rules/attachment-calendar-invite-from-recently-registered-domain-d801521c
Attachment: Callback phishing solicitation via pdf file	Sublime Security	5mo ago Aug 5th, 2025	Callback Phishing Evasion Free email provider Out of band pivot PDF Social engineering Exif analysis File analysis Optical Character Recognition Sender analysis	/feeds/core/detection-rules/attachment-callback-phishing-solicitation-via-pdf-file-ac33f097
Attachment: Callback phishing solicitation via text-based file	Sublime Security	4mo ago Sep 22nd, 2025	Callback Phishing Evasion Out of band pivot Social engineering Content analysis File analysis Header analysis Sender analysis	/feeds/core/detection-rules/attachment-callback-phishing-solicitation-via-text-based-file-ca39c83a
Attachment: Compensation review lure with QR code	Sublime Security	1mo ago Dec 10th, 2025	Credential Phishing PDF QR code Social engineering File analysis Optical Character Recognition QR code analysis Natural Language Understanding Sender analysis Header analysis	/feeds/core/detection-rules/attachment-compensation-review-lure-with-qr-code-9fd8185c
Attachment: Credit card application with WhatsApp contact	Sublime Security	2mo ago Nov 20th, 2025	BEC/Fraud Social engineering Out of band pivot Content analysis File analysis Natural Language Understanding QR code analysis	/feeds/core/detection-rules/attachment-credit-card-application-with-whatsapp-contact-95b08315
Attachment: .csproj with suspicious commands	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion Scripting File analysis	/feeds/core/detection-rules/attachment-csproj-with-suspicious-commands-fe45b81d
Attachment: CVE-2021-40444 - MSHTML Remote Code Execution Vulnerability	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Exploit Macros Scripting Archive analysis Content analysis File analysis Macro analysis OLE analysis	/feeds/core/detection-rules/attachment-cve-2021-40444-mshtml-remote-code-execution-vulnerability-8cefcf7f
Attachment: CVE-2023-21716 - Microsoft Office Remote Code Execution Vulnerability	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Exploit Content analysis File analysis	/feeds/core/detection-rules/attachment-cve-2023-21716-microsoft-office-remote-code-execution-vulnerability-23714cca
Attachment: CVE-2025-24071 - Microsoft Windows File Explorer Spoofing Vulnerability	Sublime Security	10mo ago Mar 21st, 2025	Credential Phishing Scripting Macros Exploit Archive analysis Content analysis File analysis	/feeds/core/detection-rules/attachment-cve-2025-24071-microsoft-windows-file-explorer-spoofing-vulnerability-2e69fa0b
Attachment: Decoy PDF author (Julie P.)	Sublime Security	5mo ago Aug 5th, 2025	Credential Phishing Impersonation: Brand PDF File analysis Content analysis Sender analysis	/feeds/core/detection-rules/attachment-decoy-pdf-author-julie-p-4324213a
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: DOCX with hyperlink targeting recipient address	Sublime Security	1mo ago Dec 17th, 2025	Credential Phishing Malware/Ransomware Evasion Social engineering File analysis Archive analysis XML analysis	/feeds/core/detection-rules/attachment-docx-with-hyperlink-targeting-recipient-address-9ec8fa49
Attachment: Double base64-encoded zip file in HTML smuggling attachment	@ajpc500	5mo ago Aug 5th, 2025	Malware/Ransomware Credential Phishing Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-double-base64-encoded-zip-file-in-html-smuggling-attachment-61ebb07b
Attachment: Dropbox image lure with no Dropbox domains in links	Sublime Security	6mo ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Optical Character Recognition Sender analysis	/feeds/core/detection-rules/attachment-dropbox-image-lure-with-no-dropbox-domains-in-links-500eee2d
Attachment: EICAR string present	@ajpc500	5mo ago Aug 5th, 2025	Malware/Ransomware File analysis	/feeds/core/detection-rules/attachment-eicar-string-present-592e2319
Attachment: Embedded Javascript in SVG file	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Scripting Archive analysis File analysis Sender analysis XML analysis	/feeds/core/detection-rules/attachment-embedded-javascript-in-svg-file-f70293bc
Attachment: Embedded VBScript in MHT file (unsolicited)	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Evasion Scripting Archive analysis File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-embedded-vbscript-in-mht-file-unsolicited-b30353a6
Attachment: EML containing a base64 encoded script	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion HTML smuggling Scripting Social engineering File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-eml-containing-a-base64-encoded-script-fc3d9445
Attachment: EML file contains HTML attachment with login portal indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Javascript analysis Sender analysis	/feeds/core/detection-rules/attachment-eml-file-contains-html-attachment-with-login-portal-indicators-6e4df158
Attachment: EML file with HTML attachment (unsolicited)	Sublime Security	5mo ago Aug 20th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-eml-file-with-html-attachment-unsolicited-c24fd191
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 embedded Javascript in SVG file	Sublime Security	5mo ago Aug 8th, 2025	Credential Phishing Malware/Ransomware Scripting Evasion File analysis Javascript analysis Sender analysis	/feeds/core/detection-rules/attachment-eml-with-embedded-javascript-in-svg-file-dfafb78f
Attachment: EML with Encrypted ZIP	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Encryption Evasion Archive analysis File analysis YARA	/feeds/core/detection-rules/attachment-eml-with-encrypted-zip-6897a8f7
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: EML with suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion HTML smuggling Social engineering Content analysis File analysis	/feeds/core/detection-rules/attachment-eml-with-suspicious-indicators-deb5d08d
Attachment: Emotet heavily padded doc in zip file	Sublime Security	6mo ago Jul 16th, 2025	Malware/Ransomware Evasion Archive analysis Content analysis Exif analysis File analysis Sender analysis	/feeds/core/detection-rules/attachment-emotet-heavily-padded-doc-in-zip-file-9a5332ed
Attachment: Encrypted Microsoft Office file (unsolicited)	Sublime Security	11d ago Jan 12th, 2026	Malware/Ransomware Encryption Macros Scripting Archive analysis File analysis OLE analysis Sender analysis	/feeds/core/detection-rules/attachment-encrypted-microsoft-office-file-unsolicited-1e47e953
Attachment: Encrypted PDF with credential theft body	Sublime Security	1mo ago Dec 1st, 2025	Credential Phishing Encryption Evasion PDF Social engineering Content analysis Exif analysis File analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/attachment-encrypted-pdf-with-credential-theft-body-c9596c9a
Attachment: Encrypted zip file with payment-related lure	Sublime Security	1mo ago Nov 25th, 2025	BEC/Fraud Malware/Ransomware Encryption Evasion Social engineering Archive analysis Content analysis File analysis	/feeds/core/detection-rules/attachment-encrypted-zip-file-with-payment-related-lure-5d1eb7af
Attachment: Excel file with suspicious template identifier	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Evasion Macros Exif analysis File analysis	/feeds/core/detection-rules/attachment-excel-file-with-suspicious-template-identifier-40f84b4b
Attachment: Excel Web Query File (IQY)	@jkcoote	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-excel-web-query-file-iqy-510412b5
Attachment: Fake attachment image lure	Sublime Security	4mo ago Sep 22nd, 2025	Credential Phishing Malware/Ransomware Evasion Image as content Social engineering File analysis Natural Language Understanding Optical Character Recognition	/feeds/core/detection-rules/attachment-fake-attachment-image-lure-96b8b285
Attachment: Fake scan-to-email	Sublime Security	4mo ago Sep 22nd, 2025	Credential Phishing Free file host Image as content PDF Social engineering Content analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/attachment-fake-scan-to-email-ea850cc1
Attachment: Fake secure message and suspicious indicators	Sublime Security	11d ago Jan 12th, 2026	Credential Phishing Image as content Impersonation: Brand Social engineering Content analysis File analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/attachment-fake-secure-message-and-suspicious-indicators-20a34d94
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

224 Rules

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