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 Feb 14th, 2026

Feed Source

GitHub

Attack Type is

Rule Name & Severity	Author	Last Updated	Labels
AnonymousFox indicators	Sublime Security	6mo ago Aug 5th, 2025	BEC/Fraud Credential Phishing Malware/Ransomware Header analysis Sender analysis	/feeds/core/detection-rules/anonymousfox-indicators-2506206e
Attachment: Adobe image lure in body or attachment with suspicious link	Sublime Security	1mo 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: Any HTML file within archive (unsolicited)	Sublime Security	1mo 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: Archive containing HTML file with file scheme link	Sublime Security	7mo 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: Calendar file with invisible Unicode characters	Sublime Security	1mo 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: Compensation review lure with QR code	Sublime Security	2mo 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: CVE-2025-24071 - Microsoft Windows File Explorer Spoofing Vulnerability	Sublime Security	11mo 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	6mo 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	1mo 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	2mo 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	6mo 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	7mo 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: EML containing a base64 encoded script	Sublime Security	1mo 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	1mo 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	6mo 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	3mo 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	6mo 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 link to credential phishing page	Sublime Security	7mo 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	1mo 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: Encrypted PDF with credential theft body	Sublime Security	2mo 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: Excel file with document sharing lure created by Go Excelize	Sublime Security	19d ago Jan 29th, 2026	Credential Phishing Macros Social engineering File analysis Macro analysis Content analysis Exif analysis	/feeds/core/detection-rules/attachment-excel-file-with-document-sharing-lure-created-by-go-excelize-dfaf267f
Attachment: Excel file with suspicious template identifier	Sublime Security	1mo 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	1mo 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 voicemail via PDF	Sublime Security	6mo 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: HTML attachment with Javascript location	@vector_sec	6mo ago Aug 5th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis	/feeds/core/detection-rules/attachment-html-attachment-with-javascript-location-e0611295
Attachment: HTML attachment with login portal indicators	@ajpc500	1mo ago Jan 12th, 2026	Credential Phishing HTML smuggling Scripting Archive analysis File analysis HTML analysis Javascript analysis Sender analysis	/feeds/core/detection-rules/attachment-html-attachment-with-login-portal-indicators-3aabf4a7
Attachment: HTML file contains exclusively Javascript	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis File analysis	/feeds/core/detection-rules/attachment-html-file-contains-exclusively-javascript-b6d38168
Attachment: HTML file with excessive 'const' declarations and abnormally long timeouts	Sublime Security	3mo ago Nov 3rd, 2025	Malware/Ransomware Credential Phishing HTML smuggling Scripting Evasion HTML analysis File analysis Content analysis	/feeds/core/detection-rules/attachment-html-file-with-excessive-const-declarations-and-abnormally-long-timeouts-66f8a07a
Attachment: HTML file with excessive padding and suspicious patterns	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling File analysis HTML analysis YARA	/feeds/core/detection-rules/attachment-html-file-with-excessive-padding-and-suspicious-patterns-0a6aee1e
Attachment: HTML file with reference to recipient and suspicious patterns	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing HTML smuggling Scripting Content analysis File analysis HTML analysis Javascript analysis YARA	/feeds/core/detection-rules/attachment-html-file-with-reference-to-recipient-and-suspicious-patterns-5333493d
Attachment: HTML smuggling 'body onload' linking to suspicious destination	Sublime Security	1mo 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 'body onload' with high entropy and suspicious text	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-body-onload-with-high-entropy-and-suspicious-text-329ac12d
Attachment: HTML smuggling Microsoft sign in	Sublime Security	1mo 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	1mo 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	1mo 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 atob and high entropy via calendar invite	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting File analysis HTML analysis Javascript analysis Sender analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-atob-and-high-entropy-via-calendar-invite-94d84614
Attachment: HTML smuggling with auto-downloaded file	Sublime Security	1mo 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: HTML smuggling with base64 encoded JavaScript function	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-base64-encoded-javascript-function-4e8a12ec
Attachment: HTML smuggling with base64 encoded ZIP file	Sublime Security	2mo ago Nov 20th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-base64-encoded-zip-file-47e388de
Attachment: HTML smuggling with concatenation obfuscation	@vector_sec	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-concatenation-obfuscation-108ab346
Attachment: HTML smuggling with decimal encoding	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-decimal-encoding-f99213c4
Attachment: HTML smuggling with embedded base64-encoded ISO	Sublime Security	3y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling ISO Archive analysis Content analysis File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-embedded-base64-encoded-iso-294ecd2d
Attachment: HTML smuggling with eval and atob	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-eval-and-atob-9f521ca2
Attachment: HTML smuggling with eval and atob via calendar invite	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-eval-and-atob-via-calendar-invite-597c2edd
Attachment: HTML smuggling with excessive line break obfuscation	Sublime Security	1mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-excessive-line-break-obfuscation-7e901440

620 Rules

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