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 Apr 24th, 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	9mo ago Jul 16th, 2025	Malware/Ransomware Encryption Evasion Impersonation: Brand PDF Archive analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis
Attachment: 7z Archive Containing RAR File	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Archive analysis File analysis
Attachment: Any HTML file (unsolicited)	Sublime Security	5mo ago Nov 3rd, 2025	HTML smuggling File analysis HTML analysis Sender analysis
Attachment: Any HTML file within archive (unsolicited)	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware Evasion HTML smuggling Archive analysis File analysis
Attachment: Any .sap file (unsolicited)	Sublime Security	5mo ago Oct 27th, 2025	Malware/Ransomware Evasion Scripting File analysis Header analysis Sender analysis
Attachment: Archive containing disallowed file type	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Archive analysis File analysis
Attachment: Archive containing HTML file with file scheme link	Sublime Security	1mo ago Mar 17th, 2026	Credential Phishing Evasion Exploit HTML smuggling Social engineering Archive analysis File analysis HTML analysis
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
Attachment: Archive with embedded CHM file	Sublime Security	3y ago Aug 21st, 2023	Malware/Ransomware Evasion Archive analysis File analysis
Attachment: Archive with embedded EXE file	Sublime Security	2y ago Feb 27th, 2024	Malware/Ransomware Evasion Archive analysis File analysis YARA
Attachment: Archive with pdf, txt and wsf files	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis File analysis
Attachment: Base64 encoded bash command in filename	@vector_sec	7mo ago Sep 5th, 2025	Malware/Ransomware Encryption Evasion Archive analysis File analysis Content analysis
Attachment: Calendar file with invisible Unicode characters	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Credential Phishing Malware/Ransomware Evasion File analysis Content analysis
Attachment: Calendar invite from recently registered domain	Sublime Security	7mo ago Sep 25th, 2025	Callback Phishing Evasion Social engineering File analysis Whois
Attachment: Calendar invite with Google redirect and invoice request	Sublime Security	16d ago Apr 8th, 2026	Credential Phishing BEC/Fraud Open redirect Social engineering File analysis Natural Language Understanding URL analysis
Attachment: Callback phishing solicitation via pdf file	Sublime Security	8mo 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
Attachment: Callback phishing solicitation via text-based file	Sublime Security	7mo ago Sep 22nd, 2025	Callback Phishing Evasion Out of band pivot Social engineering Content analysis File analysis Header analysis Sender analysis
Attachment: cmd file extension	Sublime Security	2mo ago Feb 9th, 2026	Malware/Ransomware Scripting Archive analysis File analysis
Attachment: Cold outreach with invitation subject and not attachment	Sublime Security	21d ago Apr 3rd, 2026	Spam Social engineering Image as content Content analysis Natural Language Understanding File analysis
Attachment: Compensation review lure with QR code	Sublime Security	10d ago Apr 14th, 2026	Credential Phishing PDF QR code Social engineering File analysis Optical Character Recognition QR code analysis Natural Language Understanding Sender analysis Header analysis
Attachment: Credit card application with WhatsApp contact	Sublime Security	5mo ago Nov 20th, 2025	BEC/Fraud Social engineering Out of band pivot Content analysis File analysis Natural Language Understanding QR code analysis
Attachment: .csproj with suspicious commands	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Scripting File analysis
Attachment: CVE-2021-40444 - MSHTML Remote Code Execution Vulnerability	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Exploit Macros Scripting Archive analysis Content analysis File analysis Macro analysis OLE analysis
Attachment: CVE-2023-21716 - Microsoft Office Remote Code Execution Vulnerability	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Exploit Content analysis File analysis
Attachment: CVE-2025-24071 - Microsoft Windows File Explorer Spoofing Vulnerability	Sublime Security	1y ago Mar 21st, 2025	Credential Phishing Scripting Macros Exploit Archive analysis Content analysis File analysis
Attachment: Decoy PDF author (Julie P.)	Sublime Security	8mo ago Aug 5th, 2025	Credential Phishing Impersonation: Brand PDF File analysis Content analysis Sender analysis
Attachment: DocuSign impersonation via PDF linking to new domain	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand PDF Social engineering Header analysis Sender analysis URL analysis File analysis Computer Vision Whois
Attachment: DOCX with hyperlink targeting recipient address	Sublime Security	4mo ago Dec 17th, 2025	Credential Phishing Malware/Ransomware Evasion Social engineering File analysis Archive analysis XML analysis
Attachment: Double base64-encoded zip file in HTML smuggling attachment	@ajpc500	8mo ago Aug 5th, 2025	Malware/Ransomware Credential Phishing Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Sender analysis
Attachment: Dropbox image lure with no Dropbox domains in links	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Optical Character Recognition Sender analysis
Attachment: EICAR string present	@ajpc500	8mo ago Aug 5th, 2025	Malware/Ransomware File analysis
Attachment: Embedded Javascript in SVG file	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Scripting Archive analysis File analysis Sender analysis XML analysis
Attachment: Embedded VBScript in MHT file (unsolicited)	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Scripting Archive analysis File analysis HTML analysis Sender analysis
Attachment: EML containing a base64 encoded script	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion HTML smuggling Scripting Social engineering File analysis HTML analysis Sender analysis
Attachment: EML file contains HTML attachment with login portal indicators	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Javascript analysis Sender analysis
Attachment: EML file with HTML attachment (unsolicited)	Sublime Security	8mo ago Aug 20th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Sender analysis
Attachment: EML file with IPFS links	Sublime Security	5mo ago Nov 4th, 2025	Credential Phishing Evasion Free file host Free subdomain host IPFS File analysis URL analysis
Attachment: EML with embedded Javascript in SVG file	Sublime Security	8mo ago Aug 8th, 2025	Credential Phishing Malware/Ransomware Scripting Evasion File analysis Javascript analysis Sender analysis
Attachment: EML with Encrypted ZIP	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Encryption Evasion Archive analysis File analysis YARA
Attachment: EML with link to credential phishing page	Sublime Security	9mo 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
Attachment: EML with QR code redirecting to Cloudflare challenges	Sublime Security	23d ago Apr 1st, 2026	Credential Phishing Malware/Ransomware Evasion QR code File analysis QR code analysis URL analysis Archive analysis
Attachment: EML with SharePoint files shared from GoDaddy federated tenants	Sublime Security	7mo ago Sep 23rd, 2025	Credential Phishing Evasion Impersonation: Brand Social engineering File analysis URL analysis Content analysis
Attachment: EML with Sharepoint link likely unrelated to sender	Sublime Security	7mo ago Sep 23rd, 2025	BEC/Fraud Credential Phishing Impersonation: Brand Social engineering Evasion File analysis URL analysis Header analysis Sender analysis
Attachment: EML with suspicious indicators	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion HTML smuggling Social engineering Content analysis File analysis
Attachment: Emotet heavily padded doc in zip file	Sublime Security	9mo ago Jul 16th, 2025	Malware/Ransomware Evasion Archive analysis Content analysis Exif analysis File analysis Sender analysis
Attachment: Employment contract update with suspicious file naming	Sublime Security	2mo ago Jan 28th, 2026	Malware/Ransomware Evasion Social engineering Content analysis File analysis
Attachment: Encrypted Microsoft Office file (unsolicited)	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Encryption Macros Scripting Archive analysis File analysis OLE analysis Sender analysis
Attachment: Encrypted PDF with credential theft body	Sublime Security	15d ago Apr 9th, 2026	Credential Phishing Encryption Evasion PDF Social engineering Content analysis Exif analysis File analysis Natural Language Understanding Sender analysis
Attachment: Encrypted ZIP containing VHDX file	Sublime Security	21d ago Apr 3rd, 2026	Malware/Ransomware Encryption Evasion Archive analysis File analysis
Attachment: Encrypted zip file with payment-related lure	Sublime Security	5mo ago Nov 25th, 2025	BEC/Fraud Malware/Ransomware Encryption Evasion Social engineering Archive analysis Content analysis File analysis

263 Rules

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