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
Attachment: ICS calendar file with QR code containing recipient email address	Sublime Security	4d ago Apr 20th, 2026	Credential Phishing QR code Social engineering Evasion File analysis QR code analysis URL analysis Content analysis
Attachment: ICS calendar file with recipient address in UID field	Sublime Security	4d ago Apr 20th, 2026	Credential Phishing Social engineering File analysis Content analysis
Attachment: ICS calendar with embedded file from internal sender with SPF failure	Sublime Security	6mo ago Oct 22nd, 2025	Credential Phishing Spoofing Evasion File analysis Header analysis Sender analysis
Attachment: ICS file with AWS Lambda URL	Sublime Security	23d ago Apr 1st, 2026	Credential Phishing Malware/Ransomware Evasion Free file host Content analysis File analysis URL analysis
Attachment: ICS file with excessive custom properties	Sublime Security	1mo ago Mar 17th, 2026	Malware/Ransomware Evasion File analysis Content analysis
Attachment: ICS file with links to newly registered domains	Sublime Security	4d ago Apr 20th, 2026	Credential Phishing Social engineering File analysis URL analysis Whois
Attachment: ICS file with meeting prefix	Sublime Security	2mo ago Jan 26th, 2026	BEC/Fraud Credential Phishing Social engineering File analysis Header analysis
Attachment: ICS file with non-Gregorian calendar scale	Sublime Security	5mo ago Nov 4th, 2025	Credential Phishing Evasion File analysis Content analysis
Attachment: ICS with embedded document	Sublime Security	7mo ago Sep 22nd, 2025	Malware/Ransomware Evasion File analysis
Attachment: ICS with embedded Javascript in SVG file	Sublime Security	2mo ago Jan 29th, 2026	Credential Phishing Malware/Ransomware Scripting Evasion File analysis Javascript analysis Sender analysis
Attachment: ICS with employee policy review lure	Sublime Security	1mo ago Mar 16th, 2026	Credential Phishing BEC/Fraud Evasion Social engineering File analysis Content analysis
Attachment: Invoice and W-9 PDFs with suspicious creators	Sublime Security	3mo ago Jan 21st, 2026	BEC/Fraud PDF Social engineering Impersonation: Brand File analysis Optical Character Recognition Exif analysis Content analysis
Attachment: JavaScript file with suspicious base64-encoded executable	Sublime Security	2y ago Apr 1st, 2024	Malware/Ransomware Evasion Scripting Archive analysis File analysis YARA
Attachment: Legal themed message or PDF with suspicious indicators	Sublime Security	21d ago Apr 3rd, 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
Attachment: Link file with UNC path	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion LNK File analysis
Attachment: Link to Doubleclick.net open redirect	Sublime Security	8mo ago Aug 5th, 2025	BEC/Fraud Credential Phishing Evasion Open redirect Social engineering Content analysis File analysis URL analysis
Attachment: LNK file	@ajpc500	3y ago Aug 21st, 2023	Malware/Ransomware LNK Archive analysis File analysis
Attachment: LNK with embedded content	@ajpc500	3mo ago Jan 12th, 2026	Malware/Ransomware Exploit LNK Scripting Content analysis Exif analysis File analysis
Attachment: Macro files containing MHT content	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Credential Phishing Evasion Macros Scripting Archive analysis File analysis Macro analysis
Attachment: Macro with suspected use of COM ShellBrowserWindow object for process creation	@ajpc500	3mo ago Jan 12th, 2026	Malware/Ransomware Macros Scripting Content analysis File analysis Macro analysis
Attachment: Malformed OLE file	Sublime Security	2y ago Nov 25th, 2024	Credential Phishing Malware/Ransomware Evasion File analysis YARA
Attachment: Malicious OneNote commands	@Kyle_Parrish_	3mo ago Jan 12th, 2026	Malware/Ransomware OneNote Scripting Archive analysis Content analysis File analysis YARA
Attachment: Microsoft 365 credential phishing	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Impersonation: Brand Social engineering Content analysis File analysis Header analysis Optical Character Recognition Sender analysis
Attachment: Microsoft impersonation via PDF with link and suspicious language	Sublime Security	9mo ago Jul 16th, 2025	Credential Phishing Malware/Ransomware Image as content Impersonation: Brand PDF Scripting Social engineering Computer Vision File analysis Header analysis Natural Language Understanding Sender analysis
Attachment: MSI installer file	@ajpc500	8mo ago Aug 5th, 2025	Malware/Ransomware Evasion Archive analysis File analysis
Attachment: MS Office or RTF file with Shell.Explorer.1 com object with embedded LNK	Sublime Security	2mo ago Jan 28th, 2026	Malware/Ransomware Evasion File analysis YARA
Attachment: Office document loads remote document template	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Archive analysis File analysis URL analysis
Attachment: Office document with VSTO add-in	@vector_sec	3mo ago Jan 12th, 2026	Malware/Ransomware Scripting Archive analysis Content analysis Exif analysis File analysis Sender analysis URL analysis
Attachment: Office file contains OLE relationship to credential phishing page	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering File analysis HTML analysis Natural Language Understanding OLE analysis URL analysis
Attachment: Office file with credential phishing URLs	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Evasion Social engineering File analysis URL analysis Archive analysis Content analysis
Attachment: Office file with document sharing and browser instruction lures	Sublime Security	2mo ago Jan 29th, 2026	Credential Phishing Social engineering Evasion Archive analysis File analysis Macro analysis Optical Character Recognition Content analysis
Attachment: Office file with suspicious function calls or downloaded file path	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion Scripting Archive analysis File analysis
Attachment: Password-protected PDF with fake document indicators	Sublime Security	3mo ago Jan 21st, 2026	Malware/Ransomware Credential Phishing Encryption Evasion PDF File analysis YARA Exif analysis
Attachment: PDF bid/proposal lure with credential theft indicators	Sublime Security	28d ago Mar 27th, 2026	BEC/Fraud Credential Phishing PDF Social engineering Free file host Free subdomain host File analysis Content analysis Optical Character Recognition Natural Language Understanding URL analysis Exif analysis
Attachment: PDF contains W9 or invoice YARA signatures	Sublime Security	1mo ago Mar 18th, 2026	BEC/Fraud Credential Phishing PDF Social engineering File analysis YARA
Attachment: PDF file with link to fake Bitcoin exchange	Sublime Security	3mo ago Jan 12th, 2026	BEC/Fraud Free email provider Impersonation: Brand PDF Social engineering Exif analysis File analysis Sender analysis URL analysis
Attachment: PDF file with low reputation links to suspicious filetypes (unsolicited)	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis File analysis Sender analysis
Attachment: PDF file with low reputation link to ZIP file (unsolicited)	Michael Tingle	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis File analysis Natural Language Understanding Sender analysis URL analysis
Attachment: PDF generated with wkhtmltopdf tool and default title	Sublime Security	4mo ago Dec 19th, 2025	BEC/Fraud Callback Phishing Credential Phishing Malware/Ransomware PDF Evasion File analysis Exif analysis
Attachment: PDF Object Hash - Encrypted PDFs with fake payment notification	Sublime Security	1mo ago Mar 2nd, 2026	Malware/Ransomware PDF Evasion File analysis Threat intelligence
Attachment: PDF proposal with credential theft indicators	Sublime Security	1mo ago Mar 17th, 2026	Credential Phishing PDF Social engineering Evasion File analysis Natural Language Understanding Optical Character Recognition URL analysis
Attachment: PDF with a suspicious string and single URL	Sublime Security	14d ago Apr 10th, 2026	Credential Phishing PDF Social engineering Evasion Content analysis File analysis URL analysis Exif analysis
Attachment: PDF with credential theft language and invalid reply-to domain	Sublime Security	14d ago Apr 10th, 2026	Credential Phishing PDF Social engineering Spoofing File analysis Header analysis Natural Language Understanding Content analysis
Attachment: PDF with credential theft language and link to a free subdomain (unsolicited)	Sublime Security	3mo ago Jan 12th, 2026	Credential Phishing Free subdomain host PDF Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Attachment: PDF with CVE-2026-34621 lures	Sublime Security	2d ago Apr 22nd, 2026	Malware/Ransomware PDF File analysis YARA
Attachment: PDF with JSFck obfuscation	Sublime Security	2d ago Apr 22nd, 2026	Malware/Ransomware Evasion PDF File analysis YARA
Attachment: PDF with link to DMG file download	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis Content analysis File analysis URL analysis
Attachment: PDF with link to zip containing a wsf file	Sublime Security	3mo ago Jan 12th, 2026	Malware/Ransomware Evasion PDF Archive analysis Content analysis File analysis URL analysis
Attachment: PDF with Microsoft Purview message impersonation	Sublime Security	5mo ago Nov 10th, 2025	Credential Phishing Impersonation: Brand PDF Social engineering File analysis Natural Language Understanding Content analysis
Attachment: PDF with multistage landing - ClickUp abuse	Sublime Security	1mo ago Feb 27th, 2026	Credential Phishing Evasion Free file host Free subdomain host PDF Social engineering File analysis URL analysis Whois

264 Rules

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