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 Oct 23rd, 2026

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Link to auto-downloaded file with Google Drive branding	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Impersonation: Brand Social engineering Content analysis File analysis Optical Character Recognition URL analysis URL screenshot
Link to auto-download of a suspicious file type (unsolicited)	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Encryption Evasion LNK Social engineering Archive analysis File analysis Sender analysis URL analysis YARA
Low reputation link to auto-downloaded HTML file with smuggling indicators	Sublime Security	2mo ago Jul 29th, 2026	Credential Phishing Evasion Free file host Free subdomain host HTML smuggling Impersonation: Brand Open redirect Social engineering Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis
macOS malware: Compiled AppleScript with document double-extension	Sublime Security	1mo ago Sep 23rd, 2026	Malware/Ransomware Evasion Social engineering File analysis Header analysis
MalwareBazaar: Malicious attachment hash in archive (trusted reporters)	Sublime Security	5mo ago Apr 29th, 2026	Malware/Ransomware Evasion Archive analysis File analysis Sender analysis Threat intelligence
MalwareBazaar: Malicious attachment hash (trusted reporters)	Sublime Security	7mo ago Mar 26th, 2026	Malware/Ransomware File analysis Sender analysis Threat intelligence
Malware: Pikabot delivery via URL auto-download	Sublime Security	1mo ago Sep 23rd, 2026	Malware/Ransomware Evasion Archive analysis File analysis Threat intelligence URL analysis
Non-RFC compliant calendar files from unsolicited sender	Sublime Security	5mo ago Apr 28th, 2026	Evasion ICS Phishing Social engineering Archive analysis Content analysis File analysis Sender analysis
Open Redirect: Google domain with /url path and suspicious indicators	Sublime Security	11d ago Oct 14th, 2026	Credential Phishing Evasion Open redirect Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis
Open redirect: Hakumonkai.org	Sublime Security	4mo ago Jun 1st, 2026	Credential Phishing Open redirect URL analysis File analysis
Open redirect: typedrawers.com	Sublime Security	1y ago May 23rd, 2025	Credential Phishing Evasion Open redirect QR code Social engineering Content analysis File analysis QR code analysis Sender analysis
PDF attachment with Google (AE) redirecting to a php or zip file	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Open redirect PDF Content analysis File analysis URL analysis
Prompt injection: Instructions to an AI in a calendar invite	Sublime Security	4d ago Oct 21st, 2026	BEC/Fraud Evasion Social engineering Content analysis File analysis Natural Language Understanding Sender analysis
QR code to auto-download of a suspicious file type (unsolicited)	Sublime Security	1mo ago Sep 23rd, 2026	Malware/Ransomware Evasion LNK Social engineering Archive analysis File analysis Sender analysis URL analysis QR code analysis
Request for Quote or Purchase (RFQ\|RFP) with HTML smuggling attachment	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Evasion Content analysis File analysis HTML analysis Javascript analysis Natural Language Understanding URL analysis
Service abuse: Citrix ShareFile impersonation via Outlook plugin	Sublime Security	4mo ago Jun 5th, 2026	BEC/Fraud Credential Phishing Free file host Social engineering File analysis Content analysis
Service abuse: Monday.com infrastructure with phishing intent	Sublime Security	25d ago Sep 30th, 2026	Credential Phishing Evasion Social engineering QR code Content analysis File analysis Header analysis QR code analysis Sender analysis URL analysis
Spam: Unsolicited malformed PDF	Sublime Security	1y ago Jul 16th, 2025	Spam Evasion Free email provider PDF Content analysis File analysis Sender analysis
Stripe invoice abuse	Sublime Security	3mo ago Jul 14th, 2026	BEC/Fraud Callback Phishing PDF File analysis Header analysis
Suspicious attachment: Duplicate decoy PDF files	Sublime Security	1y ago Aug 5th, 2025	Credential Phishing Evasion PDF File analysis Optical Character Recognition
Suspicious attachment with unscannable Cloudflare link	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Evasion PDF Social engineering Impersonation: Employee Impersonation: VIP File analysis URL analysis Sender analysis Content analysis Header analysis Natural Language Understanding
Suspicious invoice reference with missing or image-only attachments	Sublime Security	1mo ago Sep 23rd, 2026	Credential Phishing Social engineering Content analysis Computer Vision File analysis Natural Language Understanding Sender analysis
Suspicious VBA macros from untrusted sender	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Macros File analysis Macro analysis Sender analysis
URI protocol handler: search-ms	Sublime Security	9mo ago Jan 12th, 2026	Malware/Ransomware Evasion File analysis HTML analysis
URLhaus: Malicious domain in message body or pdf attachment (trusted reporters)	Sublime Security	9mo ago Jan 12th, 2026	Credential Phishing Malware/Ransomware PDF File analysis Threat intelligence URL analysis
X (Twitter) impersonation with credential phishing motives	Sublime Security	5mo ago May 15th, 2026	Credential Phishing Impersonation: Brand Social engineering Computer Vision File analysis Header analysis Optical Character Recognition Natural Language Understanding Sender analysis

376 Rules

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