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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 Jul 17th, 2025

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Rule Name & Severity	Author	Last Updated	Labels
Attachment with VBA macros from employee impersonation (unsolicited)	Sublime Security	4d ago Jul 16th, 2025	Malware/Ransomware Impersonation: Employee Macros Social engineering Archive analysis File analysis Macro analysis Sender analysis	/feeds/core/detection-rules/attachment-with-vba-macros-from-employee-impersonation-unsolicited-9b262123
BEC: Employee impersonation with subject manipulation	Sublime Security	4d ago Jul 16th, 2025	BEC/Fraud Impersonation: Employee Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/bec-employee-impersonation-with-subject-manipulation-9adfc77b
Benefits Enrollment Impersonation	Sublime Security	4d ago Jul 16th, 2025	Credential Phishing Evasion Impersonation: Employee Out of band pivot Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/benefits-enrollment-impersonation-5a6eb5a8
Canva Infrastructure Abuse	Sublime Security	3mo ago Apr 1st, 2025	BEC/Fraud Callback Phishing Social engineering Impersonation: Brand Impersonation: Employee Free email provider Natural Language Understanding Sender analysis Content analysis	/feeds/core/detection-rules/canva-infrastructure-abuse-b69fdb5c
Corporate Services Impersonation Phishing	Sublime Security	4d ago Jul 16th, 2025	Credential Phishing Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/corporate-services-impersonation-phishing-3cd04f33
Employee Impersonation: Payroll Fraud	Sublime Security	4d ago Jul 16th, 2025	BEC/Fraud Impersonation: Employee Free email provider Social engineering Content analysis Sender analysis	/feeds/core/detection-rules/employee-impersonation-payroll-fraud-2beb7d85
Employee impersonation with urgent request (untrusted sender)	Sublime Security	12d ago Jul 8th, 2025	BEC/Fraud Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/employee-impersonation-with-urgent-request-untrusted-sender-1ce9a146
Impersonation: Human Resources with link or attachment and engaging language	Sublime Security	4d ago Jul 16th, 2025	BEC/Fraud Credential Phishing Impersonation: Employee Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/impersonation-human-resources-with-link-or-attachment-and-engaging-language-8c95a6a8
Link: SharePoint Filename Matches Org Name	Sublime Security	18d ago Jul 2nd, 2025	Credential Phishing Impersonation: Employee Social engineering Content analysis URL analysis	/feeds/core/detection-rules/link-sharepoint-filename-matches-org-name-cb954726
Sharepoint Link Likely Unrelated to Sender	Sublime Security	4mo ago Mar 12th, 2025	BEC/Fraud Credential Phishing Impersonation: Employee Lookalike domain OneNote PDF Social engineering URL analysis Sender analysis Header analysis HTML analysis	/feeds/core/detection-rules/sharepoint-link-likely-unrelated-to-sender-6870f489
Suspicious attachment with unscannable Cloudflare link	Sublime Security	4d ago Jul 16th, 2025	Credential Phishing Evasion PDF Social engineering Impersonation: Employee Impersonation: VIP File analysis URL analysis Sender analysis Content analysis Header analysis Natural Language Understanding	/feeds/core/detection-rules/suspicious-attachment-with-unscannable-cloudflare-link-00f92b6f
Suspicious Request for Financial Information	Sublime Security	4d ago Jul 16th, 2025	BEC/Fraud Free email provider Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Sender analysis	/feeds/core/detection-rules/suspicious-request-for-financial-information-4ebdaa4d
VIP Impersonation via Google Group relay with suspicious indicators	Sublime Security	1y ago May 3rd, 2024	BEC/Fraud Credential Phishing Malware/Ransomware Evasion Free email provider Impersonation: Employee Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-via-google-group-relay-with-suspicious-indicators-57f9cd3b
VIP impersonation with charitable donation fraud	Sublime Security	4d ago Jul 16th, 2025	BEC/Fraud Impersonation: Employee Impersonation: VIP Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/vip-impersonation-with-charitable-donation-fraud-35a56b8e