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 Jun 18th, 2025

Feed Source

GitHub

Detection Method is

Rule Name & Severity	Author	Last Updated	Labels
Brand impersonation: Wise	Sublime Security	3mo ago Feb 20th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/brand-impersonation-wise-01480f95
Brand Impersonation: Zoom	Sublime Security	1mo ago May 15th, 2025	Credential Phishing Impersonation: Brand Social engineering Evasion Computer Vision Content analysis HTML analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/brand-impersonation-zoom-5abad540
Business Email Compromise (BEC) attempt from untrusted sender	Sublime Security	11mo ago Jun 24th, 2024	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/business-email-compromise-bec-attempt-from-untrusted-sender-96d4c35a
Business Email Compromise (BEC) with request for mobile number	Sublime Security	2mo ago Apr 4th, 2025	BEC/Fraud Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/business-email-compromise-bec-with-request-for-mobile-number-514ffd68
Callback Phishing: Branded invoice from sender/reply-to domain less than 30 days old	Sublime Security	1y ago Apr 25th, 2024	Callback Phishing Impersonation: Brand Out of band pivot Social engineering Header analysis Natural Language Understanding Optical Character Recognition Whois	/feeds/core/detection-rules/callback-phishing-branded-invoice-from-senderreply-to-domain-less-than-30-days-old-e6f4af53
Callback Phishing in body or attachment (untrusted sender)	Sublime Security	7mo ago Nov 5th, 2024	Callback Phishing Out of band pivot Social engineering Content analysis File analysis Optical Character Recognition Natural Language Understanding Sender analysis	/feeds/core/detection-rules/callback-phishing-in-body-or-attachment-untrusted-sender-b93c6f94
Callback Phishing via Calendar Invite	Sublime Security	2mo ago Apr 14th, 2025	Callback Phishing Social engineering Evasion File analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/callback-phishing-via-calendar-invite-95c84360
Callback Phishing via extensionless rfc822 attachment	Sublime Security	1y ago Apr 23rd, 2024	Callback Phishing Impersonation: Brand Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/callback-phishing-via-extensionless-rfc822-attachment-197722c4
Callback phishing via Google Group abuse	Sublime Security	1y ago Apr 23rd, 2024	Callback Phishing Free email provider Impersonation: Brand Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/callback-phishing-via-google-group-abuse-199d873b
Canva Design With Suspicious Embedded Link	Sublime Security	1mo ago May 16th, 2025	Credential Phishing Evasion Social engineering Free file host HTML analysis URL analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/canva-design-with-suspicious-embedded-link-02959e22
Canva Infrastructure Abuse	Sublime Security	2mo 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
Commonly abused sender TLD with engaging language	Sublime Security	10mo ago Aug 16th, 2024	Credential Phishing Social engineering File analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis	/feeds/core/detection-rules/commonly-abused-sender-tld-with-engaging-language-447386dc
Corporate Services Impersonation Phishing	Sublime Security	21d ago May 29th, 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
COVID-19 themed fraud with sender and reply-to mismatch or compensation award	Sublime Security	3mo ago Mar 4th, 2025	BEC/Fraud Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/covid-19-themed-fraud-with-sender-and-reply-to-mismatch-or-compensation-award-a16480ef
Credential Phishing: DocuSign embedded image lure with no DocuSign domains in links	Sublime Security	8mo ago Sep 26th, 2024	Credential Phishing Impersonation: Brand Social engineering Computer Vision Content analysis Header analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/credential-phishing-docusign-embedded-image-lure-with-no-docusign-domains-in-links-dfe8715e
Credential phishing: Email delivery failure impersonation	Sublime Security	13d ago Jun 6th, 2025	Credential Phishing Impersonation: Brand Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-email-delivery-failure-impersonation-ee318b89
Credential phishing: Engaging language and other indicators (untrusted sender)	Sublime Security	15h ago Jun 18th, 2025	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/credential-phishing-engaging-language-and-other-indicators-untrusted-sender-c2bc8ca2
Credential phishing: Engaging language with IPFS link	Sublime Security	1y ago May 3rd, 2024	Credential Phishing Free file host Free subdomain host IPFS Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/credential-phishing-engaging-language-with-ipfs-link-996c4d83
Credential Phishing: Fake Password Expiration from New and Unsolicited sender	Sublime Security	4mo ago Feb 11th, 2025	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-fake-password-expiration-from-new-and-unsolicited-sender-5d9c3a75
Credential Phishing: Image as content, short or no body contents	Sublime Security	2y ago Sep 8th, 2023	Credential Phishing Evasion Image as content Computer Vision Content analysis File analysis Header analysis Natural Language Understanding Optical Character Recognition	/feeds/core/detection-rules/credential-phishing-image-as-content-short-or-no-body-contents-01313f38
Credential phishing language and suspicious indicators (unknown sender)	Sublime Security	3mo ago Feb 24th, 2025	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/credential-phishing-language-and-suspicious-indicators-unknown-sender-89c186f7
Credential phishing: Onedrive impersonation	Sublime Security	15d ago Jun 4th, 2025	Credential Phishing Free subdomain host Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/credential-phishing-onedrive-impersonation-1f990c92
Credential phishing: 'Secure message' and engaging language	Sublime Security	13d ago Jun 6th, 2025	Credential Phishing Social engineering Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-secure-message-and-engaging-language-bd95a7b1
Credential Phishing: Suspicious language, link, recipients and other indicators	Sublime Security	1y ago Feb 23rd, 2024	Credential Phishing Evasion Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/credential-phishing-suspicious-language-link-recipients-and-other-indicators-dcb39190
Credential Phishing: Suspicious subject with urgent financial request and link	Sublime Security	9mo ago Sep 13th, 2024	Credential Phishing Impersonation: Brand Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/credential-phishing-suspicious-subject-with-urgent-financial-request-and-link-056464f4
Domain Impersonation: Freemail ReplyTo_Local Lookalike with Financial Request	Sublime Security	1y ago May 3rd, 2024	Credential Phishing Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/domain-impersonation-freemail-replytolocal-lookalike-with-financial-request-43026a40
EML attachment with credential theft language (unknown sender)	Sublime Security	7d ago Jun 12th, 2025	Credential Phishing Evasion Social engineering Natural Language Understanding Sender analysis Content analysis Header analysis	/feeds/core/detection-rules/eml-attachment-with-credential-theft-language-unknown-sender-00e06af1
Employee impersonation with urgent request (untrusted sender)	Sublime Security	11mo ago Jul 17th, 2024	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
Extortion / Sextortion in Attachment From Untrusted Sender	Sublime Security	17d ago Jun 2nd, 2025	Extortion Social engineering Spoofing Computer Vision Content analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/extortion-sextortion-in-attachment-from-untrusted-sender-3cb8d32c
Extortion / sextortion (untrusted sender)	Sublime Security	17d ago Jun 2nd, 2025	Extortion Social engineering Spoofing Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/extortion-sextortion-untrusted-sender-265913eb
Fake email quarantine notification	Sublime Security	3d ago Jun 16th, 2025	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/fake-email-quarantine-notification-73f26a3d
Fake message thread with a suspicious link and engaging language from an unknown sender	Sublime Security	1y ago Apr 23rd, 2024	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/fake-message-thread-with-a-suspicious-link-and-engaging-language-from-an-unknown-sender-8fd0e211
Fake request for tax preparation	Sublime Security	22d ago May 28th, 2025	BEC/Fraud Malware/Ransomware Social engineering Content analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/fake-request-for-tax-preparation-e36b85b3
Fake shipping notification with suspicious language	Sublime Security	1y ago May 3rd, 2024	Credential Phishing Spam Evasion Content analysis Natural Language Understanding	/feeds/core/detection-rules/fake-shipping-notification-with-suspicious-language-67748b0a
Fake thread with suspicious indicators	Sublime Security	10mo ago Aug 7th, 2024	BEC/Fraud Credential Phishing Spam Evasion Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/fake-thread-with-suspicious-indicators-c2e18a57
Fake voicemail notification (untrusted sender)	Sublime Security	23d ago May 27th, 2025	Credential Phishing Social engineering Content analysis Natural Language Understanding Sender analysis URL analysis	/feeds/core/detection-rules/fake-voicemail-notification-untrusted-sender-74ba7787
Free subdomain link with credential theft indicators	Sublime Security	6mo ago Dec 12th, 2024	Credential Phishing Free subdomain host Content analysis Header analysis Natural Language Understanding Optical Character Recognition URL analysis URL screenshot	/feeds/core/detection-rules/free-subdomain-link-with-credential-theft-indicators-9187479c
Google Accelerated Mobile Pages (AMP) abuse	Sublime Security	1y ago Apr 25th, 2024	Credential Phishing Malware/Ransomware Impersonation: Brand Open redirect Computer Vision Content analysis Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/google-accelerated-mobile-pages-amp-abuse-46907029
Google Drive abuse: Credential phishing link	Sublime Security	10mo ago Jul 31st, 2024	Credential Phishing Free file host Impersonation: Brand Computer Vision Natural Language Understanding Optical Character Recognition Sender analysis URL analysis URL screenshot	/feeds/core/detection-rules/google-drive-abuse-credential-phishing-link-c74aece0
Honorific greeting BEC attempt with sender and reply-to mismatch	Sublime Security	9mo ago Aug 27th, 2024	BEC/Fraud Free email provider Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/honorific-greeting-bec-attempt-with-sender-and-reply-to-mismatch-aa41b1b7
HR Impersonation via E-sign Agreement Comment	Sublime Security	1mo ago May 5th, 2025	BEC/Fraud Credential Phishing Evasion Impersonation: Brand Out of band pivot Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/hr-impersonation-via-e-sign-agreement-comment-796c6f0f
Impersonation: Human Resources with link or attachment and engaging language	Sublime Security	2mo ago Apr 14th, 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
Impersonation: Suspected supplier impersonation with suspicious content	Sublime Security	4mo ago Feb 3rd, 2025	BEC/Fraud Evasion Free email provider Lookalike domain Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis URL analysis Whois	/feeds/core/detection-rules/impersonation-suspected-supplier-impersonation-with-suspicious-content-63d8b1ce
Issuu Document With Suspicious Embedded Link	Sublime Security	1mo ago May 5th, 2025	Credential Phishing Social engineering Free file host Evasion URL analysis URL screenshot Natural Language Understanding Optical Character Recognition	/feeds/core/detection-rules/issuu-document-with-suspicious-embedded-link-0d73f43d
Job Scam (unsolicited sender)	Sublime Security	3mo ago Mar 10th, 2025	BEC/Fraud Social engineering Content analysis Header analysis Natural Language Understanding Sender analysis	/feeds/core/detection-rules/job-scam-unsolicited-sender-a37dc32d
Link: Adobe Share with Suspicious Indicators	Sublime Security	6mo ago Dec 3rd, 2024	Credential Phishing Evasion Free file host Content analysis URL screenshot Sender analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-adobe-share-with-suspicious-indicators-b33cae80
Link: Credential Phishing traversing Russian infrastructure	Sublime Security	11mo ago Jul 19th, 2024	Credential Phishing Social engineering Content analysis Header analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-credential-phishing-traversing-russian-infrastructure-a5203e3b
Link: Display Text Matches Subject Line	Sublime Security	1mo ago May 9th, 2025	BEC/Fraud Credential Phishing Social engineering Evasion Header analysis Content analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/link-display-text-matches-subject-line-ba722cf0
Link: Figma Design Deck With Credential Phishing Language	Sublime Security	1mo ago May 7th, 2025	Credential Phishing Evasion Free file host Social engineering Natural Language Understanding Computer Vision Optical Character Recognition URL analysis URL screenshot Sender analysis	/feeds/core/detection-rules/link-figma-design-deck-with-credential-phishing-language-87601924
Link: Microsoft Dynamics 365 form phishing	Sublime Security	7mo ago Nov 14th, 2024	Credential Phishing Evasion Content analysis File analysis Optical Character Recognition Natural Language Understanding URL analysis URL screenshot	/feeds/core/detection-rules/link-microsoft-dynamics-365-form-phishing-f72b9085