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 Mar 21st, 2025

Feed Source

GitHub

Attack Type is

Rule Name & Severity	Author	Last Updated	Labels
Adobe branded PDF file linking to a password-protected file from untrusted sender	Sublime Security	1y ago Feb 23rd, 2024	Malware/Ransomware Encryption Evasion Impersonation: Brand PDF Archive analysis File analysis Natural Language Understanding Optical Character Recognition Sender analysis	/feeds/core/detection-rules/adobe-branded-pdf-file-linking-to-a-password-protected-file-from-untrusted-sender-5ea75469
AnonymousFox Indicators	Sublime Security	8mo ago Jul 19th, 2024	BEC/Fraud Credential Phishing Malware/Ransomware Header analysis Sender analysis	/feeds/core/detection-rules/anonymousfox-indicators-2506206e
Attachment: Any HTML file within archive (unsolicited)	Sublime Security	2y ago Nov 14th, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Archive analysis File analysis	/feeds/core/detection-rules/attachment-any-html-file-within-archive-unsolicited-6a67c02c
Attachment: Archive containing disallowed file type	Sublime Security	6mo ago Sep 18th, 2024	Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-archive-containing-disallowed-file-type-3859e3e7
Attachment: Archive contains DLL-loading macro	Sublime Security	2y ago Dec 28th, 2023	Malware/Ransomware Exploit LNK Macros Scripting Archive analysis File analysis Macro analysis YARA	/feeds/core/detection-rules/attachment-archive-contains-dll-loading-macro-3a193f5f
Attachment: Archive with embedded CHM file	Sublime Security	2y ago Aug 21st, 2023	Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-archive-with-embedded-chm-file-5280e94d
Attachment: Archive with embedded EXE file	Sublime Security	1y ago Feb 27th, 2024	Malware/Ransomware Evasion Archive analysis File analysis YARA	/feeds/core/detection-rules/attachment-archive-with-embedded-exe-file-e2b0ad86
Attachment: Archive with pdf, txt and wsf files	Sublime Security	2y ago Aug 21st, 2023	Malware/Ransomware Evasion PDF Archive analysis File analysis	/feeds/core/detection-rules/attachment-archive-with-pdf-txt-and-wsf-files-16b2e239
Attachment: .csproj with suspicious commands	Sublime Security	2y ago Aug 17th, 2023	Malware/Ransomware Evasion Scripting File analysis	/feeds/core/detection-rules/attachment-csproj-with-suspicious-commands-fe45b81d
Attachment: CVE-2021-40444 - MSHTML Remote Code Execution Vulnerability	Sublime Security	2y ago Dec 19th, 2023	Malware/Ransomware Exploit Macros Scripting Archive analysis Content analysis File analysis Macro analysis OLE analysis	/feeds/core/detection-rules/attachment-cve-2021-40444-mshtml-remote-code-execution-vulnerability-8cefcf7f
Attachment: CVE-2023-21716 - Microsoft Office Remote Code Execution Vulnerability	Sublime Security	2y ago Dec 19th, 2023	Malware/Ransomware Exploit Content analysis File analysis	/feeds/core/detection-rules/attachment-cve-2023-21716-microsoft-office-remote-code-execution-vulnerability-23714cca
Attachment: DocX embedded Binary	Sublime Security	12mo ago Mar 26th, 2024	Malware/Ransomware Evasion Archive analysis Content analysis YARA	/feeds/core/detection-rules/attachment-docx-embedded-binary-feff0241
Attachment: Double Base64-encoded Zip File in HTML Smuggling Attachment	@ajpc500	2y ago Oct 4th, 2023	Malware/Ransomware Credential Phishing Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-double-base64-encoded-zip-file-in-html-smuggling-attachment-61ebb07b
Attachment: EICAR String Present	@ajpc500	2y ago Aug 21st, 2023	Malware/Ransomware File analysis	/feeds/core/detection-rules/attachment-eicar-string-present-592e2319
Attachment: Embedded Javascript in SVG file (unsolicited)	Sublime Security	18d ago Mar 5th, 2025	Malware/Ransomware Scripting Archive analysis File analysis Sender analysis XML analysis	/feeds/core/detection-rules/attachment-embedded-javascript-in-svg-file-unsolicited-f70293bc
Attachment: Embedded VBScript in MHT file (unsolicited)	Sublime Security	2y ago Oct 4th, 2023	Malware/Ransomware Evasion Scripting Archive analysis File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-embedded-vbscript-in-mht-file-unsolicited-b30353a6
Attachment: EML file with HTML attachment (unsolicited)	Sublime Security	2mo ago Jan 14th, 2025	Credential Phishing Malware/Ransomware Evasion HTML smuggling Content analysis File analysis Header analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-eml-file-with-html-attachment-unsolicited-c24fd191
Attachment: EML with Embedded Javascript in SVG File (unsolicited)	Sublime Security	19d ago Mar 4th, 2025	Credential Phishing Malware/Ransomware Scripting Evasion File analysis Javascript analysis Sender analysis	/feeds/core/detection-rules/attachment-eml-with-embedded-javascript-in-svg-file-unsolicited-dfafb78f
Attachment: Emotet heavily padded doc in zip file	Sublime Security	2y ago Oct 4th, 2023	Malware/Ransomware Evasion Archive analysis Content analysis Exif analysis File analysis Sender analysis	/feeds/core/detection-rules/attachment-emotet-heavily-padded-doc-in-zip-file-9a5332ed
Attachment: Encrypted Microsoft Office file (unsolicited)	Sublime Security	2y ago Dec 19th, 2023	Malware/Ransomware Encryption Macros Scripting Archive analysis File analysis OLE analysis Sender analysis	/feeds/core/detection-rules/attachment-encrypted-microsoft-office-file-unsolicited-1e47e953
Attachment: Excel Web Query File (IQY)	@jkcoote	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-excel-web-query-file-iqy-510412b5
Attachment: Fake attachment image lure	Sublime Security	8mo ago Jul 19th, 2024	Credential Phishing Malware/Ransomware Evasion Image as content Social engineering File analysis Natural Language Understanding Optical Character Recognition	/feeds/core/detection-rules/attachment-fake-attachment-image-lure-96b8b285
Attachment: Fake Slack installer	Sublime Security	2y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/attachment-fake-slack-installer-cded2d2f
Attachment: Fake Zoom installer	Sublime Security	2y ago Nov 29th, 2023	Malware/Ransomware Evasion HTML smuggling Impersonation: Brand Scripting Social engineering Archive analysis Computer Vision File analysis HTML analysis Natural Language Understanding URL analysis	/feeds/core/detection-rules/attachment-fake-zoom-installer-840a12a6
Attachment: File execution via Javascript	Sublime Security	2y ago Dec 19th, 2023	Malware/Ransomware Evasion Scripting Archive analysis File analysis Javascript analysis Sender analysis	/feeds/core/detection-rules/attachment-file-execution-via-javascript-627ae0b1
Attachment: Filename Containing Unicode Braille Pattern Blank Character	@vector_sec	1mo ago Feb 20th, 2025	Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-filename-containing-unicode-braille-pattern-blank-character-c230ca86
Attachment: Filename Containing Unicode Right-to-Left Override Character	@vector_sec	2y ago Aug 21st, 2023	Malware/Ransomware Evasion Archive analysis File analysis	/feeds/core/detection-rules/attachment-filename-containing-unicode-right-to-left-override-character-357c57a1
Attachment: HTML Attachment with Javascript location	@vector_sec	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis	/feeds/core/detection-rules/attachment-html-attachment-with-javascript-location-e0611295
Attachment: HTML file contains exclusively Javascript	Sublime Security	1y ago Feb 1st, 2024	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis File analysis	/feeds/core/detection-rules/attachment-html-file-contains-exclusively-javascript-b6d38168
Attachment: HTML file with excessive 'const' declarations and abnormally long timeouts	Sublime Security	1mo ago Feb 3rd, 2025	Malware/Ransomware Credential Phishing HTML smuggling Scripting Evasion HTML analysis File analysis Content analysis	/feeds/core/detection-rules/attachment-html-file-with-excessive-const-declarations-and-abnormally-long-timeouts-66f8a07a
Attachment: HTML file with excessive padding and suspicious patterns	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling File analysis HTML analysis YARA	/feeds/core/detection-rules/attachment-html-file-with-excessive-padding-and-suspicious-patterns-0a6aee1e
Attachment: HTML smuggling 'body onload' linking to suspicious destination	Sublime Security	2y ago Sep 22nd, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis URL analysis	/feeds/core/detection-rules/attachment-html-smuggling-body-onload-linking-to-suspicious-destination-c1e2beed
Attachment: HTML smuggling 'body onload' with high entropy and suspicious text	Sublime Security	2y ago Sep 25th, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-body-onload-with-high-entropy-and-suspicious-text-329ac12d
Attachment: HTML smuggling with atob and high entropy	Sublime Security	6mo ago Aug 29th, 2024	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-atob-and-high-entropy-03fcac11
Attachment: HTML smuggling with auto-downloaded file	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis Sender analysis URL analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-auto-downloaded-file-abf724f5
Attachment: HTML smuggling with base64 encoded JavaScript function	Sublime Security	2y ago Aug 27th, 2023	Credential Phishing Malware/Ransomware HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-base64-encoded-javascript-function-4e8a12ec
Attachment: HTML smuggling with concatenation obfuscation	@vector_sec	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-concatenation-obfuscation-108ab346
Attachment: HTML smuggling with decimal encoding	Sublime Security	11mo ago Apr 23rd, 2024	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-decimal-encoding-f99213c4
Attachment: HTML smuggling with embedded base64-encoded executable	Sublime Security	12mo ago Mar 25th, 2024	Malware/Ransomware Evasion HTML smuggling Archive analysis File analysis HTML analysis YARA	/feeds/core/detection-rules/attachment-html-smuggling-with-embedded-base64-encoded-executable-b00c4527
Attachment: HTML smuggling with embedded base64-encoded ISO	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling ISO Archive analysis Content analysis File analysis HTML analysis Sender analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-embedded-base64-encoded-iso-294ecd2d
Attachment: HTML smuggling with embedded base64 streamed file download	Sublime Security	2y ago Aug 21st, 2023	Malware/Ransomware HTML smuggling Scripting Social engineering Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-embedded-base64-streamed-file-download-e04de4e2
Attachment: HTML smuggling with eval and atob	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-eval-and-atob-9f521ca2
Attachment: HTML smuggling with excessive line break obfuscation	Sublime Security	2y ago Sep 8th, 2023	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-excessive-line-break-obfuscation-7e901440
Attachment: HTML smuggling with fromCharCode and other signals	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-fromcharcode-and-other-signals-a68ce0ef
Attachment: HTML smuggling with hex strings	@ajpc500	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-hex-strings-b4208ed6
Attachment: HTML smuggling with high entropy and other signals	Sublime Security	2y ago Aug 21st, 2023	Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-high-entropy-and-other-signals-be157288
Attachment: HTML smuggling with raw array buffer	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion Free subdomain host HTML smuggling Archive analysis Content analysis File analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-raw-array-buffer-a0d5c3dc
Attachment: HTML smuggling with RC4 decryption	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-rc4-decryption-3a46d765
Attachment: HTML smuggling with ROT13	@Kyle_Parrish_	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Encryption Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis Javascript analysis HTML analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-rot13-6eacc4cf
Attachment: HTML smuggling with setTimeout	Sublime Security	2y ago Aug 21st, 2023	Credential Phishing Malware/Ransomware Evasion HTML smuggling Scripting Archive analysis Content analysis File analysis HTML analysis Javascript analysis	/feeds/core/detection-rules/attachment-html-smuggling-with-settimeout-4e0b2c32