Rule History

SID: 2052503 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • May 7, 2024, 12:00 PM

Message:

ET EXPLOIT_KIT ClearFake Domain in TLS SNI (valentinedaycard .com)

Rule:

alert tls $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT ClearFake Domain in TLS SNI (valentinedaycard .com)"; flow:established,to_server; tls.sni; bsize:20; content:"valentinedaycard.com"; fast_pattern; reference:url,rmceoin.github.io/malware-analysis/clearfake/; reference:url,infosec.exchange/@monitorsg/112275613836597432; classtype:exploit-kit; sid:2052503; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2024_05_07, deployment Perimeter, deprecation_reason Relevance, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag ClearFake, tag compromised_website, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_09, reviewed_at 2024_07_09;)

Created:

May 7, 2024, 12:00 PM

Updated:

Jul 9, 2024, 12:00 PM

DB Created:

May 7, 2024, 9:00 PM

DB Updated:

Aug 11, 2025, 10:35 PM

Filename:

rules/emerging-exploit_kit.rules