Rule History

SID: 2021037 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 5 • Apr 30, 2015, 12:00 PM

Message:

ET EXPLOIT_KIT CottonCastle/Niteris EK Payload April 29 2015

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT CottonCastle/Niteris EK Payload April 29 2015"; flow:established,to_server; http.uri; content:"/5/"; fast_pattern; pcre:"/^\/[a-z]+\/[a-z]+\/5\/[A-Z]+\/[a-f0-9]{32}(?:[a-f0-9]{8})?$/"; http.referer; pcre:"/^[^\r\n]+\/\d\/[A-Z]+\/[a-f0-9]{32}(?:[a-f0-9]{8})?/"; classtype:exploit-kit; sid:2021037; rev:5; metadata:created_at 2015_04_30, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_03;)

Created:

Apr 30, 2015, 12:00 PM

Updated:

Mar 3, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 13, 2025, 9:34 PM

Filename:

rules/emerging-exploit_kit.rules