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Rev: 3 • Nov 30, 2015, 12:00 PMET EXPLOIT_KIT Possible Nuclear EK Landing Nov 27 2015
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET EXPLOIT_KIT Possible Nuclear EK Landing Nov 27 2015"; flow:to_server,established; urilen:>55; content:"&cat_no="; http_uri; content:"&no="; http_uri; distance:0; pcre:"/&cat_no=\d{2,5}?&no=\d{2,5}&[^&\x3d]+(?<!_no)=(?=[a-zA-Z0-9]+(?:[A-Z][a-z][A-Z]|\d[a-z][A-Z]|[A-Z]\d[A-Z]|[A-Z\d]{3}[a-z]))(?=[A-Fa-f0-9]*?[G-Zg-z])(?=[a-z0-9]*?[A-Z])(?=[A-Z0-9]*?[a-z])[A-Za-z0-9]{32}\x2e{0,2}$/U"; content:!"|0d 0a|Cookie|3a|"; flowbits:set,NuclearEK; classtype:exploit-kit; sid:2022193; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_11_30, deployment Perimeter, malware_family Nuclear, confidence Medium, signature_severity Critical, tag Exploit_Kit, tag Nuclear, updated_at 2019_07_26;)
Nov 30, 2015, 12:00 PM
Jul 26, 2019, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-exploit_kit.rules