alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET EXPLOIT_KIT GrandSoft EK IE Exploit Jan 30 2018";
flow:established,from_server;
file_data;
content:"|3d 20 22 2c|&h|22|"; nocase; fast_pattern;
content:"4d"; nocase;
content:"5a"; nocase; within:20;
content:"responseBody"; nocase;
content:"Dim "; nocase;
content:"Dim "; nocase; distance:0;
content:"Win32_OperatingSystem"; nocase;
classtype:exploit-kit;
sid:2025272; rev:3;
metadata:created_at 2018_01_30, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;
)