alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Unknown EK Using Office/.Net ROP/ASLR Bypass"; flow:established,to_client; file_data; content:"(|22|ms-help|3a|//|22|)|3b|"; nocase; content:"(|22|ms-help|3a|//|22|)|3b|"; distance:0; content:"(|22|ms-help|3a 22|)|3b|"; nocase; content:"(|22|ms-help|3a 22|)|3b|"; nocase; distance:0; classtype:exploit-kit; sid:2017488; rev:3; metadata:created_at 2013_09_19, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)