Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE W32/NSISDL.Downloader CnC Server Response"; flow:established,to_client; file_data; content:"[install 1]"; within:11; content:"Ins="; within:40; classtype:command-and-control; sid:2016746; rev:2; metadata:created_at 2013_04_09, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)