alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET MALWARE W32/GMUnpacker.Downloader Download Instructions Response From CnC";
flow:established,to_client;
file_data;
content:"<AD>"; within:4;
content:"<TIPAD>"; distance:0;
content:"<POPUP>"; distance:0;
content:"<REG>HKEY_LOCAL_MACHINE|5c|SOFTWARE|5c|Microsoft|5c|Windows|5c|CurrentVersion|5c|"; distance:0;
reference:md5,43e89125ad40b18d22e01f997da8929a;
classtype:command-and-control;
sid:2017891; rev:2;
metadata:created_at 2013_12_20, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)