alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Suspected SmokeLoader Retrieving Next Stage (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/smoke/loader/uploads/"; startswith; fast_pattern; http.header_names; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22; reference:md5,bfbf171b4ebc5286c78d718e445c65fb; classtype:trojan-activity; sid:2035623; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_03_28, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_28;)