alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MSIL/Heracles Variant CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.user_agent; content:"cwyuno1c7n82bc201et81t627c8e6912r"; http.header_names; content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a 0d 0a|"; bsize:22; threshold:type limit, track by_src, count 1, seconds 120; reference:md5,e0c6208936aa0cccd6867214145433b3; reference:url,tria.ge/210728-48w5bjla3x; classtype:command-and-control; sid:2033592; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_07_28, deployment Perimeter, deployment SSLDecrypt, malware_family MSIL_Heracles, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_28;)