alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (urlRequest)"; flow:established,to_server; http.user_agent; content:"urlRequest"; bsize:10; reference:md5,988fbcfeebf2a49af4072030dead68f9; classtype:bad-unknown; sid:2034298; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_10_29, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_29;)