Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Compromised Chat Application Related User-Agent (Chrorne)"; flow:established,to_server; http.user_agent; content:"Chrorne"; bsize:7; fast_pattern; reference:url,www.trendmicro.com/en_us/research/22/l/probing-weaponized-chat-applications-abused-in-supply-chain-atta.html; classtype:trojan-activity; sid:2043100; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_12_29, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_29;)