alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE RedGuard Framework Related Request Activity"; flow:established,to_server; http.user_agent; bsize:114; content:"Mozilla/5.0 (Windows NT 10.0|3b 20|Win64|3b 20|x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36"; http.header_names; to_lowercase; content:"|0d 0a|user-agent|0d 0a|accept|0d 0a|redguard|0d 0a|charset|0d 0a|"; fast_pattern; reference:url,github.com/wikiZ/RedGuard; classtype:trojan-activity; sid:2037927; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_08_04, deployment Perimeter, deployment SSLDecrypt, malware_family RedGuard, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_30;)