alert tcp $HOME_NET any -> $EXTERNAL_NET 443 (msg:"ET MALWARE SWORD Sending Sword Marker"; flow:established,to_server; content:"|20 20 20 20 2f 2a 0a 40 2a 2a 2a 40 2a 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40 40|"; fast_pattern; reference:md5,052f5da1734464a985dcd669bff62f93; reference:url,www.mandiant.com/apt1; classtype:trojan-activity; sid:2016445; rev:3; metadata:created_at 2013_02_20, confidence High, signature_severity Major, updated_at 2022_03_22;)