alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/PlugX Related Activity"; flow:established,to_server; dsize:6; content:"feiji."; fast_pattern; reference:url,twitter.com/0xrb/status/1503983616321552384; reference:md5,ff82ecc7bee903f3eb2e168855598d37; reference:md5,ae0bd618eedec0b1ba9f149333d08837; classtype:trojan-activity; sid:2035473; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_03_16, deployment Perimeter, malware_family PlugX, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_02;)