alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE CN Based APT Related Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/News/"; startswith; fast_pattern; content:".html"; endswith; http.header_names; content:!"Referer"; http.request_body; content:"|21|"; endswith; http.user_agent; content:!"Linux"; reference:md5,00079dbf1d25e1d592709e5f895ff5b7; reference:url,twitter.com/nao_sec/status/1539246761067573249; reference:url,www.sentinelone.com/labs/targets-of-interest-russian-organizations-increasingly-under-attack-by-chinese-apts/; classtype:trojan-activity; sid:2037076; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_06_22, deployment Perimeter, malware_family TontoTeam, malware_family TA459, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_22, reviewed_at 2023_10_11;)