alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TontoTeam APT Related Bisonal CnC Activity"; flow:established,to_server; content:"\\r\\nConnection|3a 20|keep-alive\\r\\nAccept"; fast_pattern; http.method; content:"GET"; http.uri; content:"/index.php?strPageID="; http.header_names; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22; content:!"User-Agent"; content:!"Accept"; content:!"Referer"; reference:md5,80987dcdb36e7cb52bb03f00261aa2bd; reference:url,www.sentinelone.com/labs/targets-of-interest-russian-organizations-increasingly-under-attack-by-chinese-apts/; classtype:trojan-activity; sid:2037722; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_07_02, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_08;)