alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/TA402 CnC Activity (POST)"; flow:established,to_server; urilen:<18; http.method; content:"POST"; http.uri; content:"/wp/v2/"; startswith; pcre:"/^(?:posts|categories|pages)$/R"; http.user_agent; bsize:<100; content:"Mozilla|2f|5|2e|0|20 28|Windows|20|NT|20|10|2e|0|3b 20|Win64|3b 20|x64|3b 20|rv|3a|"; startswith; pcre:"/^\d{2,3}\x2e\d{1,3}\x2e\d{4}\x2e\d{2,3}/R"; content:"|29 20|Gecko|2f|"; within:10; content:"Firefox|2f|3|2e|15"; endswith; fast_pattern; classtype:trojan-activity; sid:2049164; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_31, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_TA402, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_13, reviewed_at 2024_01_26, former_sid 2854972;)