alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Powershell Loader Related Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/getLicenseInfo.php?requirements=time&checkMethod="; startswith; fast_pattern; http.user_agent; content:"powershell/"; nocase; http.header_names; content:!"Referer|0d 0a|"; reference:md5,b1fd11164cec63f26a8b08ca2ab81b84; reference:url,www.trendmicro.com/en_us/research/23/k/attack-signals-possible-return-of-genesis-market.html; classtype:trojan-activity; sid:2051981; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_04_10, deployment Perimeter, malware_family Win32_Powershell, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_10; target:src_ip;)