alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE NOBELIUM Win32/VaporRage Loader CnC Checkin"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/class-chll.php?session_info=60"; content:"5d"; distance:0; content:"&session="; distance:0; content:"&view_type=12"; endswith; http.user_agent; content:"Mozilla/5.0 (Windows NT 10.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4183.83 Safari/537.36"; bsize:102; fast_pattern; http.header_names; content:!"Referer"; content:!"Accept"; content:!"Cache-"; reference:url,www.microsoft.com/security/blog/2021/05/28/breaking-down-nobeliums-latest-early-stage-toolset; classtype:trojan-activity; sid:2033057; rev:2; metadata:created_at 2021_06_01, malware_family Win32_VaporRage, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_24, reviewed_at 2024_03_06;)