alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon Related VBS Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/help_"; fast_pattern; pcre:"/^[0-3]{2}_[0-2]{2}\.php$/R"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; content:"|0d 0a|accept-language|0d 0a|accept-encoding|0d 0a|"; reference:md5,2e70b2b0cf4e2d3ac2ed6d1ea967f18e; reference:url,www.trendmicro.com/en_us/research/20/d/gamaredon-apt-group-use-covid-19-lure-in-campaigns.html; classtype:trojan-activity; sid:2035039; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_02_02, deployment Perimeter, malware_family Gamaredon, performance_impact Moderate, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_25;)