alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA453/CharmingKitten HYPERSCRAPE Tool Identity Check Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/Index.php?vubc="; fast_pattern; startswith; http.header_names; content:"|0d 0a|Host|0d 0a|Accept-Encoding|0d 0a 0d 0a|"; bsize:29; reference:url,blog.google/threat-analysis-group/new-iranian-apt-data-extraction-tool/; classtype:trojan-activity; sid:2038595; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_08_23, deployment Perimeter, malware_family TA453, malware_family APT35, malware_family CharmingKitten, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_23;)