alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Gamaredon APT Related Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/get.php"; bsize:8; fast_pattern; http.host; pcre:"/^[0-9]{6,10}\./"; http.header_names; content:!"Referer"; http.user_agent; content:!"Linux"; content:!"Android"; reference:md5,2dd5a4237122e73027404a91276f0235; reference:md5,9c8f6b38035c72421e1c71d2bb21ced9; reference:md5,860137d224440fd7c1cb3652199dcd58; classtype:trojan-activity; sid:2035288; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_02_25, deployment Perimeter, malware_family Gamaredon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_25;)