alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Maldoc Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/portals/office/log.php?Data="; startswith; fast_pattern; http.header_names; content:!"Referer"; http.user_agent; content:"Microsoft Internet Explorer"; bsize:27; reference:url,twitter.com/ShadowChasing1/status/1485514043679199233; reference:md5,9521e4138fd0e6996072778cd4f1f06a; reference:md5,2ee3ae478e7d1f2f473b191b1be5e14f; classtype:trojan-activity; sid:2034969; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_01_25, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_25;)