alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE XDMonitor Checkin Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/data/"; content:".xd"; isdataat:!2,relative; http.user_agent; bsize:17; content:"internet explorer"; fast_pattern; reference:url,vblocalhost.com/uploads/VB2020-Faou-Labelle.pdf; classtype:targeted-activity; sid:2030959; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_10_02, deployment Perimeter, malware_family XDSpy, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_02;)