alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING WebDAV Retrieving .exe"; flow:established,to_server; http.method; content:"PROPFIND"; http.uri; content:".exe"; endswith; http.user_agent; content:"Microsoft-WebDAV-MiniRedir/"; startswith; fast_pattern; http.header_names; content:!"Referer"; classtype:bad-unknown; sid:2047742; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_08_25, deployment Perimeter, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_25, reviewed_at 2023_08_25; target:src_ip;)