alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Suspicious lsass.exe in URI"; flow:established,to_server; urilen:<100; http.method; content:"GET"; http.uri; content:"/lsass.exe"; nocase; endswith; fast_pattern; reference:md5,d929747212309559cb702dd062fb3e5d; classtype:bad-unknown; sid:2016699; rev:16; metadata:created_at 2013_04_02, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17;)