alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET INFO Executable Requested from Evernote Link M1 (GET)";
flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"5leG";
http.host;
content:"t.mail-svc.evernote.com"; bsize:23; fast_pattern;
http.header_names;
content:!"Referer";
classtype:bad-unknown;
sid:2046748; rev:1;
metadata:attack_target Client_Endpoint, created_at 2023_07_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_07;
target:src_ip;
)