alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE DonotGroup Activity (GET)"; flow:established,to_server; urilen:20<>35; http.method; content:"GET"; http.uri; content:!".php"; http.user_agent; bsize:21; content:"Mozila 53.0 edge 73.1"; fast_pattern; reference:url,twitter.com/ShadowChasing1/status/1572533006237331456; reference:md5,992acca21f1f0d818fb7d599d69d93b7; classtype:trojan-activity; sid:2038913; rev:2; metadata:attack_target Client_Endpoint, created_at 2022_09_21, deployment Perimeter, malware_family DonotGroup, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_26;)