alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Bitter APT Activity (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"id|3d 25|computername|25 3b|timeout"; endswith; fast_pattern; reference:md5,cce89f4956a5c8b1bec82b21e371645b; classtype:trojan-activity; sid:2044781; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_03_27, deployment Perimeter, malware_family Bitter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_27;)