alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Pushbot server response"; flow:established,to_client; file.data; content:"ZG|25 20 21|GX"; startswith; reference:url,www.cert.pl/news/5587/langswitch_lang/en; classtype:trojan-activity; sid:2015003; rev:6; metadata:created_at 2012_07_03, signature_severity Major, updated_at 2024_04_08;)