alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Backdoor.Win32.Aldibot.A Checkin"; flow:to_server,established; http.uri; content:"/gate.php?hwid="; nocase; content:"&pc="; nocase; content:"&localip="; nocase; content:"&winver="; nocase; reference:url,www.asert.arbornetworks.com/2011/10/ddos-aldi-bot/; reference:url,www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Trojan%3aWin32%2fAbot.gen!A; classtype:command-and-control; sid:2013748; rev:5; metadata:created_at 2011_09_24, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_20;)