alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TABMSGSQL/Sluegot.C Checkin"; flow:established,to_server; http.uri; content:"?rands="; fast_pattern; http.user_agent; content:"Mozilla/4.0 (compatible|3b 20|)"; depth:26; endswith; reference:url,www.cyberesi.com/2011/06/15/trojan-letsgo-analysis/; reference:url,www.mandiant.com/apt1; reference:md5,052ec04866e4a67f31845d656531830d; classtype:command-and-control; sid:2016446; rev:6; metadata:created_at 2013_02_20, signature_severity Major, updated_at 2020_10_14;)