alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (Mozilla/4.0 (compatible ICS))"; flow:established,to_server; http.user_agent; content:"Mozilla/4.0 (compatible|3b 20|ICS)"; depth:29; endswith; http.host; content:!".iobit.com"; content:!".microsoft.com"; content:!".cnn.com"; content:!".wunderground.com"; content:!".weatherbug.com"; content:!"iobit.com.s3.amazonaws.com"; classtype:pup-activity; sid:2008038; rev:15; metadata:created_at 2010_07_30, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_17;)