Versions (3)
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Rev: 9 • Jul 30, 2010, 12:00 PMET HUNTING Suspicious User-Agent Beginning with digits - Likely spyware/trojan
alert http $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET HUNTING Suspicious User-Agent Beginning with digits - Likely spyware/trojan"; flow:established,to_server; http.header_names; content:"|0d 0a|User-Agent|0d 0a|"; fast_pattern; http.user_agent; content:!"Mozilla/"; pcre:"/^\d+/"; http.host; content:!"liveupdate.symantecliveupdate.com"; classtype:trojan-activity; sid:2010697; rev:9; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, deprecation_reason Performance, performance_impact Significant, confidence Medium, signature_severity Major, tag User_Agent, updated_at 2024_02_27;)
Jul 30, 2010, 12:00 PM
Feb 27, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-hunting.rules