alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Winwebsec User-Agent Detected"; flow:established,to_server; http.user_agent; content:"InstallNotify/1.0"; startswith; reference:url,www.f-secure.com/sw-desc/rogue_w32_winwebsec.shtml; reference:url,blogs.technet.com/mmpc/archive/2009/05/13/msrt-tackles-another-rogue.aspx; classtype:trojan-activity; sid:2009896; rev:4; metadata:created_at 2010_07_30, malware_family Win32_Winwebsec, confidence High, signature_severity Major, updated_at 2024_02_05;)