alert tcp $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET DELETED Potential TDSS HTTP Library GET"; flow:established,to_server; content:"=="; http_uri; content:"GET"; http_method; content:"|20|HTTP/1.1|0d 0a|Accept-Language|3a 20|"; fast_pattern; content:"|0d 0a|User-Agent|3a 20|Mozilla/4.0|20|(compatible|3b 20|MSIE|20|"; distance:0; content:"|0d 0a|Host|3a 20|"; distance:0; content:"|0d 0a|Cache-Control|3a 20|no-cache"; distance:0; content:!"|0d 0a|Accept|3a 20|"; content:!"Referer|3a 20|"; classtype:trojan-activity; sid:2011890; rev:7; metadata:created_at 2010_11_03, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)