alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Underminer EK Plugin Check"; flow:established,to_client; content:"Cache-Control|3a 20|private|3b 20|no-store|3b 20|no-cache|0d 0a|"; http_header; content:"Content-Encoding|3a 20|gzip|0d 0a|"; http_header; file_data; content:"name:location.hostname,init:function()"; nocase; within:300; content:"document.body.appendChild(UserData.userData)"; nocase; distance:0; content:"D27CDB6E-AE6D-11cf-96B8-444553540000"; nocase; content:".setAttribute(|22|type|22|,|22|application/x-shockwave-flash|22|)"; nocase; distance:0; content:".test(navigator.userAgent)?function"; nocase; distance:0; content:"map([|22|ShockwaveFlash.ShockwaveFlash|22|,|22|AcroPDF.PDF|22|,|22|PDF.PdfCtrl|22|,|22|QuickTime.QuickTime|22|,|22|RealPlayer|22|,|22|SWCtl.SWCtl|22|,|22|WMPlayer.OCX|22|,|22|AgControl.AgControl|22|,|22|Skype.Detection|22|]"; nocase; fast_pattern; classtype:exploit-kit; sid:2025915; rev:3; metadata:affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2018_07_26, deployment Perimeter, signature_severity Major, tag Underminer_EK, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)