alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32.Duqu UA and Filename Requested"; flow:established,to_server; http.user_agent; content:"Mozilla/5.0 (Windows|3b| U|3b| Windows NT 6.0|3b| en-US|3b| rv|3a|1.9.2.9) Gecko/20100824 Firefox/3.6.9 (.NET CLR 3.5.30729)"; startswith; http.header; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|DSC00001.jpg|22|"; fast_pattern; reference:url,www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/w32_duqu_the_precursor_to_the_next_stuxnet.pdf; classtype:policy-violation; sid:2013783; rev:7; metadata:created_at 2011_10_20, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_05;)