alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Sofacy HTTP Request adobeincorp.com"; flow:established,to_server; http.header; content:"Host|3a 20|adobeincorp.com|0d 0a|"; reference:url,fireeye.com/resources/pdfs/apt28.pdf; classtype:targeted-activity; sid:2019547; rev:2; metadata:created_at 2014_10_29, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_05_13;)