Rule History

alert tcp $EXTERNAL_NET [443,$HTTP_PORTS] -> $HOME_NET any (msg:"ET MALWARE TorExplorer Certificate - Potentially Linked To W32/Cryptowall.Ransomware"; flow:established,to_client; content:"|55 04 03|"; content:"torexplorer.com"; distance:0; reference:url,www.malware-traffic-analysis.net/2014/05/28/index.html; classtype:trojan-activity; sid:2018539; rev:1; metadata:attack_target Client_Endpoint, created_at 2014_06_06, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2019_07_26, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)