Rule History

alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE njrat ver 0.7d Malware CnC Callback Response (File Manager)"; flow:to_client,established; content:"|00|rn|7c 27 7c 27 7c|"; nocase; fast_pattern; pcre:"/^\d{1,6}\x00rn\x7c/i"; classtype:command-and-control; sid:2022062; rev:1; metadata:created_at 2015_11_11, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)