Rule History

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE njrat ver 0.7d Malware CnC Callback (Message)"; flow:from_client,established; content:"|00|MSG|7c 27 7c 27 7c|"; nocase; fast_pattern; pcre:"/^\d{1,6}\x00msg\x7c/i"; reference:md5,bbc68c34bb2dac3ae382ecf785bdb441; classtype:command-and-control; sid:2019216; rev:4; metadata:created_at 2014_09_23, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_19;)