ET MALWARE njrat ver 0.7d Malware CnC Callback (File Manager Actions)

Query · suricata

flow:from_client,established;
content:"|00|fm|7C 27 7C 27 7C|"; nocase; fast_pattern;
pcre:"/^\d{1,6}\x00fm\x7c/i";
Raw source ET MALWARE njrat ver 0.7d Malware CnC Callback (File Manager Actions) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE njrat ver 0.7d Malware CnC Callback (File Manager Actions)";
    flow:from_client,established;
    content:"|00|fm|7C 27 7C 27 7C|"; nocase; fast_pattern;
    pcre:"/^\d{1,6}\x00fm\x7c/i";
    reference:md5,bbc68c34bb2dac3ae382ecf785bdb441;
    classtype:command-and-control;
    sid:2019221; rev:3;
    metadata:created_at 2014_09_23, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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