ET MALWARE IRC Potential bot update/download via ftp command

Query · suricata

flowbits:isset,is_proto_irc;
flow:established,to_client;
content:"ftp|3a|//"; fast_pattern;
pcre:"/\.(upda|getfile|dl\dx|dl|download|execute)\w*\s+ftp\x3a\x2f\x2f/i";

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE IRC Potential bot update/download via ftp command · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE IRC Potential bot update/download via ftp command";
    flowbits:isset,is_proto_irc;
    flow:established,to_client;
    content:"ftp|3a|//"; fast_pattern;
    pcre:"/\.(upda|getfile|dl\dx|dl|download|execute)\w*\s+ftp\x3a\x2f\x2f/i";
    classtype:trojan-activity;
    sid:2011162; rev:6;
    metadata:created_at 2010_07_30, signature_severity Major, updated_at 2019_10_08;
)

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