ET SCAN Multiple FTP Administrator Login Attempts from Single Source - Possible Brute Force Attempt
Sourceet/open
CreatedJuly 30, 2010
UpdatedJuly 26, 2019
Classificationattempted-recon
alert tcp $EXTERNAL_NET any -> $HOME_NET 21 (msg:"ET SCAN Multiple FTP Administrator Login Attempts from Single Source - Possible Brute Force Attempt"; flow:established,to_server; content:"USER "; nocase; depth:5; content:"administrator"; within:25; nocase; threshold:type threshold, track by_src, count 5, seconds 60; classtype:attempted-recon; sid:2010643; rev:3; metadata:created_at 2010_07_30, confidence Medium, signature_severity Informational, updated_at 2019_07_26;)
Metadata
created at2010_07_30
confidenceMedium
signature severityInformational
updated at2019_07_26
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