alert tcp $EXTERNAL_NET any -> $HOME_NET 44818 (msg:"ET EXPLOIT Possible MicroLogix 1100 PCCC DoS Condition (CVE-2017-7924)"; flow:to_server,established; content:"|4b 02 20 67 24 01|"; content:"|a2|"; distance:0; content:"|05 47|"; distance:1; within:2; reference:cve,2017-7924; reference:url,rapid7.com/db/modules/auxiliary/dos/scada/allen_bradley_pccc; classtype:attempted-dos; sid:2026917; rev:1; metadata:created_at 2019_02_18, cve CVE_2017_7924, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Major, updated_at 2019_07_26, reviewed_at 2024_05_06;)