Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT SUSPICIOUS JAR Download by Java UA with non JAR EXT matches various EKs"; flow:established,from_server; flowbits:isset,ET.JavaNotJar; flowbits:unset,ET.JavaNotJar; http.header; content:!".jar"; nocase; file.data; content:"PK"; within:2; content:".class"; distance:0; fast_pattern; classtype:exploit-kit; sid:2016540; rev:4; metadata:created_at 2013_03_06, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_23;)