Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET SHELLCODE Possible %u4141%u4141 UTF-16 Heap Spray Attempt"; flow:established,to_client; content:"%u4141%u4141"; nocase; fast_pattern; classtype:shellcode-detect; sid:2013147; rev:3; metadata:created_at 2011_06_30, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_10_08;)