Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Suspicious IAT ZwSetSystemInformation - Undocumented API Which Can be Used for Rootkit Functionality"; flowbits:isset,ET.http.binary; flow:established,to_client; content:"ZwSetSystemInformation"; nocase; fast_pattern:only; reference:url,sans.org/reading_room/whitepapers/malicious/rss/_33649; classtype:misc-activity; sid:2012769; rev:3; metadata:created_at 2011_05_03, signature_severity Unknown, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_23;)