Rule History

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Spy.Agent.OHT - AnunakAPT TCP Keep-Alive"; flow:established,to_server; dsize:24; content:"|09 00 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 00 00|"; depth:20; threshold:type both, track by_src, count 1, seconds 120; reference:url,fox-it.com/en/files/2014/12/Anunak_APT-against-financial-institutions2.pdf; classtype:targeted-activity; sid:2020026; rev:2; metadata:created_at 2014_12_23, malware_family Win32_Spy_Agent_OHT, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)