Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32/Spy.Agent.OHT - AnunakAPT HTTP Checkin Response 1"; flow:established,from_server; flowbits:isset,ET.Anunanak.HTTP.1; http.header; content:"Content-Length|3a 20|11|0d 0a|"; file.data; content:"no commands"; fast_pattern; reference:url,fox-it.com/en/files/2014/12/Anunak_APT-against-financial-institutions2.pdf; classtype:targeted-activity; sid:2020028; rev:4; metadata:created_at 2014_12_23, malware_family Win32_Spy_Agent_OHT, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_29;)