Rule History

alert udp $HOME_NET [!1720,!1722,!2427,!5060,1024:] -> $EXTERNAL_NET [!1720,!1722,!2427,!5060,1024:] (msg:"ET MALWARE Possible Downadup/Conficker-C P2P encrypted traffic UDP Ping Packet (bit value 16)"; dsize:>19; byte_test:1, &, 16, 19; threshold: type both, track by_src, count 95, seconds 40; reference:url,mtc.sri.com/Conficker/addendumC/; classtype:trojan-activity; sid:2009208; rev:4; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, updated_at 2019_07_26;)