Versions (3)
Version DetailsCurrent
Rev: 12 • Apr 9, 2011, 12:00 PMET MALWARE Cybergate/Rebhip/Spyrat Backdoor Keepalive
alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Cybergate/Rebhip/Spyrat Backdoor Keepalive"; flow:from_server,established; dsize:<100; content:"ping|7c|"; depth:5; content:!"|7c|"; within:1; classtype:trojan-activity; sid:2017990; rev:12; metadata:created_at 2011_04_09, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)
Apr 9, 2011, 12:00 PM
Jul 26, 2019, 12:00 PM
Apr 9, 2011, 12:00 PM
Dec 11, 2025, 10:34 PM
rules/emerging-malware.rules