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Rev: 7 • Apr 6, 2011, 12:00 PMET MALWARE GET to Google with specific HTTP lib likely Cycbot/Bifrose/Kryptic checking Internet connection
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE GET to Google with specific HTTP lib likely Cycbot/Bifrose/Kryptic checking Internet connection"; flow:established,to_server; urilen:1; http.method; content:"GET"; http.host; content:"www.google.com"; http.connection; content:"close"; nocase; http.header_names; content:"|0d 0a|Connection|0d 0a|Host|0d 0a|Pragma|0d 0a 0d 0a|"; endswith; fast_pattern; classtype:command-and-control; sid:2012645; rev:7; metadata:created_at 2011_04_06, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_09_15;)
Apr 6, 2011, 12:00 PM
Sep 15, 2020, 12:00 PM
Apr 6, 2011, 12:00 PM
Oct 23, 2025, 9:34 PM
rules/emerging-malware.rules