""ET TROJAN CozyDuke APT HTTP CnC Beacon Response""
SID: 2020965
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2015_04_22, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_04_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel
Reference:
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md5
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98a6484533fa12a9ba6b1bd9df1899dc
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
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Value: "<--"
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Value: "-->|0a|<"
Within: 5
PCRE: "/^[A-F0-9]{8,12}/R"
Special Options:
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file_data
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fast_pattern