""ET TROJAN Win32/Ispen BADNEWS CnC Beacon""
SID: 2030357
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2016_06_03, deployment Perimeter, signature_severity Major, tag c2, updated_at 2016_11_21, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: ".php"
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Value: !"Referer|3a|"
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Value: "Accept|3a 20|application/x-www-form-urlencoded|0d 0a|"
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Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|"
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Value: "Windows NT"
Within:
PCRE: "/.php$/U"
Special Options:
-
http_uri
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http_header
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http_header
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fast_pattern
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http_header
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http_header