""ET TROJAN Backdoor.Elise CnC Beacon 3 M1""
SID: 2021277
Revision: 3
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2015_06_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_06_23, 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: $HTTP_PORTS
Flow: to_server,established
Contents:
-
Value: "GET"
-
Value: "/archive/"
Offset: 9
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Value: ".html"
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Value: !"Accept-"
-
Value: !"Referer|3a|"
Within: 7
PCRE: "/\/[a-f0-9]{8}\/archive\/\d{8,10}.html$/Ui"
Special Options:
-
http_method
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nocase
-
http_uri
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fast_pattern
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nocase
-
http_uri
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http_header
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http_header