""ET TROJAN OSX/Shlayer CnC Activity M4""
SID: 2026913
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2019_02_14, deployment Perimeter, malware_family Shlayer, performance_impact Low, signature_severity Major, updated_at 2019_02_14
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: "GET"
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Value: "/sd/?c=" Depth: 7
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Value: "&u="
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Value: "&s="
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Value: "&o="
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Value: "&b="
Within:
PCRE: "/^\/sd\/\?c=(?:[A-Z0-9+\/]{4})*(?:[A-Z0-9+\/]{2}==|[A-Z0-9+\/]{3}=|[A-Z0-9+\/]{4})[^&]+&u=[^&]+&s=[^&]+&o=[^&]+&b=\d{3,15}$/Ui"
Special Options:
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http_method
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http_uri
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fast_pattern
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http_uri
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http_uri
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http_uri
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http_uri