""ET TROJAN OSX/GMERA.B CnC Checkin""
SID: 2028620
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2019_09_24, deployment Perimeter, signature_severity Major, updated_at 2019_09_24
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: "GET"
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Value: "/link.php?" Depth: 10
-
Value: "&"
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Value: !"Referer|3a|"
Within:
PCRE: "/^\/link.php\?[^\r\n]+&[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$/U"
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_header