""ET TROJAN DOUBLEBACK CnC Activity""
SID: 2036823
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_06_03, deployment Perimeter, signature_severity Major, updated_at 2023_01_20
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
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Value: "POST"
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Value: "/admin" Depth: 6
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Value: "/client.php"
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Value: "Content-Type|3a 20|multipart/form-data|0d 0a|"
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Value: !"Referer|3a 20|"
Within: 13
PCRE: "/^\/admin(?:[0-9]{1,2})?\/client.php$/U"
Special Options:
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http_method
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http_uri
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http_uri
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fast_pattern
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http_header
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http_header