""ET TROJAN Win32/Koi Loader CnC Checkin M2""
SID: 2049814
Revision: 1
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, created_at 2023_12_21, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_01_02
Reference:
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md5
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09350493580399e2983148e80fd4490b
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: "/config.php"
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Value: "Content-Encoding|3a 20|binary|0d 0a|"
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Value: "Content-Type|3a 20|application/octet-stream"
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Value: "Content-Length|3a 20|86|0d 0a|"
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Value: "111|7c|" Depth: 4
Within:
PCRE: "/^111\x7c[a-f0-9]{8}-([a-f0-9]{4}-){3}[a-f0-9]{12}\x7c/P"
Special Options:
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http_method
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http_uri
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http_header
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http_header
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http_header
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http_client_body
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fast_pattern