""ET TROJAN Win64/Agent.NL Variant CnC Activity""

SID: 2034580

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 2021_12_03, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_12_03

Reference:

  • md5

  • d37bb6fc88cd71f86a3d4211a064d80b

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/getconfig.php?r="

  • Value: "|7b 22|data|22 3a 22|" Depth: 9

  • Value: !"|3a|"

  • Value: "Content-Type|3a 20|application/json|0d 0a|"

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE: "/\/getconfig.php\?r=[0-9]+$/U"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

  • http_header

  • http_header

source